TY - JOUR
T1 - Effect of input-output coupling on the sensitivity of coupled resonator optical waveguide gyroscopes
AU - Kalantarov, Dmitriy
AU - Search, Christopher P.
PY - 2013/2
Y1 - 2013/2
N2 - 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.
AB - 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.
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U2 - 10.1364/JOSAB.30.000377
DO - 10.1364/JOSAB.30.000377
M3 - Article
AN - SCOPUS:84874399163
SN - 0740-3224
VL - 30
SP - 377
EP - 381
JO - Journal of the Optical Society of America B: Optical Physics
JF - Journal of the Optical Society of America B: Optical Physics
IS - 2
ER -