Distributed vibration sensing system using multimode fiber

Details Distributed vibration sensing system using multimode fiber Distributed vibration sensing system using multimode fiber

2008-06-06

2010-02-23

Peng, Charlie (Department: 2883)

Optical waveguides

Optical waveguide sensor

Reexamination Certificate

active

07668411

ABSTRACT:
An optical time domain reflectometry (OTDR) system is configured to detect Rayleigh backscatter reflected from a multimode sensing optical fiber. The system includes a single spatial mode filtering system to select a single speckle of the Rayleigh backscatter produced in response to an optical pulse launched into the multimode fiber. The detected single speckle may be used for distributed disturbance (vibration) detection.

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