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DET01CFC(/M)

Fiber Input
InGaAs Biased Detector

User Guide

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Summary of Contents for DET01CFC

Page 1: ...DET01CFC M Fiber Input InGaAs Biased Detector User Guide...

Page 2: ...4 5 Junction Capacitance 6 4 6 Bandwidth and Response 6 4 7 Terminating Resistance 7 4 8 Shunt Resistance 7 4 9 Series Resistance 7 4 10 Damage Threshold 7 4 11 Battery Replacement 8 Chapter 5 Common...

Page 3: ...ol Description Direct Current Alternating Current Both Direct and Alternating Current Earth Ground Terminal Protective Conductor Terminal Frame or chassis Terminal Equipotentiality On Supply Off Suppl...

Page 4: ...ng The FC PC connector provides easy coupling to fiber based light sources The output uses an SMA jack to minimize size and maximize frequency response The maximum bandwidth is 1 2 GHz and the detecto...

Page 5: ...cable i e CA28xx to the output of the DET Select and install a terminating resistor to the remaining end of the cable BNC Side and connect to a voltage measurement device See Chapter 4 page 7 to deter...

Page 6: ...vel of the output current to expect and the responsivity based upon the incident light Depicted in Figure 1 is a junction photodiode model with basic discrete components to help visualize the main cha...

Page 7: ...e the photodiode is zero biased The flow of current out of the device is restricted and a voltage builds up This mode of operation exploits the photovoltaic effect which is the basis for solar cells W...

Page 8: ...on the bandwidth and the response of a photodiode It reaffirms that larger diode areas encompass a greater junction volume with increased charge capacity In a reverse bias application the depletion w...

Page 9: ...is dependent on the photodiode material For example and InGaAs detector has a shunt resistance in the order of 10 M while a Ge detector is in the k range This can significantly affect the noise curre...

Page 10: ...wavelength When not light is applied the supply current turns out to be very small and the battery hardly degrades Locate the battery cap directly above the output BNC Unthread the cap and remove the...

Page 11: ...tocurrent is based upon the incident light and wavelength and can be viewed on the oscilloscope by attaching a load resistance on the output The function of the RC Filter is to filter any high frequen...

Page 12: ...volts across the photodiode holding point A at the same potential as point B by the operational amplifier This eliminates the possibility of dark current Photoconductive mode We reverse bias the phot...

Page 13: ...a fluorescent light and verify that a 60 Hz 50 Hz outside the US signal appears on the scope If so the device should be operating properly and the problem may be with the light source or alignment The...

Page 14: ...Voltage VR 12 V Dark Currenta d ID 0 235 nA Output Voltage VOUT 0 to 3 5 V 50 e 0 to 10 V Hi Z General Input FC PC Fiber Connector Output SMA DC Coupled Package Size 2 21 x 1 40 x 0 80 56 1 mm x 35 6...

Page 15: ...age 13 production units Bandwidth is defined as the boundary at which the output of the circuit is 3 dB below the nominal output 7 1 Response Curve 0 0 2 0 4 0 6 0 8 1 1 2 800 900 1000 1100 1200 1300...

Page 16: ...InGaAs Biased Detector Chapter 7 Specifications Page 14 15830 D02 7 2 Mechanical Drawing Visit the web for a more detailed mechanical drawing...

Page 17: ...InGaAs Biased Detector Chapter 8 Certificate of Conformance Rev G April 17 2017 Page 15 Chapter 8 Certificate of Conformance...

Page 18: ...products such as Pure OEM products that means assemblies to be built into a unit by the user e g OEM laser driver cards Components Mechanics and optics Left over parts of units disassembled by the use...

Page 19: ...urope thorlabs com Scandinavia Thorlabs Sweden AB Bergfotsgatan 7 431 35 M lndal Sweden Tel 46 31 733 30 00 Fax 46 31 703 40 45 www thorlabs com Email scandinavia thorlabs com France Thorlabs SAS 109...

Page 20: ...www thorlabs com...

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