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Agilent Technologies 8169A User Manual

Agilent Technologies 8169A User Manual

Polarization controller
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Agilent 8169A
Polarization Controller
User's Guide
Agilent Technologies

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  • Page 1 ® Advanced Test Equipment Rentals www.atecorp.com 800-404-ATEC (2832) Agilent 8169A Polarization Controller User's Guide Agilent Technologies...
  • Page 2 Notices © Agilent Technologies, Inc. 2002-2004 with an instrument will execute its Agilent Technologies further certifies This document contains proprietary programming instructions when that its calibration measurements are information that is protected by properly installed on that instrument. traceable to the United States National copyright.
  • Page 3 Warnings and Notices WARN IN G To avoid the possibility of injury or death, you must observe the follow ing precautions before switching on the instrument. Insert the power cable plug only into a socket outlet provided with a protective earth contact. Do not negate this protective action by the using an extension cord without a protective conductor.
  • Page 4 Agilent Technologies Sales and Service Offices For more information about Agilent Technologies test and measurement products, applications, services, and for a current sales office listing, viesit our web site: http://www.agilent.com/comms/lightwave You can also contact one of the following centers and ask for a test and measurement sales representative.

  • Page 5: Table Of Contents

    Setting the Optimum Transmission SoP Scanning the Poincare Sphere Setting up the Hardware Setting Up and Executing a Scan Example: Measuring the Response to a "Depolarized" Signal Set the Polarizing Filter Setting Up the Instruments Running the Scan Agilent 8169A Polarization Controller, Second Edition...
  • Page 6 Some Notes about Programming and Syntax Diagram Conventions Short Form and Long Form Command and Query Syntax Remote Commands Command Summary The Common Commands Common Status Information SRQ, The Service Request Switching On and Off the Instrument Display Agilent 8169A Polarization Controller, Second Edition...
  • Page 7 Altitude Installation Category and Pollution Degree Instrument Positioning and Cooling Switching on the Polarization Controller Optical Output Trigger Input and Output GPIB Interface Connector GPIB Logic Levels Claims and Repackaging Return Shipments to Agilent Agilent 8169A Polarization Controller, Second Edition...
  • Page 8 Why is it important to clean optical devices? What materials do I need for proper cleaning? Preserving Connectors Cleaning Instrument Housings General Cleaning Procedure Additional Cleaning Information Other Cleaning Hints Error Messages Display Messages GPIB Messages Agilent 8169A Polarization Controller, Second Edition...
  • Page 9 Editing Using the Modify Keys and Knob ....17 Resetting Parameters ......18 Agilent 8169A Polarization Controller, Second Edition...

  • Page 10: Getting Started

    WARN IN G procedure which, if not correctly performed or adhered to, could result in injury or loss of life. Do not proceed beyond a warning sign until the indicated conditions are fully understood and met. Agilent 8169A Polarization Controller, Second Edition...
  • Page 11 The CSA mark is a registered trademark of the Canadian Standards Association. The C-Tick mark is a registered trademark of the Australian Spectrum Management Agency. This text denotes the instrument is an Industrial Scientific and ISM1-A Medical Group 1 Class A product. Agilent 8169A Polarization Controller, Second Edition...

  • Page 12: The Basic Operating Principle

    Getting Started The Basic Operating Principle The Basic Operating Principle The Agilent 8169A Polarization Controller transforms polarization relative to a built in linear polarizer. This means that the optical input is passed through a linear polarizer (Pol), to extract a single linear polarization.

  • Page 13: Using The Polarization Controller For Polarization Analysis

    You analyze the signal by varying the /4 and /2 plates and the polorizer filter, and examining how this affects the power. It is beyond the scope of this manual to explain this topic in detail. Agilent 8169A Polarization Controller, Second Edition...

  • Page 14: Editing

    Getting Started Editing Editing You can edit a parameter by using • the Entry keys, • the Cursor/Vernier keys, or • the Modify knob. Agilent 8169A Polarization Controller, Second Edition...

  • Page 15: Editing Using The Entry Keys

    If you want to abort editing, without changing the parameter, press If you cannot change a digit with the Vernier keys or the Modify knob, this means that the new value would be out of the range allowed for the parameter. Agilent 8169A Polarization Controller, Second Edition...

  • Page 16: Resetting Parameters

    To reset any parameter 1 Make sure the correct parameter is selected (the label of the selected parameter is displayed inverse). 2 Press λ λ ε , AND 2 θ To reset Pol, /2, 2 simultaneously, press Agilent 8169A Polarization Controller, Second Edition...
  • Page 17 Setting the Worst Case Transmission SoP... . 26 Setting the Optimum Transmission SoP ....28 Agilent 8169A Polarization Controller, Second Edition...

  • Page 18: Setting Up The Hardware

    Typically, you will connect the polarization controller directly after your source, and before your device under test (DUT). Before connecting to the rest of your measurement setup, you should set the position of the polarizing filter. Agilent 8169A Polarization Controller, Second Edition...

  • Page 19: Setting The Position Of The Polarizing Filter

    Select the hundredths digit, and adjust the angle of the polarization filter if necessary to get the absolute maximum. 5 Disconnect the power meter, and connect to your DUT, and the rest of your measurement setup, making sure to move the fibers as little as possible. Agilent 8169A Polarization Controller, Second Edition...

  • Page 20: Setting The State Of Polarization

    There are two ways of setting the state of polarization, λ λ • by specifying the position of the /4 and /2 retarder plates, or ε θ • by specifying p , the coordinates on the Poincare sphere. Agilent 8169A Polarization Controller, Second Edition...

  • Page 21: Using The Circle Mode

    2 p if the angle you want is not already selected. 2 Change the angle to the value you want. (See “Editing" in Chapter 1 if you need information on changing the angles). Agilent 8169A Polarization Controller, Second Edition...

  • Page 22: Example: Setting The Optimum Transmission Sop

    Under normal circumstances you should leave the instruments to warmup. N O TE (The multimeter needs around 20 minutes to warm up.) Warming up is necessary for accuracy of the sensor, and the output power of the source. Agilent 8169A Polarization Controller, Second Edition...

