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Interferometric Fiber-Optic GyroscopeIntegrated three-waveguide directional coupler functions as polarizer and splitter. Designed with transverse electric (TE) polarization in bar state (two coupling lengths) and transverse magnetic (TM) polarization in cross state (one coupling length). Intended for eventual fabrication as in mass-producible integrated optical circuit that provides advantages including low drive voltage, large-bandwidth phase modulation, preservation of polarization in transmission between devices on same substrate, and low cost.
Document ID
19900000143
Acquisition Source
Legacy CDMS
Document Type
Other - NASA Tech Brief
Authors
Depaula, Ramon P. (Caltech)
Bogert, Gail A. (AT&T Bell Laboratories)
Minford, William J. (AT&T Bell Laboratories)
Date Acquired
August 14, 2013
Publication Date
April 1, 1990
Publication Information
Publication: NASA Tech Briefs
Volume: 14
Issue: 4
ISSN: 0145-319X
Subject Category
Electronic Components And Circuits
Report/Patent Number
NPO-17515
Accession Number
90B10143
Distribution Limits
Public
Copyright
Work of the US Gov. Public Use Permitted.

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