Related Manuals for New Focus 100X
Summary of Contents for New Focus 100X
- Page 1 Models 100X, 101X & 102X F I B E R - C O U P L E D , U L T R A H I G H - S P E E D P H O T O D E T E C T O R M O D U L E S...
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Page 2: Handling Precautions
The Models 101X and 102X are high-speed InGaAs photodetector modules for detection of light of wavelengths 950 to 1650 nm. The Models 100X are GaAs photodetector modules for detection of light of wavelengths 400 to 900 nm. All are 50-Ω terminated, except the 1001 and 1004 which have 100-Ω... - Page 3 4. Connect a voltmeter to the “Bias Monitor” SMA connector. 5. Press ”Batt Chk“ button. The voltage should be 3.5 to 5 V (-3.5 to -5 V) for the 101X and 102X (100X) detectors. 6. Release the ”Batt Chk“ button. Without an optical input, the volt- age should be less than 10 mV.
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Page 4: Introduction
New Focus offers a total of eight models, allowing you to match your wavelength of interest and the connector style of your instru- mentation. The Models 101X and 102X are high-speed InGaAs photodetector modules for detection of light of wavelengths 950 to 1650 nm. -
Page 5: Operation
The photodiode bias voltage is momentarily applied to the “Bias Monitor” SMA connector. A reading of -4.5 V for Models 100X or 5 V for Models 101X and 102X on this connector is typical with a new battery; the battery should be replaced when the voltage reaches -3.5 V for the 100X series... - Page 6 OPERATION 1. If you do not currently have an ST- or FC-terminated optical fiber, use either a pigtail assembly or a fiber collimator (see Table 1), and align the fiber so that light exits the output fiber connector. With a pigtail assembly, use a fiber aligner such as the Model 9091 and its accessories;...
- Page 7 Patch Cable 1.1 to 1.6 µm wavelength Model 1222 ST-FC (2 meters) These assemblies are available from New Focus. Collimators require an Opti-Claw tilt-mount such as the Model 9854. Pigtail assemblies require a fiber aligner such as the Model 9091.
- Page 8 2. Remove the back panel and replace the battery. 3. Replace the back panel. 4. Check the battery level as described above. Fig. 1 Front, side, and rear views of the Models 100X, 101X, and 102X fiber-coupled photodetector modules. Shown with output K-connector...
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Page 9: Appendix 1: Using An Optical Fiber
APPENDICES APPENDIX 1: USING AN OPTICAL FIBER Single mode optical fiber can provide low loss and low distortion if attention is paid to a few important details. First, if more than one mode is allowed to propagate in a step-index fiber, the bandwidth will be degraded to approximately ƒ... -
Page 10: Appendix 2: Using The Correct
APPENDICES APPENDIX 2: USING THE CORRECT MICROWAVE CONNECTOR The performance you obtain from the Models 100X, 101X and 102X photodetector modules will depend largely on the instru- ment you use to measure its microwave output and how the connection is made to this instrument. The male connector of the photodetector module should be connected directly to the female connector of the instrument. -
Page 11: Appendix 3: Inside The Photodetector Module
The fiber is protected by a sheet metal flange to prevent damage while changing the battery. A simplified schematic is provided in Fig. 2 for your reference. Fig. 2a. Simplified schematic diagram of the 100X series photodetector modules. Microwave Output... - Page 12 APPENDICES Fig. 2b. Simplified schematic diagram of the 101X and 102X series photodetector modules. Microwave Output Microwave Connector Housing – Photodiode Bias Monitor Batt – On/Off...
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Page 13: Troubleshooting
The photodiode bias voltage is momentarily applied to the “Bias Monitor” SMA connector. A reading of -4.5 V for Models 100X or 5 V for Models 101X and 102X on this connector is typical with a new battery; the battery should be replaced when the voltage reaches -3.5 V for the 100X series or... - Page 14 TROUBLESHOOTING Replacing the Battery 1. Turn off the module and remove the two screws on the back panel with a Phillips screwdriver. (See Fig. 1.) 2. Remove the back panel and replace the battery. 3. Replace the back panel. 4. Check the battery level as described above. Basic Optical Test To quickly test whether a photodetector appears to be working, you can perform a simple DC optical test:...
- Page 15 TROUBLESHOOTING sent into the detector will produce little or no output voltage. Note also that if the fiber types are not compatible (single-mode with multi-mode, and vice-versa), this can also be the cause of a very low output voltage. To clean the fiber: 1.
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Page 16: Detector Characteristics
DETECTOR CHARACTERISTICS Model # 1001(1004) 1002(1006) 1011(1014) 1021(1024) Wavelength Range 400-900 nm 400-900 nm 950-1650 nm 950-1650 nm Max. Full Width at • • • 12 ps Half Maximum Min.3-dB Bandwidth • 35 GHz 50 GHz 40 GHz (Electrical) Conversion Gain 6.6 V/W 5 V/W 10 V/W... - Page 17 DETECTOR CHARACTERISTICS Fig 3. Responsivity vs. wavelength for a) Models 100X and b) Models 101X and 102X. Responsivity increases from 0–0.42 A/W over the range of 950–970 nm. 1000 1200 1400 1600 1800 Wavelength, nm...
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Page 18: Warranty, Service & Support
WARRANTY, SERVICE & SUPPORT New Focus, Inc. guarantees its products to be free of defects for one year from the date of shipment. This is in lieu of all other guarantees, expressed or implied, and does not cover incidental or consequential loss. -
Page 19: Table Of Contents
TABLE OF CONTENTS HANDLING PRECAUTIONS ..............2 QUICK START ..................2 INTRODUCTION ..................4 OPERATION ..................5 APPENDIX 1: USING AN OPTICAL FIBER ........9 APPENDIX 2: USING THE CORRECT MICROWAVE CONNECTOR........10 APPENDIX 3: INSIDE THE PHOTODETECTOR MODULE ..11 TROUBLESHOOTING................13 DETECTOR CHARACTERISTICS ............16 WARRANTY, SERVICE & SUPPORT ..........18...