Ultra-sensitive chip scale Sagnac gyroscope based on periodically modulated coupling of a coupled resonator optical waveguide

Christopher Sorrentino, John R.E. Toland, Christopher P. Search

Research output: Contribution to journalArticlepeer-review

53 Scopus citations

Abstract

We analyze the sensitivity to inertial rotations Ωof a micron scale integrated gyroscope consisting of a coupled resonator optical waveguide (CROW). We show here that by periodic modulation of the evanescent coupling between resonators, the sensitivity to rotations can be enhanced by a factor up to 109 in comparison to a conventional CROW with uniform coupling between resonators. Moreover, the overall shape of the transmission through this CROW superlattice is qualitatively changed resulting in a single sharp transmission resonance located at Ω= 0s-1 instead of a broad transmission band. The modulated coupling therefore allows the CROW gyroscope to operate without phase biasing and with sensitivities suitable for inertial navigation even with the inclusion of resonator losses.

Original languageEnglish
Pages (from-to)354-363
Number of pages10
JournalOptics Express
Volume20
Issue number1
DOIs
StatePublished - 2 Jan 2012

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