Extrinsic Fabry-Perot interferometer fiber-optic microphone

N. Furstenau; H. Horack; W. Schmidt

doi:10.1109/imtc.1997.604021

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Extrinsic Fabry-Perot interferometer fiber-optic microphone

N. Furstenau H. Horack W. Schmidt

Year: 2002 Vol: 1 Pages: 603-606

DOI: 10.1109/imtc.1997.604021

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Abstract

We describe a new fiber-optic microphone developed as a passive acoustic sensor for traffic monitoring and vehicle classification. It is based on a fiber-optic extrinsic Fabry Perot microinterferometer coupled to an external membrane for modulating the FP cavity length and a low coherent superluminescent diode as light source. Sensitivity and performance are comparable with standard condenser microphones.

Keywords:

Fabry–Pérot interferometer Optical fiber Interferometry Fiber optic sensor Superluminescent diode Optics Sensitivity (control systems) Materials science Microphone Optoelectronics Diode Physics Acoustics Electronic engineering Engineering

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Photonic and Optical Devices

Physical Sciences → Engineering → Electrical and Electronic Engineering

Advanced Fiber Optic Sensors

Physical Sciences → Engineering → Electrical and Electronic Engineering

Advanced MEMS and NEMS Technologies

Physical Sciences → Engineering → Electrical and Electronic Engineering

Extrinsic Fabry-Perot interferometer fiber-optic microphone

Abstract

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