Low coherence fiber optic gyroscope system research
|School||Harbin Engineering University|
|Keywords||Interferometric Fiber Optic Gyro : Wide spectrum of light Young intervention : CCD detector|
Interferometric Fiber Optic Gyroscope (IFOG) has many unique advantages , which caused a large number of research institutions world 's attention , as our country has fiber optic gyro inertial technology focus on the development of key technologies . And , the low-precision FOG research more market prospects, will bring radical innovation to society . Paper introduces the principle of interferometric fiber optic gyroscope and a wide spectral interference technology, from fiber optic gyroscope , low accuracy requirements, design a set of low-coherence fiber optic gyro solutions , overcome by the light frequency, power instability and polarization direction measurement error , with good job stability and repeatability. In order to improve measurement sensitivity has taken more wide- spectrum light source technology has been demonstrated and simulation to get good results , and for the low-coherence interferometric open loop fiber optic gyroscope system gives a detailed circuit design ideas, as well as bring CCD detector the error took deconvolution approach to the elimination . Meanwhile , a detailed analysis is generated IFOG nonreciprocal phase shift ( optical path difference ) of the factors that the corresponding error elimination methods to overcome . This is useful for the development of the low-precision fiber optic gyroscope is important.