Multimode fiber sensor system with sensor fiber coupled to a det

Optical waveguides – Optical waveguide sensor

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25022719, 385 15, 385 39, G02B 626

Patent

active

051446898

ABSTRACT:
A fiber-optic sensor device utilizing modal interference in a multimode optical sensor fiber, having output light from the sensor fiber coupled to an axially separated detection lead fiber, and having light from the detection lead fiber coupled to a substantially uniform light detector.

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Martin, Le Boudec & Jeunhomme, "Integrating Fiber Optic Vibration Sensor", SPIE vol. 985 Fiber Optic & Laser Sensors VI (1988), pp. 344-348.
Leung et al., "Fiber Optic Line--Sensing System for Perimeter Protection Against Intrusion", Tech. Digest, OFS 86, Tokyo, Japan, pp. 113-116, 1986.

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