Multimode Rayleigh Sensor Enabled by Holographic Demodulation

Matthew J. Murray; Allen Davis; Brandon Redding

doi:10.1364/OFS.2018.ThD1

26th International Conference on Optical Fiber Sensors
OSA Technical Digest (Optica Publishing Group, 2018),
paper ThD1
•https://doi.org/10.1364/OFS.2018.ThD1

Multimode Rayleigh Sensor Enabled by Holographic Demodulation

Matthew J. Murray, Allen Davis, and Brandon Redding

Optical Fiber Sensors 2018

Lausanne Switzerland
24–28 September 2018
ISBN: 978-1-943580-50-7

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M. J. Murray, A. Davis, and B. Redding, "Multimode Rayleigh Sensor Enabled by Holographic Demodulation," in 26th International Conference on Optical Fiber Sensors, OSA Technical Digest (Optica Publishing Group, 2018), paper ThD1.

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Abstract

We propose and demonstrate a multimode fiber based Rayleigh sensor that uses holographic detection to record the time-varying backscattered speckle field. The sensor exhibits a minimum phase noise of −80dB [rel. rad²/Hz] and 50kHz bandwidth.

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