  • Page 23: Set The Polarizing Filter

    Press twice to select the hundredths digit. Using the Modify knob, increase the angle slowly until the power on the multimeter starts to decrease. Return to the angle that gave the maximum power. Agilent 8169A Polarization Controller, Second Edition...

  • Page 24: Setting The Worst Case Transmission Sop

    (that is finding the angle of longitude of the worst case) and then the overall worst case by moving around this line of longitude. Figure 8 Power contours with a search path to the worst case transmission state of polar- ization Agilent 8169A Polarization Controller, Second Edition...
  • Page 25 ε ε 3 Press , to select 4 Search for the angle of latitude with the minimum power. Agilent 8169A Polarization Controller, Second Edition...

  • Page 26: Setting The Optimum Transmission Sop

    For non-linear components the polarizations for worst case and optimum transmission will not be on opposite sides of the sphere, and the angle between them is a characteristic of the component. Agilent 8169A Polarization Controller, Second Edition...
  • Page 27 Running the Scan ........37 Analyzing the Results ......37 Agilent 8169A Polarization Controller, Second Edition...

  • Page 28: Setting Up The Hardware

    (DUT). Before connecting to the rest of your measurement setup, you should set the position of the polarizing filter (this is described in Set the Polarizing Filter in Chapter 2). Agilent 8169A Polarization Controller, Second Edition...

  • Page 29: Setting Up And Executing A Scan

    3 When everything is setup, press to start the scan. λ λ During the scan, values for the angle of /4 and /2 are shown on the display. λ These values are samples. The plates rotate continuously. Agilent 8169A Polarization Controller, Second Edition...

  • Page 30: Example: Measuring The Response To A "Depolarized

    4 Set the channel with the sensor module to the wavelength of the source, and select the default averaging speed (200 ms) [Press to select T, hold to reset T]. Agilent 8169A Polarization Controller, Second Edition...

  • Page 31: Set The Polarizing Filter

    Using the Modify knob, increase the angle slowly until the power on the mul- timeter starts to decrease. Return to the angle that gave the maximum pow- 4 Connect the DUT into the setup, disturbing the setup as little as possible. Figure 10 Setup with the DUT Agilent 8169A Polarization Controller, Second Edition...

  • Page 32: Setting Up The Instruments

    /4 and /2 on the display begin to change. 2 When the application is running, read the value for the response of the DUT to a depolarized signal from the display for the power sensor. Agilent 8169A Polarization Controller, Second Edition...

  • Page 33: Example: Measuring A Polarization Dependent Loss

    4 Set the channel with the sensor module to the wavelength of the source, and select the default averaging speed (200 ms) [Press to select T, hold to reset T]. Agilent 8169A Polarization Controller, Second Edition...

  • Page 34: Set The Polarizing Filter

    Using the Modify knob, increase the angle slowly until the power on the mul- timeter starts to decrease. Return to the angle that gave the maximum pow- 4 Connect the DUT into the setup, disturbing the setup as little as possible. Figure 12 Setup with the DUT Agilent 8169A Polarization Controller, Second Edition...

  • Page 35: Setting Up The Instruments

    1 When the recording is finished look at the results and find the difference between the highest and lowest [Press to get SHOW, press , and then twice to get DIFF]. This is the Polarization Dependent Loss for the DUT. Agilent 8169A Polarization Controller, Second Edition...
  • Page 36 Scanning the Poincare Sphere Analyzing the Results Agilent 8169A Polarization Controller, Second Edition...
  • Page 37 Recalling a Setting ....... . 40 Resetting the Instrument ......40 Agilent 8169A Polarization Controller, Second Edition...

  • Page 38: Setting The Gpib Address

    Fast. To reset the instrument, you can either 1 Find the actual setting you want to restore, using 2 Press 1 Find the default setting, using 2 Press Agilent 8169A Polarization Controller, Second Edition...
  • Page 39 Short Form and Long Form ......46 Command and Query Syntax ..... . . 47 Agilent 8169A Polarization Controller, Second Edition...

  • Page 40: Gpib Interface

    Agilent 8164A/B Lightwave Measurement System, and Agilent 8166A/B Lightwave Multichannel System to the GPIB is defined by the IEEE Standards 488.1 and 488.2. Table 1 shows the interface functional subset that the instruments implement. Agilent 8169A Polarization Controller, Second Edition...

  • Page 41: Setting The Gpib Address

    Returning the Instrument to Local Control If the instrument has been operated in remote the only key you can use is . The key returns the instrument to local control. does not operate if local lockout has been enabled. Agilent 8169A Polarization Controller, Second Edition...

  • Page 42: How The Polarization Controller Receives And Transmits

    4 The parser starts if the LF character is received or if the input queue is full. Clearing the Input Queue Switching the power off, or sending a Device Interface Clear signal, causes commands that are in the input queue, but have not been executed to be lost. Agilent 8169A Polarization Controller, Second Edition...

  • Page 43: The Output Queue

    • You can send several commands in a single message. Each command must be separated from the next one by a semicolon (;). • You end a program message with a line feed (LF) character, or any character sent with End-Or-Identify (EOI). Agilent 8169A Polarization Controller, Second Edition...

  • Page 44: Short Form And Long Form

    For example, the above command would be written :DISPlay:ENABle. The first colon can be left out for the first command or query in your message. That is, the example given above could also be sent as DISP:ENAB ON. Agilent 8169A Polarization Controller, Second Edition...

  • Page 45: Command And Query Syntax

    The bar (j) shows an either-or choice of data, for example, a/b means either a or b, but not both simultaneously. Extra spaces are ignored; they can be inserted to improve readability. Agilent 8169A Polarization Controller, Second Edition...
  • Page 46 Programming the Polarization Controller GPIB Interface Agilent 8169A Polarization Controller, Second Edition...
  • Page 47 *WAI ..........64 Agilent 8169A Polarization Controller, Second Edition...
  • Page 48 :STATus:QUEStionable:ENABle......79 :STATus:QUEStionable:ENABle?......79 Agilent 8169A Polarization Controller, Second Edition...
  • Page 49 Checking the Status....... 80 :STATus:OPERation:CONDition? :STATus:OPERation[:EVENt]? :STATus:QUEStionable:CONDition? :STATus:QUEStionable[:EVENt]? SYSTem Commands :SYSTem:ERRor? :SYSTem:VERSion? Agilent 8169A Polarization Controller, Second Edition...

