The novel stable control scheme of the light source power in the closed-loop fiber optic gyroscope
Institute of Optics and Precision Mechanics of the Chinese Academy of Sciences, NO. 17 Xinxi Road, New Industrial Park, Xian Hi-Tech Industrial Development Zone, Xian, Shaanxi, P.R.China;Caiwen Ma@ Xian Institute of Optics and Precision Mechanics of the Chinese Academy of Sciences, NO. 17 Xinxi Road, New Industrial Park, Xian Hi-Tech Industrial Development Zone, Xian, Shaanxi, P.R.China The light source power stability of the Fiber-Optic Gyroscope (FOG) affects directly the scale factor and bias stability of FOG. The typical control scheme of the light source power employs an additional photodetector to detect the output power of the light source. When the fiber loss of FOG varied due to the temperature change, the light power in the additional photodetector did not indicate this change, which decreased the control effect. The spike pulse overlapping on the gyro signal denotes potentially the change of the light power and fiber loss. In the novel scheme, the spike pulse is extracted from the gyro signal, and is transformed into the square wave by the differential circuit. According to the change of the square wave amplitude, FOG adjusts the bias current of the light source to keep the stable light power in the signal photodetector. It is a simple and low-cost scheme without an additional photodetector.
Zhongxiao Ji Caiwen Ma
Xian Institute of Optics and Precision Mechanics of the Chinese Academy of Sciences, NO. 17 Xinxi R Xian Institute of Optics and Precision Mechanics of the Chinese Academy of Sciences, NO. 17 Xinxi R
国际会议
3rd International Photonics & OptoElectronics Meetings(第三届国际光子与光电子学会议 POEM 2010)
武汉
英文
1-5
2010-11-03（万方平台首次上网日期，不代表论文的发表时间）