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

Dmitriy Kalantarov, Christopher P. Search

Research output: Contribution to journalArticlepeer-review

34 Scopus citations

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 κe → 0 and κe → 1 while between these two limits the sensitivity has a minimum. In the weak coupling regime, κe → 0, 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, κe → 1, 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.

Original languageEnglish
Pages (from-to)377-381
Number of pages5
JournalJournal of the Optical Society of America B: Optical Physics
Volume30
Issue number2
DOIs
StatePublished - Feb 2013

Fingerprint

Dive into the research topics of 'Effect of input-output coupling on the sensitivity of coupled resonator optical waveguide gyroscopes'. Together they form a unique fingerprint.

Cite this