Optimal design of optical waveguide resonator for MOG

An optimized resonator was proposed to ensure remaining the MOG (Micro-Optical Gyroscope) characteristics of high temperature stability and miniaturization. The resonator loss was less than 0. 5 dB by using the SiO ₂ on Silicon substrate whose transmission loss is 0. 01 dB/cm. The finesse of the resonator was ensured. The structure of quasi-single mode waveguide can transmit fundamental mode and first-order mode. Curve waveguide filtered first-order mode so that only the fundamental mode transmitted in the resonator. Analysis is made to the influence of waveguide's transmission lose and coupler's coupling ratio on the resonator finesse and IOG fundamental detection limit The resonator finesse is above 60 after optimized design of coupler. And the fundamental detection limit is about 1. 6°/h on condition that laser line-width is 30 kHz, detector responsibility is 0. 95A/W and integral time is 10s. Finally,this method was validated effectively and practically by experimentation.