  • Page 50: Command Summary

    *RST Reset Command *SAV <location> Save Instrument Setting *SRE <value> Service Request Enable Command *SRE? <value> Service Request Enable Query *STB <value> Read Status Byte Query *TST <value> Self Test Query *WAI Wait Command Agilent 8169A Polarization Controller, Second Edition...
  • Page 51 0 / 1 :STATus :OPERation :CONDition? <value> :ENABle <value> 65535 :ENABle? <value> [:ENVENt]? <value> :NTRansmission <value> 65535 :NTRansmission? <value> :PTRansmission <value> 65535 :PTRansmission? <value> :PRESet j No unit is specified, but all values are in degrees. Agilent 8169A Polarization Controller, Second Edition...

  • Page 52: The Common Commands

    The IEEE 488.2 standard has a list of reserved commands, called common commands. These are the commands that start with an asterisk. Some of these commands must be implemented by any instrument using the standard, others are optional. This section describes the implemented commands Agilent 8169A Polarization Controller, Second Edition...

  • Page 53: Common Status Information

    Status Register Figure 13 Common Status Registers *The questionable and operation status trees are described in \STATus Commands". Unused bits in any of the registers return 0 when you read them. N O TE Agilent 8169A Polarization Controller, Second Edition...

  • Page 54: Srq, The Service Request

    MAV, bit 4, in the status byte register are cleared, and if condition bits 2-0 of the status byte register are zero, MSS, bit 6 of the status byte register is also zero. Example OUTPUT 724;"*CLS" Agilent 8169A Polarization Controller, Second Edition...

  • Page 55: Ese

    Devicedependent Error Query Error Request Error Operation Complete *ESE? The standard event status enable query returns the contents of the standard event status enable register. Example OUTPUT 724;"*ESE 21" OUTPUT 724;"*ESE?" ENTER 724; A$ Agilent 8169A Polarization Controller, Second Edition...

  • Page 56: Esr

    Operation Complete Example OUTPUT 724;"*ESR?" ENTER 724; A$ *IDN? Syntax *IDN? Definition The identification query commands the instrument to identify itself over the interface. Response: Agilent Technologies, Agilent 8169A, mmmmmmmmmm, n.nn Agilent Technologies: manufacturer Agilent 8169A Polarization Controller, Second Edition...

  • Page 57: Opc

    Once it has completed it places an ASCII '1' in the output queue. There is a short delay between interpreting the command and putting the '1' in the queue. Example OUTPUT 724;"*CLS;*ESE 1;*SRE 32" OUTPUT 724;"*OPC?" ENTER 724;A$ Agilent 8169A Polarization Controller, Second Edition...

  • Page 58: Rcl

    • Instrument interface address • Output queue • Service request enable register (SRE) • Standard event status enable register (ESE) The commands and parameters of the reset state are listed in the following table. Agilent 8169A Polarization Controller, Second Edition...

  • Page 59: Sav

    The register is cleared: • At power-on • By sending a value of zero. The register is not changed by the *RST and *CLS commands. Agilent 8169A Polarization Controller, Second Edition...

  • Page 60: Sre

    Example OUTPUT 724;"*SRE 48" OUTPUT 724;"*SRE?" ENTER 724; A$ *STB? Syntax *STB? Definition The read status byte query returns the contents of the status byte register. 0 _ contents _ 255 Agilent 8169A Polarization Controller, Second Edition...

  • Page 61: Tst

    Definition The self-test query commands the instrument to perform a self-test and place the results of the test in the output queue. Returned value: 0 _<value _<65535. This value is the sum of the results for the individual tests Agilent 8169A Polarization Controller, Second Edition...

  • Page 62: Wai

    The instrument is returned to the setting that was active at the time the self-test query was processed. The self-test does not require operator interaction beyond sending the *TST? query. Example OUTPUT 724;"*TST?" ENTER 724; A$ *WAI Syntax *WAI Agilent 8169A Polarization Controller, Second Edition...
  • Page 63 SRQ, The Service Request Remote Commands Definition The wait-to-continue command prevents the instrument from executing any further commands, all pending operations are completed. Example OUTPUT 724;"*WAI" Agilent 8169A Polarization Controller, Second Edition...

  • Page 64: Switching On And Off The Instrument Display

    The query returns the current state of the display. A returned value of 0 shows that the display is off. A returned value of 1 shows that the display is on. Example OUTPUT 724;":DISP:ENAB ON" OUTPUT 724;":DISP:ENAB?" ENTER 724;A$ Agilent 8169A Polarization Controller, Second Edition...

  • Page 65: Positioning The Polarizing Filter

    • MAXimum (360.00°), or • DEFault (0.00°). [:INPut]:POSition:POLarizer? Syntax [:INPut]:POSition:POLarizer? Description This query gets the position of the polarizing filter in mechanical degrees (without a unit). Example OUTPUT 724;"POS:POL 127" OUTPUT 724;"POS:POL?" ENTER 724;A$ Agilent 8169A Polarization Controller, Second Edition...

  • Page 66: Setting The State Of Polarization

    N O TE The value you specify with this command is for 2 [:INPut]:CIRCle:EPSilonb? Syntax [:INPut]:CIRCle:EPSilonb? Description ε This query gets the 2 position on the Poincare sphere in optical degrees (without a unit). Agilent 8169A Polarization Controller, Second Edition...

  • Page 67: [:Input]:Circle:thetap

    Description θ This query gets the position of the 2 position on the Poincare sphere in optical degrees (without a unit). θ N O TE The value is for 2 returned by this query Agilent 8169A Polarization Controller, Second Edition...

