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Proceedings Paper

Balanced PIN-TIA photoreceiver with integrated 3 dB fiber coupler for distributed fiber optic sensors
Author(s): Shubhashish Datta; Sruti Rajagopalan; Shaun Lemke; Abhay Joshi
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Paper Abstract

We report a balanced PIN-TIA photoreceiver integrated with a 3 dB fiber coupler for distributed fiber optic sensors. This detector demonstrates -3 dB bandwidth >15 GHz and coupled conversion gain >65 V/W per photodiode through either input port of the 3 dB coupler, and can be operated at local oscillator power of +17 dBm. The combined common mode rejection of the balanced photoreceiver and the integrated 3 dB coupler is >20 dB. We also present measurement results with various optical stimuli, namely impulses, sinusoids, and pseudo-random sequences, which are relevant for time domain reflectometry, frequency domain reflectometry, and code correlation sensors, respectively.

Paper Details

Date Published: 18 June 2014
PDF: 7 pages
Proc. SPIE 9098, Fiber Optic Sensors and Applications XI, 90980Y (18 June 2014); doi: 10.1117/12.2050325
Show Author Affiliations
Shubhashish Datta, Discovery Semiconductors, Inc. (United States)
Sruti Rajagopalan, Discovery Semiconductors, Inc. (United States)
Shaun Lemke, Discovery Semiconductors, Inc. (United States)
Abhay Joshi, Discovery Semiconductors, Inc. (United States)

Published in SPIE Proceedings Vol. 9098:
Fiber Optic Sensors and Applications XI
Henry H. Du; Gary Pickrell; Eric Udd; Christopher S. Baldwin; Jerry J. Benterou; Anbo Wang, Editor(s)

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