Optical distribution system for sensors

Details Optical distribution system for sensors Optical distribution system for sensors

2007-03-27

2007-03-27

Connelly-Cushwa, Michelle (Department: 2874)

Optical waveguides

With optical coupler

Input/output coupler

C385S012000, C385S024000

Reexamination Certificate

active

10891191

ABSTRACT:
A single fiber optic cable is configured as a multiplexer/demultiplexer that allows wavelengths to exit the fiber along its length and feed an optical sensor network in a cost efficient and space efficient manner. The fiber may be implemented as a multimode optical fiber that includes a plurality of Fiber Bragg Gratings that are tilted relative to the axis of the multimode fiber. Each grating is used to reflect multiple wavelengths of light out of the fiber depending on the diameter and the number of principal modes of the fiber. The plurality of FBGs allows light at multiple wavelengths to be extracted from the fiber at multiple locations along its length. At each location, reflected light at multiple wavelengths extracted from the multimode fiber may be fed through a plurality of fiber optic paths to optical sensors banks of optical sensors.

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