  • Page 68: [:Input]:Position:half

    0.05°), • MINimum (-360.00°), • MAXimum (360.00°), or • DEFault (0.00°). [:INPut]:POSition:HALF? Syntax [:INPut]:POSition:HALF? Description λ This query gets the position of the /2 retarder plate in mechanical degrees (without a unit). Agilent 8169A Polarization Controller, Second Edition...

  • Page 69: [:Input]:Position:quarter

    [:INPut]:POSition:QUARter? Description λ This query gets the position of the /4 retarder plate in mechanical degrees (without a unit). Example OUTPUT 724;":POS:QUAR 64" OUTPUT 724;":POS:HALF 99.5" OUTPUT 724;":POS:QUAR?" ENTER 724;Q$ OUTPUT 724;":POS:HALF?" ENTER 724;H$ Agilent 8169A Polarization Controller, Second Edition...

  • Page 70: Scanning The Poincare Sphere

    This query gets the the speed at which the the state of polarization is set to change. • 0 if the speed is set to slow • 1 if the speed is set to fast, or :INITiate[:IMMediate] Syntax :INITiate[:IMMediate] Agilent 8169A Polarization Controller, Second Edition...

  • Page 71: Abort

    Remote Commands Description This command starts the application. ABORt Syntax :ABORt Description This command aborts an application that is running. Example OUTPUT 724;":PSPH:RATE 1" OUTPUT 724;":INIT" ... OUTPUT 724;":PSPH:RATE?" ENTER 724;R$ .. OUTPUT 724;":ABOR" Agilent 8169A Polarization Controller, Second Edition...

  • Page 72: Status Commands

    The power-on condition for this register is for all the bits to be disabled. • The enable register (ENABle), which enables changes in the event register to affect the Status Byte. The status registers for the polarization controller are organized as shown: Figure 14 The Status Registers Agilent 8169A Polarization Controller, Second Edition...

  • Page 73: Setting Up The Status Registers

    This command sets the bits in the NTRansition register. Setting a bit in this register enables a negative transition (1!0) in the corresponding bit in the CONDition register to set the bit in the EVENt register. Agilent 8169A Polarization Controller, Second Edition...

  • Page 74: Status:operation:ntransition

    (0/1) in the corresponding bit in the CONDition register to set the bit in the EVENt register. :STATus:OPERation:PTRansition?. Syntax :STATus:OPERation:PTRansition? Description This query returns the current contents of the OPERation:PTRansition register. :STATus:OPERation:ENABle Syntax :STATus:OPERation:ENABle <wsp> <value> Agilent 8169A Polarization Controller, Second Edition...

  • Page 75: Status:questionable:ntransition

    OUTPUT 724;”STAT:OPER:PTR?” ENTER;P$ OUTPUT 724;”STAT:OPER:ENAB?” ENTER 724;E$ Only one bit of the QUEStionable node is used: • Bit 8 shows that there is an error in the calibration data. :STATus:QUEStionable:NTRansition Syntax :STATus:QUEStionable:NTRansition <wsp> <value> Agilent 8169A Polarization Controller, Second Edition...

  • Page 76: Status:questionable:ntransition

    (0/1) in the corresponding bit in the CONDition register to set the bit in the EVENt register. :STATus:QUEStionable:PTRansition?. Syntax :STATu s:QUEStionable:PTRansition? :STATus:QUEStionable:ENABle?. Description This query returns the current contents of the QUEStionable:PTRansition register. Agilent 8169A Polarization Controller, Second Edition...

  • Page 77: Status:questionable:enable

    :STATus:QUEStionable:ENABle? Description This query returns the current contents of the QUEStionable:ENABle register Example OUTPUT 724;":STAT:QUES:NTR 256" OUTPUT 724;":STAT:QUES:PTR 256" OUTPUT 724;":STAT:QUES:ENAB 256" OUTPUT 724;":STAT:QUES:NTR?" ENTER 724;N$'' OUTPUT 724;":STAT:QUES:PTR?" ENTER 724;P$'' OUTPUT 724;":STAT:QUES:ENAB?" ENTER 724;E$ Agilent 8169A Polarization Controller, Second Edition...

  • Page 78: Checking The Status

    This query reads the contents of the OPERation:CONDition register. Only two bits of the condition register are used: Table 10 BITS MNEMONICS BIT VALUE Setting Application Example OUTPUT 724;":STAT:OPER:COND?" ENTER 724;A$ :STATus:OPERation[:EVENt]? Syntax :STATus:OPERation[:EVENt]? Agilent 8169A Polarization Controller, Second Edition...
  • Page 79 Syntax :STATus:QUEStionable:CONDition? Description This query reads the contents of the QUEStionable:CONDition register. Only one bit of the condition register is used: Table 12 BITS MNEMONICS BIT VALUE Calibration Data Example OUTPUT 724;":STAT:QUES:COND?" ENTER 724;A$ Agilent 8169A Polarization Controller, Second Edition...
  • Page 80 This query reads the contents of the QUEStionable:EVENt register. Only one bit of the event register is used (whether these bits contain information depends on the transition register configuration): Table 13 BITS MNEMONICS BIT VALUE Calibration Data Example OUTPUT 724;":STAT:QUES?" ENTER 724;A$ Agilent 8169A Polarization Controller, Second Edition...

  • Page 81: System Commands

    This query returns the version of the SCPI command set being used in the format yyyy.v, where yyyy is the year, and v is the version. For this instrument, the value returned is always 1994.0 Example OUTPUT 724;":SYST:VERS?" ENTER 724;A$ Agilent 8169A Polarization Controller, Second Edition...
  • Page 82 Remote Commands SYSTem Commands Agilent 8169A Polarization Controller, Second Edition...

  • Page 83: Programming Examples

    Example 2 - Status Registers and Queues ... . 87 Example 3 - Finding the Optimum Transmission SoP . . . 90 Example 4 - Finding the Polarization Dependence ..94 Agilent 8169A Polarization Controller, Second Edition...

