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TEM FiberLock Manual

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TEM Messtechnik GmbH
Grosser Hillen 38
D-30559 Hannover
Tel: +49 (0)511 51 08 96 -31
Fax: +49 (0)511 51 08 96 -38
E-mail: mailto:info@TEM-messtechnik.de
URL: http://www.TEM-Messtechnik.de
FiberLock Manual
TEM Messtechnik GmbH
July 26, 2021
9V - 18V
output
FiberLock
FiberLock
USB
input
www.TEM-Messtechnik.de
power
status
lock
intensity
reset
program

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Summary of Contents for TEM FiberLock

  • Page 1 FiberLock Manual TEM Messtechnik GmbH July 26, 2021 power 9V - 18V output FiberLock FiberLock status lock intensity reset www.TEM-Messtechnik.de input program TEM Messtechnik GmbH Grosser Hillen 38 D-30559 Hannover Tel: +49 (0)511 51 08 96 -31 Fax: +49 (0)511 51 08 96 -38 E-mail: mailto:info@TEM-messtechnik.de...

  • Page 3: Table Of Contents

    FiberLock Manual Contents 1 Delivery Content 2 Basic Operation 2.1 Principles ........

  • Page 4: Delivery Content

    FiberLock Manual Delivery Content Your FiberLock system consists of the following components: FiberLock electronics: contains a pre-amplifier for the photo diode input, a microcontroller for digital signal processing and communication with a PC and output amplifiers to drive the piezo-based actuator...

  • Page 5: Basic Operation

    fiber end itself (e.g. for open fibers without attached fiber connectors) The FiberLock simplifies this process in two ways: Firstly, it can scan the laser in x- and y-directions. This makes finding the fiber aperture much easier and the live display capabilities allow the convenient optimization of other degrees of freedom, such as the focus.

  • Page 6: Recommended Hardware Setup

    FiberLock Manual Optionally, the FiberLock can be connected to a PC via USB. On the one hand, this facilitates to parameterize and customize the electronics. On the other hand, the scanning functionality can visualize the fiber coupling and help to optimize other degrees of freedom, such as the beam angle or the focus.
  • Page 7 Figure 1: Recommended hardware setup for a FiberLock system. Figure 2: Software interface for scans. Figure 2 shows the software interface for the scanning functionality. The scan is started or stopped using the blue and red “START” and “STOP” buttons at the bottom of the frame. The drop-down list to the right of these buttons changes the view angle of the 3D plot.

  • Page 8: Locking

    (c. f. Fig. 3). Start the lock by pressing the “Lock”-LED in the software interface or by pressing the FiberLock’s front panel key. This will start the lock-in regulator, which adds a small circular modulation to the actuator position. If the actuator is not aligned to achieve optimal fiber coupling, this modulation will show in the output intensity.

  • Page 9: Optimization Of All Parameters

    (within the scan range of the actuator), the search function will re-lock within seconds. Saving Settings Any parameter changes are lost as soon as the FiberLock loses power or resets. In order to make changes permanent, the dialed settings must be committed to the microcontroller’s non-volatile memory.
  • Page 10 10 HD-15 connector. Provides the driving signals for the piezo actuator. A typical situation is the following: The FiberLock is switched on, but the optical setup has drifted and the optimal actuator position has changed. This will be indicated by the three front-panel LEDs, which act as a simple but efficient intensity indicator.

  • Page 11: Advanced Operation

    In order to show whether the lock is intact or whether the fiber-coupling drifts when locking is off, the FiberLock has a simple intensity indicator in the form of three LEDs in the front panel. If the intensity is too high, the red LED lights up. If the intensity is too low, only the left green LED will light up.

  • Page 12: Scaled Output Signals

    Scaled Output Signals Please note that the two output signals of the FiberLock are not equally scaled. The output in x- direction is reduced by a factor of 2 to compensate for the fact that mirror tilts in the x-direction deflect the laser stronger than tilts in the y-direction.

  • Page 13: Variable Table

    = value 3.6.2 Variable Table The following table lists FiberLock variables. At the terminal, these can be listed by entering the command “VarDump”. Variable Default Comment...

  • Page 14: Command Table

    FL IsrFreq 12800 21300 loop speed of the regulator 3.6.3 Command Table The following table lists FiberLock commands. At the terminal, these can be listed by entering the command “CmdDump”. Command Arg. 1 Arg. 1 Comment Reset...

  • Page 15: Software Installation

    Files” folder. On Windows Visa or Windows 7 systems, please avoid the “Program Files” folder and choose and a different path, for example “C:/TEM”. The button “OK, install now!” starts copying all required files from the source path to the destination path. During the installation procedure, the installation program checks all required files.

  • Page 16: Installation Of Labview Drivers

    FiberLock Manual Installation of LabView Drivers To install LabView demo VIs and their Sub-VIs, simply copy the content of the folder /TEM/LabView of the installation CD or USB memory stick, resp.., to your local LabView folder. Please note that the NI-VISA package is required, which can be downloaded from the National Instruments web site.

  • Page 17: Upgrading The Firmware

    FiberLock Manual manager. The device will appear as “TEM uC Virtual Com Port” in the device manager of your computer (see figure 4). Figure 4: TEM COM Port in the device manager Upgrading the Firmware Please contact TEM Messtechnik for details about firmware upgrades.

  • Page 18: Connectors And Electrical Specifications

    FiberLock Manual Connectors and Electrical Specifications Mains Power Cable Please use the included power supply. When using a different power adapter, ensure that it provides a direct voltage in the range 9V to 18V and at least 1.5A of current.

  • Page 19: Safety Instructions

    Please keep this manual within easy reach to refer to if needed. Give your FiberLock to third parties only with this manual.

  • Page 20: Customer Service

    FiberLock Manual Customer Service In case of service needs, general questions, need of repair or warranty claims you will get quick and effective support at: TEM Messtechnik GmbH Grosser Hillen 38 D-30559 Hannover Germany Tel: +49 (0)511 51 08 96 -30 Fax: +49 (0)511 51 08 96 -38 E-mail: mailto:info@TEM-messtechnik.de...
  • Page 21 FiberLock Manual Notes FiberLock Manual 21 / 21 July 26, 2021...

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