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Proceedings Paper

Analysis Of Low Loss Impedance Matched Fiber-Optic Transceivers For Microwave Signal Transmission
Author(s): Michael de La Chapelle; Jon J Gulick; Hui-Pin Hsu
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Paper Abstract

An analysis of fiber-optic link loss and bandwidth based on simple equivalent circuit models for the laser diode and photodiode is presented. The method of modeling the link by defining a transfer coefficient between the current flowing into the active resistance of the laser diode and the current generated at the photodiode allows conventional circuit analysis to be performed. A closed form expression is derived for the link transfer function for both an impedance matched link and an unmatched link. The link loss is shown to be reduced by more than 15 dB by impedance matching the transceiver at microwave frequencies for typical device parameters. The analysis also demonstrates that impedance matched links can actually have a net RF gain with realizable device parameters at frequencies up to X-band. The transfer function for a link with realistic two-element matching circuits is derived. The bandwidth is then determined. These results define a link loss versus bandwidth tradeoff. The analytical results are verified by experiment.

Paper Details

Date Published: 23 February 1987
PDF: 6 pages
Proc. SPIE 0716, High Frequency Optical Communications, (23 February 1987); doi: 10.1117/12.937464
Show Author Affiliations
Michael de La Chapelle, Hughes Aircraft Company (United States)
Jon J Gulick, Hughes Aircraft Company (United States)
Hui-Pin Hsu, Hughes Aircraft Company (United States)

Published in SPIE Proceedings Vol. 0716:
High Frequency Optical Communications
O. Glenn Ramer; Paul Sierak, Editor(s)

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