Interferometric optical gyroscope based on an integrated silica waveguide coil with low loss
Danni Liu, Hui Li, Xiao Wang, Huilan Liu, Peiren Ni, Ning Liu, Lishuang Feng
Abstract
An interferometric optical gyro (IOG) based on integrated devices are a promising alternative for miniaturized inertial sensors. However, improving their accuracy, which is determined by the sensing coil insertion loss, is crucial. In this work, an IOG is built using an integrated sensing coil produced from a 2.14-m-long SiO 2 waveguide, the minimum bend radius and spacing of which are chosen to minimize the sensing coil insertion loss. The coil length is chosen by considering optimal detection limit constraints. Sinusoidal wave biasing modulation improves the system detection sensitivity. Finally, the IOG realizes the best yet reported bias drift of 7.32°/h.
Topics & Concepts
GyroscopeInterferometryOpticsElectromagnetic coilSensitivity (control systems)Insertion lossWaveguideMaterials scienceOptical fiberFibre optic gyroscopeOptoelectronicsPhysicsElectronic engineeringEngineeringQuantum mechanicsAdvanced Fiber Optic SensorsPhotonic and Optical DevicesMechanical and Optical Resonators