  • Page 84: Example 1 - Checking Communication

    GPIB card in the controller; the 24 is it’s GPIB address DIM String$ [50] PRINT TABXY (5, 10); “Programming Example 1, Simple Communications” ! Send an IDN and get the Identification OUTPUT Pol; “*IDN?” ENTER Pol;:String$ PRINT TABXY (10, 12); “Identification : “;String$ Agilent 8169A Polarization Controller, Second Edition...

  • Page 85: Example 2 - Status Registers And Queues

    Service ReQuest (SRQ) occurs. The number of the most recent error, and the most recent contents of the output queue is also displayed. Listing Table 15 !-------------------------------------------------------- ! Agilent 8169A Programming Example 2 ! Status Structure and a useful self lesrning tool !-------------------------------------------------------- ! Declarations and initialization INTEGER Value,Bit,Quot,Xpos,Ypos...
  • Page 86 ! Initialize and start the display of the registers PRINT TABXY (21,17) ;“ PRINT TABXY (21,18) ;” Ypos=3 FOR Z=0 TO 1 Bit=128 Xpos=7 ! Do it for each bit REPEAT Quot=Value DIV Bit Agilent 8169A Polarization Controller, Second Edition...
  • Page 87 IF Value<>0 THEN PRINT TABXY(21,17);Value,A$ 1290 UNTIL Value=0 1300 1310 ! Clear the Status structure and reenable the interrupt before returning 1320 1330 OUTPUT Pol;"*CLS" 1340 ENABLE INTR 7 1350 1360 RETURN 1370 1380 Agilent 8169A Polarization Controller, Second Edition...

  • Page 88: Example 3 - Finding The Optimum Transmission Sop

    Figure 15 Setup for setting the position of the polarizing filter. 3 Switch on both instruments, and enable the laser source. 4 Set the channel with the sensor module to the wavelength of the source, and select the default averaging speed (200 ms). Agilent 8169A Polarization Controller, Second Edition...
  • Page 89 ! Find the position of the polarizing filter, that allows the maximum ! power through Angle=0 Inc=10 Maxward=False OUTPUT Mm;"read2:power?" ENTER Mm;Maxpow REPEAT Angle=Angle+Inc OUTPUT Pol;"pos:pol ";Angle OUTPUT Mm;"read2:power?" ENTER Mm;Newpow IF Newpow<Maxpow THEN IF Maxward=True THEN Agilent 8169A Polarization Controller, Second Edition...
  • Page 90 OUTPUT Pol;"circle:epsilonb ";Angle OUTPUT Mm;"read2:power?" ENTER Mm;Newpow IF Newpow>Minpow THEN IF Minward=True THEN Inc=-Inc/2 ELSE 1000 Inc=-Inc 1010 Minward=True 1020 END IF 1030 ELSE 1040 Minpow=Newpow 1050 Minward=True 1060 END IF 1070 UNTIL ABS(Inc)<.05 Agilent 8169A Polarization Controller, Second Edition...
  • Page 91 ! Now set the optimum by moving to the opposite side of the 1100 ! sphere 1110 1120 OUTPUT Pol;"circle:epsilonb ";Angle+180 1130 1140 ! And finish . . . 1150 1160 OUTPUT Mm;"sour:pow:state off" 1170 Agilent 8169A Polarization Controller, Second Edition...

  • Page 92: Example 4 - Finding The Polarization Dependence

    (200ms) [Press to select T, hold to reset T]. When prompted by the program, you should connect the DUT into the setup, disturbing the setup as little as possible. Agilent 8169A Polarization Controller, Second Edition...
  • Page 93 ! Find the position of the polarizing filter, that allows the maximum ! power through Angle=0 Inc=10 Maxward=False OUTPUT Mm;"read2:power?" ENTER Mm;Maxpow REPEAT Angle=Angle+Inc OUTPUT Pol;"pos:pol ";Angle OUTPUT Mm;"read2:power?" ENTER Mm;Newpow IF Newpow<Maxpow THEN IF Maxward=True THEN Agilent 8169A Polarization Controller, Second Edition...
  • Page 94 FOR Reading=1 TO 500 OUTPUT Mm;"read2:pow?" ENTER Mm;Power IF Power<Minpow THEN Minpow=Power IF Power>Maxpow THEN Maxpow=Power NEXT Reading ! Calculate (and display) the difference PRINT TABXY(10,12);"Polarization Dependence",Maxpow-Minpow;"dB" ! Tidy up and leave OUTPUT Pol;"abort" OUTPUT Mm;"sour:pow:state off" Agilent 8169A Polarization Controller, Second Edition...

  • Page 95: Installation

    Claims and Repackaging ......106 Return Shipments to Agilent ..... . 107 Agilent 8169A Polarization Controller, Second Edition...

  • Page 96: Safety Considerations

    Failure tocomply with these precautions or with specific warnings elsewhere inthis manual violates safety standards of design, manufacture, andintended use of the instrument. Agilent Technologies assumes noliability for the customer’s failure to comply with these requirements. General...

  • Page 97: Ac Line Power Supply Requirements

    Installation AC Line Power Supply Requirements The Agilent 8169A can operate from any single-phase AC power source that supplies between 100V and 240V ±10%, at a frequency in the range from 50 to 60Hz. The maximum power consumption is 45VA with all options installed.
  • Page 98 WARN IN G CAU T ION Agilent 8169A does not have a floating earth. The Agilent 8169A is not designed for outdoor use. To prevent WARN IN G CAU T ION potential fire or shock hazard, do not expose the instrument to rain or other excessive moisture.

  • Page 99: Replacing The Fuse

    3 Check and replace the fuse as necessary making sure that the fuse is always in the top position of the fuse holder, and the bridge is in the bottom. 4 Place the fuse holder back in the instrument, and push it until the catch clicks back into place. Agilent 8169A Polarization Controller, Second Edition...

  • Page 100: Replacing The Battery

    The following summarizes the Agilent 8169A operating environment ranges. In order for the polarization controller to meet specifications, the operating environment must be within these limits. The HP 8169A is not designed for outdoor use. To prevent potential WARN IN G CAU T ION fire or shock hazard, do not expose the instrument to rain or other excessive moisture.

