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Journal of the Optical Society of America B

Journal of the Optical Society of America B

| OPTICAL PHYSICS

  • Editor: Grover Swartzlander
  • Vol. 30, Iss. 2 — Feb. 1, 2013
  • pp: 377–381

Effect of input–output coupling on the sensitivity of coupled resonator optical waveguide gyroscopes

Dmitriy Kalantarov and Christopher P. Search  »View Author Affiliations


JOSA B, Vol. 30, Issue 2, pp. 377-381 (2013)
http://dx.doi.org/10.1364/JOSAB.30.000377


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Abstract

We analyze how the evanescent coupling, κe, between the outermost resonators and input/output waveguides of an N-resonator coupled resonator optical waveguide (CROW) gyroscope affects the transmission and sensitivity to rotations. For constant coupling between resonators κ, rotation sensitivities increase as both κe0 and κe1 while between these two limits the sensitivity has a minimum. In the weak coupling regime, κe0, the sensitivity is enhanced by Fabry–Perot oscillations due to the impedance mismatch at the input/output waveguide–CROW interface, while in the strong coupling regime, κe1, the sensitivity is reduced because the outermost resonators no longer contribute to the CROW transmission. For small N the sensitivity is proportional to N2, while at larger N the sensitivity begins to decrease due to resonator losses.

© 2013 Optical Society of America

OCIS Codes
(060.2800) Fiber optics and optical communications : Gyroscopes
(120.5790) Instrumentation, measurement, and metrology : Sagnac effect
(130.3120) Integrated optics : Integrated optics devices

ToC Category:
Fiber Optics and Optical Communications

History
Original Manuscript: September 27, 2012
Revised Manuscript: December 19, 2012
Manuscript Accepted: December 20, 2012
Published: January 22, 2013

Citation
Dmitriy Kalantarov and Christopher P. Search, "Effect of input–output coupling on the sensitivity of coupled resonator optical waveguide gyroscopes," J. Opt. Soc. Am. B 30, 377-381 (2013)
http://www.opticsinfobase.org/josab/abstract.cfm?URI=josab-30-2-377

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