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Proceedings Paper

Single-polarization fiber optic resonator for gyro applications
Author(s): Robert P. Dahlgren; Robert E. Sutherland
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Paper Abstract

A novel fiber-optic resonant ring has been demonstrated that eliminates one of the orthogonal resonances in the cavity. Standard birefringent fiber resonators support two resonances, associated with the fast and slow eigenmodes of the resonator. The addition of an intercavity device increases the loss in one of the eigenmodes, thus squelching that resonance. We have fabricated resonant rings from birefringent fiber polished couplers with a length of polarizing fiber spliced into the cavity, which eliminates the orthogonal resonance, even for moderate amounts of subcomponent polarization cross-coupling. Resonators with deep, symmetric dips and with finesse of about 25 have been obtained, fabricated from adjustable and fixed polarization-maintaining couplers.

Paper Details

Date Published: 1 February 1992
PDF: 8 pages
Proc. SPIE 1585, Fiber Optic Gyros: 15th Anniversary Conf, (1 February 1992); doi: 10.1117/12.135041
Show Author Affiliations
Robert P. Dahlgren, Charles Stark Draper Lab., Inc. (United States)
Robert E. Sutherland, Charles Stark Draper Lab., Inc. (United States)

Published in SPIE Proceedings Vol. 1585:
Fiber Optic Gyros: 15th Anniversary Conf

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