  • Page 101: Humidity

    Installation Humidity The operating humidity for the Agilent 8169A is 15% to 95% from 0°C to 40°C. Altitude The Agilent 8169A may operate at up to 10,000 feet. Installation Category and Pollution Degree The Agilent 8169A has Installation Category II and Pollution Degree 2 according to IEC 60664.

  • Page 102: Switching On The Polarization Controller

    The Trigger Output is a standard TTL level signal. A maximum of between 0 V and +5 V can be applied as an external CAU T ION voltage to the Trigger Output BNC connector. Agilent 8169A Polarization Controller, Second Edition...

  • Page 103: Gpib Interface

    (6-32 UNC) that have a shiny nickel finish. It is recommended that you do not stack more than three CAU T ION connectors, one on top of the other. Agilent 8169A Polarization Controller, Second Edition...

  • Page 104: Gpib Logic Levels

    Agilent Service Office. The Sales/Service Office will arrange for repair or replacement of the unit without waiting for settlement of the claim against the carrier. Agilent 8169A Polarization Controller, Second Edition...

  • Page 105: Return Shipments To Agilent

    Protect control panel with cardboard. 4 Seal shipping container securely. 5 Mark shipping container FRAGILE to encourage careful handling. 6 In any correspondence, refer to instrument by model number and serial number. Agilent 8169A Polarization Controller, Second Edition...
  • Page 106 Installation Agilent 8169A Polarization Controller, Second Edition...
  • Page 107 Option 021, Straight Contact Connector... . . 111 Option 022, Angled Contact Connector ... . . 112 Agilent 8169A Polarization Controller, Second Edition...

  • Page 108: Instrument And Options

    • GPIB Cable, 10833C, 4 m (13.2 ft.) • GPIB Cable, 10833D, 0.5 m (1.6 ft.) • GPIB Adapter, 10834A, 2.3 cm extender. Connector Interfaces and Other Accessories The polarization controller is supplied with one of three connector interface options. Agilent 8169A Polarization Controller, Second Edition...

  • Page 109: Option 021, Straight Contact Connector

    1 attach your connector interface (see the list of connector interfaces below) to the interface adapter, 2 then connect your cable. Figure 23 Straight Contact Connector Configuration Table 20 Connector Interface Description Model No. 81000WI 81000GI Diamond HMS-10 81000AI DIN 47256 81000SI FC/PC 81000FI 81000KI 81000VI Agilent 8169A Polarization Controller, Second Edition...

  • Page 110: Option 022, Angled Contact Connector

    1 attach your connector interface (see the list of connector interfaces below) to the interface adapter, 2 then connect your cable. Figure 24 Angled Contact Connector Configuration Table 21 Connector Interface Description Model No. Diamond HMS-10 (DIN) 81000SI FC/APC 81000FI SC/APC 81000KI Agilent 8169A Polarization Controller, Second Edition...
  • Page 111 Other Specifications ......115 Declaration of Conformity......116 Agilent 8169A Polarization Controller, Second Edition...

  • Page 112: Introduction

    >60 dB Power Requrement 48 to 60 Hz 100/120/220/240 V 45 VA Weight 9 kg (20 lb) Dimensions (H x W x D) 10 x 42.6 x 44.5 cm 3.9 x 16.8 x 17.5 in Agilent 8169A Polarization Controller, Second Edition...

  • Page 113: Other Specifications

    Arbeitsplatz 35dBA Normal operation <20dBA (<3.2Bel). normaler Betrieb <20dBA (<3.2Bel). Data are results from type tests per ISO 7779 (EN Die Angabe ist das Ergebnis einer Typprüfunggem 27779) gemäß ISO 7779 (EN 27779) Agilent 8169A Polarization Controller, Second Edition...

  • Page 114: Declaration Of Conformity

    Specifications Declaration of Conformity Agilent 8169A Polarization Controller, Second Edition...
  • Page 115 Example ..........129 Agilent 8169A Polarization Controller, Second Edition...

  • Page 116: Introduction

    81109AC Diamond HMS-10 / HRL-Diamond HMS-10 / Patchcord 81101BC Diamond HMS-10 Bare Fiber Patchcord 81102BC Diamond HMS-10 / HRL-Bare Fiber Patchcord 81101PC Diamond HMS-10 PC Patchcord 81102SC Diamond HMS-10 /HRL-DIN 47256/4108 Patchcord 81113PC DIN 47256/4108-Super PC Patchcord TECOS “IFOS-1560CW” Tunable Filter Agilent 8169A Polarization Controller, Second Edition...

  • Page 117: Insertion Loss Variation With Rotation Of L/4 And L/2 Plates

    • For option #020 first splice a Agilent 81102BC patchcord to the pigtail of the Pol- port. • Make sure that all instruments have warmed up. • Fix all cables with tape so that they won't move during measurements. Agilent 8169A Polarization Controller, Second Edition...
  • Page 118 , press type 100 on the numeric keypad, press c Activate the Optical Output. 5 Set up the 8169A (DUT) a Set the polarizing _lter for maximum transmission (see \Setting the Position of the Polarizing Filter" in Chapter 2). b Press...
  • Page 119 10 Press to get back to MEASURE Mode. 11 Calculate the difference between the \Maximum Power" and the “Minimum λ λ Power" as the result for \Insertion Loss Variation with rotation of /4 and plates". Agilent 8169A Polarization Controller, Second Edition...

  • Page 120: Example

    0.060 dB 0.060 dB 1510 nm -32.510 dBm -32.539 dBm 0.019 dB 0.060 dB 1540 nm -32.444 dBm -32.465 dBm 0.021 dB 0.060 dB 1560 nm -32.506 dBm -32.526 dBm 0.060 dB 0.060 dB Agilent 8169A Polarization Controller, Second Edition...

