Temperature Features Of Reflection-induced Retardence And Splitting Ratio Of A NPBS And The Effects On An OCRCS

The temperature features of the reflection-induced retardance and splitting ratio of a NPBS (Non-Polarizing Beam Splitter) are investigated, their influences on the output stability of OCRCS (Orthoconjugate Reflector Current Sensor) are analyzed, and corresponding temperature compensation techniques are discussed.The temperature features of the reflection-induced retardance and splitting ratio of NPBS are theoretically analyzed based on the principles of Polarization Optical. The method to measure the temperature features of the reflection-induced retardance and splitting ratio of a NPBS is designed and verified theoretically and experimentally. The schemes on measuring the temperature features of the reflection-induced retardance and splitting ratio are proposed. The influences of the temperature features of the reflection-induced retardance and splitting ratio on the stability of the output of an OCRCS and the corresponding temperature compensation effects are simulated. The result shows that when temperature varies in a range from 5℃to 40℃, only the splitting ratio has influences on the stability of the output. Temperature compensation of scale factor could eliminate this effect, and thus strengthen the stability of the system. Actual experimental results and quantitative simulation analysis on these results prove the correctness of the method and its feasibility.