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 language | English |
|---|---|
| Pages (from-to) | 377-381 |
| Number of pages | 5 |
| Journal | Journal of the Optical Society of America B: Optical Physics |
| Volume | 30 |
| Issue number | 2 |
| DOIs | |
| State | Published - Feb 2013 |
ASJC Scopus subject areas
- Statistical and Nonlinear Physics
- Atomic and Molecular Physics, and Optics