  • Page 121: Insertion Loss Versus Wavelength

    , type 100 on the numeric keys, press c Activate the 8168A. 5 Set up the 8169A. a Set 8169A to Pol=0 (home position): press b Select the “Circle" application: press 6 Optimize transmission through 8169A: a Set the polarizing _lter for maximum transmission (see \Setting the Position of the Polarizing Filter"...
  • Page 122 Figure 26 Test Setup for Measuring the Reference PowerIf you're testing an option #020 you need to cut the spliced patchcords first µ 11 Set 8168A to the wavelength to 1470nm, Output Power to 100 Agilent 8169A Polarization Controller, Second Edition...
  • Page 123 The maximum value applies for Maximum Insertion Loss specification. 18 Calculate the difference of maximum and minimum value as the result of “Variation of Insertion Loss with Wavelength". Agilent 8169A Polarization Controller, Second Edition...

  • Page 124: Example

    1570 nm -30.133 dBm -31.466 dBm 1.333 dB Maximum Insertion Loss 1.366 dB 1.5 dB Minimum Insertion Loss 1.296 dB Difference 0.070 dB - variation of insertion loss with Wavelength 0.07 dB 0.2 dBpp _____dB Agilent 8169A Polarization Controller, Second Edition...

  • Page 125: Extinction Ratio Of Polarizer

    • For option #020 first splice a Agilent 81101BC patchcord to the pigtail of the λ /2-port • Make sure that all instruments have warmed up. • Fix all cables with tape so that they won't move during measurements. Agilent 8169A Polarization Controller, Second Edition...
  • Page 126 6 Adjust the tunable filter to get maximum transmission: 8153A display shall show maximum reading (minimum value at negative sign). 7 Set 8169A (DUT) to maximum transmission: a Set the polarizing _lter for maximum transmission (see “Setting the Position of the Polarizing Filter" in Chapter 2).

  • Page 127: Example

    Maximum Measurement Spec. Spec. Certainty Extinction Ratio Wavelength Extinction Ratio 1470 nm 40 dB 43.5 dB 1510 nm 45 dB 48.2 dB 1530 nm 45 dB 50.6 dB 1560 nm 40 dB 44.5 dB Agilent 8169A Polarization Controller, Second Edition...
  • Page 128 Special Notes: ______________________________________________________________________ ______________________________________________________________________ ______________________________________________________________________ ______________________________________________________________________ ______________________________________________________________________ ______________________________________________________________________ ______________________________________________________________________ Table 27 Performance Test for the Agilent 8169A Option 020 Test Equipment Used Page 2 of 3 Description Model No. Trace No Cal. Due Date Tunable Laser Source HP 8168C #023...
  • Page 129 ____________________________ ____________ ____________ ____________ ____________________________ ____________ ____________ ____________ Table 28 Performance Test for the Agilent 8169A Polarization Controller Option 020 Model HP 8169A Polarization Controller Option Report No._____________ Date _______________ Measure Test Max. ment Uncer Test Description Min. Spec. Result Spec.
  • Page 130 Minimum Insertion Loss ____dB Difference ______dBpp - variation of insertion loss with Wavelength ________dBpp _______dBpp Table 30 Performance Test for the Agilent 8169A Polarization Controller Option 020 Model HP 8169A Polarization Controller Option Report No._____________ Date _______________ Measure Test Max.
  • Page 131 How to clean large area lenses and mirrors ....156 Other Cleaning Hints ......159 Agilent 8169A Polarization Controller, Second Edition...
  • Page 132 If you are unsure of the correct cleaning procedure for your optical device, we recommend that you first try cleaning a dummy or test device. Agilent Technologies assume no liability for the customer’s failure to comply with these requirements. Agilent 8169A Polarization Controller, Second Edition...

  • Page 133: Safety Precautions

    Use a dry cloth, or one slightly dampened with water, to clean the ex- ternal case parts. Do not attempt to clean internally. • Do not install parts or perform any unauthorized modification to optical devices. • Refer servicing only to qualified and authorized personnel. Agilent 8169A Polarization Controller, Second Edition...

  • Page 134: Why Is It Important To Clean Optical Devices

    In this chapter, we want to suggest ways to help you clean your various optical devices, and thus significantly improve the accuracy and repeatability of your lightwave measurements. Agilent 8169A Polarization Controller, Second Edition...

  • Page 135: What Materials Do I Need For Proper Cleaning

    • Compressed air Dust and shutter caps All of Agilent Technologies’ lightwave instruments are delivered with either laser shutter caps or dust caps on the lightwave adapter. Any cables come with covers to protect the cable ends from damage or contamination.
  • Page 136 Use care when cleaning, and avoid pressing on your optical device with the tissue. Pressing too hard may lead to scratches on the surface or misalignment of your device. Just rub gently over the surface using a small circular movement. Agilent 8169A Polarization Controller, Second Edition...
  • Page 137 First spray into the air, as the initial stream of compressed air could contain some condensation or propellant. Such condensation leaves behind a filmy deposit. Please be friendly to your environment and use a CFC-free aerosol. Agilent 8169A Polarization Controller, Second Edition...

  • Page 138: Additional Cleaning Equipment

    Ensure that your liquid soap has no abrasive properties or perfume in it. You should also avoid normal washing up liquid, as it can cover your device in an iridescent film after it has been air dried. Agilent 8169A Polarization Controller, Second Edition...
  • Page 139 Take care never to look into the end of a fiber or any other optical component, when they are in use. This is because the laser can seriously damage your eyes. Agilent 8169A Polarization Controller, Second Edition...

  • Page 140: Preserving Connectors

    Always keep the caps on the equipment when it is not in use. All of Agilent Technologies’ lightwave instruments and accessories are shipped with either laser shutter caps or dust caps. If you need additional or replacement dust caps, contact your nearest Agilent Technologies Sales/Service Office.

  • Page 141: Cleaning Instrument Housings

    Do not open the instruments as there is a danger of electric shock, or electrostatic discharge. Opening the instrument can cause damage to sensitive components, and in addition your warranty will be invalidated. Agilent 8169A Polarization Controller, Second Edition...

  • Page 142: General Cleaning Procedure

    To assess the projection of the emitted light beam you can use an infrared sensor card. Hold the card approximately 5 cm from the output of the connector. The invisible emitted light is projected onto the card and becomes visible as a small circular spot. Agilent 8169A Polarization Controller, Second Edition...
  • Page 143 Use this procedure when there is greasy dirt on the connector: 1 Moisten a new cotton swab with isopropyl alcohol. 2 Clean the connector by rubbing the cotton swab over the surface using a small Agilent 8169A Polarization Controller, Second Edition...

