Passive interrogation of an extrinsic Fabry-Pérot interferometer using a three-wavelength method

Yi Jiang; Caijie Tang

doi:10.1117/1.3156018

1 June 2009 Passive interrogation of an extrinsic Fabry-Pérot interferometer using a three-wavelength method

Yi Jiang, Caijie Tang

Author Affiliations +

Optical Engineering, Vol. 48, Issue 6, 064401 (June 2009). https://doi.org/10.1117/1.3156018

Abstract

A three-wavelength method is developed to interrogate an extrinsic Fabry-Pérot interferometer (EFPI) for the measurement of a dynamic measurand. Three signals 120 deg out of phase are created by using three fiber Bragg gratings (FBGs). A phase demodulator, which is the same as that used for demodulating a 3×3 coupler-based interferometer, is used to measure the phase change. A minimum detectable phase of 0.43 μrad/Hz^1/2 is achieved.

©(2009) Society of Photo-Optical Instrumentation Engineers (SPIE)

Citation Download Citation

Yi Jiang and Caijie Tang "Passive interrogation of an extrinsic Fabry-Pérot interferometer using a three-wavelength method," Optical Engineering 48(6), 064401 (1 June 2009). https://doi.org/10.1117/1.3156018

Published: 1 June 2009

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