Lens-less, Spring-Loaded Diaphragm-Based Fiber Acoustic Sensor

Behrad Habib Afshar; Michel J. F. Digonnet

doi:10.1364/OFS.2018.WD6

26th International Conference on Optical Fiber Sensors
OSA Technical Digest (Optica Publishing Group, 2018),
paper WD6
•https://doi.org/10.1364/OFS.2018.WD6

Lens-less, Spring-Loaded Diaphragm-Based Fiber Acoustic Sensor

Behrad Habib Afshar and Michel J. F. Digonnet

Optical Fiber Sensors 2018

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

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Physical, Chemical and New Elements (WD)

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B. H. Afshar and M. J. F. Digonnet, "Lens-less, Spring-Loaded Diaphragm-Based Fiber Acoustic Sensor," in 26th International Conference on Optical Fiber Sensors, OSA Technical Digest (Optica Publishing Group, 2018), paper WD6.

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Abstract

We describe a new fiber sensor utilizing a spring-loaded diaphragm to detect extremely weak acoustic waves. The sensitivity is ~4 times higher than the previous generation, and the pressure resolution as low as 14.4 µPa/√Hz at 1 kHz.

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