The design of interferometric sensors, fabricated on single integrated optic chips for use in a multiplexed system, is considered. A multiple-pass interferometer using a resonant cavity appears extremely attractive, since it has a large path imbalance which may easily be varied. Sensors may therefore be fabricated that are highly sensitive and easily individualized. The resonant cavity sensor is analyzed, and response curves are presented under a variety of conditions. Experimental results are presented for temperature sensors fabricated in LiNbO3.
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R.R.A. Syms (1985) studied this question.
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