【作者】 王政平； 黄宗军； 史金辉；

【Author】 WANG Zhengping HUANG Zongjun SHI Jinhui(Science School, Harbin Engineering University, Harbin 150001)

【机构】 哈尔滨工程大学理学院；

【摘要】 利用理论分析和计算机仿真的方法研究了块状玻璃光学电流互感器传感头的色散特性及其对系统灵敏度的影响,并进行了实验验证。研究结果表明,由于光源的驱动电流发生变化,或者光源所处的环境温度发生变化所造成的光束峰值波长移动,会由于保偏反射膜的反射相移,光学玻璃的Verdet常数,以及光学玻璃残余内应力导致的线性双折射折这三个方面的色散特性而对保偏膜式块状玻璃光学电流互感器输出曲线的尺度因子造成明显影响。因此,光源的恒温控制与光源驱动电流的恒流控制是必要的。更多还原

【Abstract】 The dispersion property of the optical glass sensing head and its effect upon the sensitivity of an bulk-glass optical current transformer is theoretically analyzed, simulated with a computer, and verified with an experiment. The investigation results show that the dispersions, which are caused by the reflection-induced retardance of the polarization-protected reflection film, by the Verdet constant of optical glass and by the linear birefringence, will obviously affect the scale factor of the system, because of the change of the driving current, or the movement of peak wave length caused by the change of the source’s environment temperature. Therefore, it is necessary to stabilize the driving current and the ambient temperature of the optical source by some technical means.更多还原