Demodulators For Optical Fiber Interferometers With [3 x3] Outputs

Thumbnail Image
Files
US5313266.pdf (2.45 MB)
Authors
KeoIian, Robert M.
Garrett, Steven L.
Cameron, Charles B.
Subjects
Advisors
Date of Issue
1994-05-17
Date
Publisher
Language
Abstract
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.
Type
Patent
Description
URI
https://hdl.handle.net/10945/7219
Series/Report No
Department
Organization
Naval Postgraduate School (U.S.)
Identifiers
5,313,266
NPS Report Number
Sponsors
Funder
Format
Citation
Distribution Statement
Rights
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
Publications