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

Christopher Sorrentino | Zendy; John R. E. Toland | Zendy; Christopher P. Search | Zendy

Open Access

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

Author(s) -

Christopher Sorrentino,

John R. E. Toland,

Christopher P. Search

Publication year - 2011

Publication title -

optics express

Language(s) - English

Resource type - Journals

SCImago Journal Rank - 1.394

H-Index - 271

ISSN - 1094-4087

DOI - 10.1364/oe.20.000354

Subject(s) - resonator , gyroscope , sagnac effect , optics , coupling (piping) , physics , waveguide , sensitivity (control systems) , fibre optic gyroscope , resonance (particle physics) , transmission (telecommunications) , scale factor (cosmology) , modulation (music) , optoelectronics , materials science , optical fiber , acoustics , telecommunications , electronic engineering , particle physics , quantum mechanics , computer science , metallurgy , engineering , cosmology , metric expansion of space , dark energy

We analyze the sensitivity to inertial rotations Ω of 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 10(9) 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.

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