Demodulators For Optical Fiber Interferometers With [3 x3] Outputs

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Author
KeoIian, Robert M.
Garrett, Steven L.
Cameron, Charles B.
Date
1994-05-17Metadata
Show full item recordAbstract
A highly sensitive optical fiber interferometer sensor
comprising a laser light source, a [2 X 2] optical fiber
coupler to split the beam in two, a differential transducer
which converts a signal of interest into optical
phase shift in the laser light transmitted through the two
optical fibers in the interferometer and a [3 X 3] optical
fiber complex which recombines the two beams, producing
interference which can be electronically detected.
The use of the [3 X 3] coupler permits Passive
Homodyne demodulation of the phase-modulated signals
provided by the interferometer without feedback
control or modulation of the laser itself and without
requiring the use of electronics within the interferometer
Description
Patent
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This publication is a work of the U.S. Government as defined in Title 17, United States Code, Section 101. Copyright protection is not available for this work in the United States.Collections
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