Thermal noise in optical fibers: Mach-Zehnder vs Sagnac interferometers

Kjell Krakenes; Kjell Blotekjaer

doi:10.1117/12.184993

14 September 1994 Thermal noise in optical fibers: Mach-Zehnder vs Sagnac interferometers

Kjell Krakenes, Kjell Blotekjaer

Proceedings Volume 2360, Tenth International Conference on Optical Fibre Sensors; (1994) https://doi.org/10.1117/12.184993
Event: 10th Optical Fibre Sensors Conference, 1994, Glasgow, United Kingdom

Abstract

The impact of thermal noise in the fiber on the noise power and signal-to-noise ratio (SNR) of fiber-optic sensors is investigated, and sensors based on Sagnac and Mach- Zehnder interferometers are compared. Mach-Zehnder interferometers exhibit a slightly higher SNR at low frequencies whereas Sagnac interferometers may have a few dB higher SNR at high frequencies.

Citation Download Citation

Kjell Krakenes and Kjell Blotekjaer "Thermal noise in optical fibers: Mach-Zehnder vs Sagnac interferometers", Proc. SPIE 2360, Tenth International Conference on Optical Fibre Sensors, (14 September 1994); https://doi.org/10.1117/12.184993

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