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Proceedings Paper

Four-sensor time-division-multiplexed Michelson topology for low-frequency measurands
Author(s): Craig McGarrity; David A. Jackson
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Paper Abstract

A time division multiplexed topology has been implemented using four Michelson sensor simulators and a transceiver link. The topology ensures that no light returning from the network is injected back into the laser diode. The phase sensitivity of the sensors is limited by the phase noise of the laser. Coherent noise due to Rayleigh backscattered light mixing with the signal is significantly smaller than this phase noise. A demodulated sensitivity of 25 (mu) rad/(root)Hz at 1 kHz has been achieved using the differentiate-cross-multiply technique.

Paper Details

Date Published: 5 March 1993
PDF: 10 pages
Proc. SPIE 1797, Distributed and Multiplexed Fiber Optic Sensors II, (5 March 1993); doi: 10.1117/12.141287
Show Author Affiliations
Craig McGarrity, Univ. of Kent at Canterbury (United Kingdom)
David A. Jackson, Univ. of Kent at Canterbury (United Kingdom)


Published in SPIE Proceedings Vol. 1797:
Distributed and Multiplexed Fiber Optic Sensors II
John P. Dakin; Alan D. Kersey, Editor(s)

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