Analysis Of Low Loss Impedance Matched Fiber-Optic Transceivers For Microwave Signal Transmission

Michael de La Chapelle; Jon J Gulick; Hui-Pin Hsu

doi:10.1117/12.937464

23 February 1987 Analysis Of Low Loss Impedance Matched Fiber-Optic Transceivers For Microwave Signal Transmission

Michael de La Chapelle, Jon J Gulick, Hui-Pin Hsu

Proceedings Volume 0716, High Frequency Optical Communications; (1987) https://doi.org/10.1117/12.937464
Event: Cambridge Symposium-Fiber/LASE '86, 1986, Cambridge, MA, United States

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.

Citation Download Citation

Michael de La Chapelle, Jon J Gulick, and Hui-Pin Hsu "Analysis Of Low Loss Impedance Matched Fiber-Optic Transceivers For Microwave Signal Transmission", Proc. SPIE 0716, High Frequency Optical Communications, (23 February 1987); https://doi.org/10.1117/12.937464

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