fibre optic gyroscope using a hybrid optical path with low polarization and the polarization of radiation

摘要

fibre optic gyroscope using a hybrid optical path with low polarization and polarization maintaining optical measuring instruments contains the u043bu043eu0432u043au0443 and node signal processing circuitthe optical measuring head includes a light source, u0438u043du0442u0435u0433u0440u0430u043bu044cu043du0443u044e multi-functional optical circuit board, and the coil of the detector u043eu0442u0432u0435u0442u0432u0438u0442u0435u043bu044c opt u0438u0447u0435u0441u043au043eu0433u043e fibersthe light source is a light source with low polarization optical fiber with single - and u043eu0442u0432u0435u0442u0432u0438u0442u0435u043bu044c u043fu0438u0433u0442u0435u0439u043bu043eu043c; at the entrance of the hundreds of u043eu0444u0443u043du043au0446u0438u043eu043du0430u043bu044cu043du043eu0439 optical integralchips is used u043eu0434u043du043eu043cu043eu0434u043eu0432u043eu0435 fiber and the output optical fiber multifunctional integral circuits is used.which preserves the polarization; the front is u043fu0438u0433u0442u0435u0439u043b the detector represents the u043eu0434u043du043eu043cu043eu0434u043eu0432u043eu0435 fiber; u043eu0442u0432u0435u0442u0432u0438u0442u0435u043bu044c represents u043fu043eu043bu044fu0440u0438u0437u0430 u0446u0438u043eu043du043du043e independent u043eu0442u0432u0435u0442u0432u0438u0442u0435u043bu044c u043eu0434u043du043eu043cu043eu0434u043eu0432u043ethe 2x2 optical fiber coil of the fiber, is a fiber which maintains the polarization.by adopting the scheme of hybrid optical path with low polarization and the polarization and the methods of signal processing.such as full digital management of a cycle and the random field measurements are off scale and so on.this invention can reduce the influence of cross polarization interference optical path, simplifying the technology buildsto make possible mass production and guarantee the large-scale the high linearity and low noise levels.in addition, by setting the temperature model and the compensation temperature impacts the invention makes