  • Page 144: How To Clean Optical Head Adapters

    Use this procedure when there is greasy dirt on the adapter: 1 Moisten a new cotton swab with isopropyl alcohol. 2 Clean the adapter by rubbing the cotton swab over the surface using a small circular movement. Agilent 8169A Polarization Controller, Second Edition...

  • Page 145: How To Clean Connector Interfaces

    Never use any kind of solvent when cleaning a bare fiber adapter as CAU T ION solvents can: - Damage the foam inside some adapters. - Deposit dissolved dirt in the groove, which can then dirty the surface of an inserted fiber. Agilent 8169A Polarization Controller, Second Edition...
  • Page 146 Some lenses have special coatings that are sensitive to solvents, grease, liquid and mechanical abrasion. Take extra care when cleaning lenses with these coatings. Some instruments, for example, Agilent’s optical heads have an optical glass plate to protect the sensor. Agilent 8169A Polarization Controller, Second Edition...

  • Page 147: How To Clean Instruments With A Fixed Connector Interface

    3 Using a new, dry cotton swab remove the alcohol, any dissolved sediment and dust. 4 Blow away any remaining lint with compressed air. How to clean instruments with a fixed connector interface Agilent 8169A Polarization Controller, Second Edition...

  • Page 148: How To Clean Instruments With A Physical Contact Interface

    Never look into an optical output, because this can seriously WARN IN G damage your eyesight. Agilent 8169A Polarization Controller, Second Edition...
  • Page 149 The connection should be made immediately after cleaning and inspection to prevent the N O TE connection (connector, connector interface and physical connector interface) from getting dusty or dirty again. Agilent 8169A Polarization Controller, Second Edition...
  • Page 150 N O TE connection. The fiber end faces must be visually inspected using a microscope with a magnification of at least 400x. For recommended fiber inspection microscopes, please refer to Agilent 's service team personnel. Agilent 8169A Polarization Controller, Second Edition...

  • Page 151: How To Clean Instruments With A Recessed Lens Interface

    3 Take a new, dry soft tissue and remove the alcohol, dissolved sediment and dust, by rubbing gently over the surface using a small circular movement. 4 Blow away any remaining lint with compressed air. Agilent 8169A Polarization Controller, Second Edition...

  • Page 152: How To Clean Optical Devices Which Are Sensitive To Mechanical Stress And Pressure

    Be very careful when using or cleaning these devices. Do not use cotton swabs or soft tissues, as there is the danger that you cannot remove the lint and that the device will be destroyed by becoming mechanically distorted. Agilent 8169A Polarization Controller, Second Edition...
  • Page 153 1 Put the optical device into a bath of isopropyl alcohol, and wait at least 10 minutes. 2 Remove the fluid using compressed air at some distance and with low pressure. If there are any streaks or drying stains on the surface, repeat the whole cleaning procedure. Agilent 8169A Polarization Controller, Second Edition...

  • Page 154: Additional Cleaning Information

    Lens assemblies consisting of several lenses are not normally sealed. Therefore, use as little liquid as possible, as it can get between the lenses and in doing so can change the properties of projection. Agilent 8169A Polarization Controller, Second Edition...
  • Page 155 1 Put the film on the surface and wait at least 30 minutes to make sure that the film has had enough time to dry. 2 Remove the film and any dirt with special adhesive tapes. Agilent 8169A Polarization Controller, Second Edition...
  • Page 156 2 Take a new, dry soft tissue and remove the alcohol, dissolved sediment and dust, by rubbing gently over the surface using a small circular movement. 3 Blow away remaining lint with compressed air. Agilent 8169A Polarization Controller, Second Edition...

  • Page 157: Other Cleaning Hints

    Never open the instruments as they can be damaged. Opening the instruments puts you in danger of receiving an electrical shock from your device, and renders your warranty void. Agilent 8169A Polarization Controller, Second Edition...
  • Page 158 Cleaning Information Other Cleaning Hints Agilent 8169A Polarization Controller, Second Edition...
  • Page 159 Query Errors ......... 167 Agilent 8169A Polarization Controller, Second Edition...

  • Page 160: Display Messages

    So Selftest Error 0010 would mean that the DSP (Digital Signal Processor) Communications had failed, Selftest Error 12 would mean that the DSP Communications had failed, and so had the Battery RAM. A value of zero shows no errors. Agilent 8169A Polarization Controller, Second Edition...

  • Page 161: Gpib Messages

    • 113 Undefined header. This header is not defined for use with the instrument. • 114 Header suffix out of range. The header contained an invalid character. This message sometimes occurs because the parser is trying to interpret a non-header as a header. Agilent 8169A Polarization Controller, Second Edition...
  • Page 162 • 161 Invalid block data. The block data is incorrect (for example, an END message was received before the length was satisfied). • 168 Block data not allowed. Block data was found where none is allowed. Agilent 8169A Polarization Controller, Second Edition...
  • Page 163 • 240 Hardware error. Shows that a command could not be executed due to a hardware error but the control block cannot be more specific. • 241 Hardware missing. Shows that a command could not be executed because of missing instrument hardware. Agilent 8169A Polarization Controller, Second Edition...
  • Page 164 • 330 Self-test failed. Further information about the self-test failure is available by using *TST?. • 350 Queue overow. The error queue has overown. This error is written to the last position in the queue, no further errors are recorded. Agilent 8169A Polarization Controller, Second Edition...
  • Page 165 • 440 Query UNTERMINATED after indefinite response. Two queries were received in the same message. The error occurs on the second query if the first requests an indefinite response, and was already executed. Agilent 8169A Polarization Controller, Second Edition...
  • Page 166 Error Messages Agilent 8169A Polarization Controller, Second Edition...
  • Page 168  Agilent Technologies, Deutschland GmbH 2002-2004 Printed in Germany November 2004 Third edition, October 2004 08169-90A01 Agilent Technologies...

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