Design and simulation of a silicon-based hybrid integrated optical gyroscope system

Abstract

Combining silicon-based lithium niobate modulator and silicon-based Si3N4 resonator with silicon-based photonics technology, a highly systematic design of hybrid integrated optical gyroscope with enhanced reciprocity sensitivity and dual micro-ring structure is proposed for the first time in the paper, and the relationship between device’s structural parameters and optical performance is analyzed by constructing a complete simulation link, which provides a theoretical design reference for improving the system sensitivity. When the wavelength is 1550 nm, conversion frequency of the dual-ring optical path is 50 MHz, coupling coefficient is 0.2, and the radius R is 1000 μm, the quality factor of the silicon-based Si3N4 resonator is 2.58×105, which is 1.58 times that of the silicon on insulator resonator. Besides, the effective number of times the light travels around the ring before leaving the micro-ring is 5.93, which is 1.62 times that of the silicon on insulator resonator. The work fits the gyro dynamic output diagram, and solves the problem of low sensitivity at low speed by setting the phase offset. The results provide a basis for the further optimization of design and chip processing of the integrated optical gyroscope.

Quasi-anti-parity–time-symmetric single-resonator micro-optical gyroscope with Kerr nonlinearity

“…Gyroscopes play a crucial role in inertial navigation and guidance systems, particularly in the commercial and military fields. [1] Among these, micro-optical gyroscopes with small ring resonators, including those in chip-based form, are highly promising due to their potential for high precision, low cost, low power consumption and miniaturization. Much attention has been devoted to improving the precision of micro-optical gyroscopes, including noise suppression, [2][3][4] boosting the quality factor of the resonator, [5,6] optimizing the optical structure [7][8][9] and exploring novel signal detection techniques.…”