计量学报2024，Vol.45Issue(4)：503-507,5.DOI:10.3969/j.issn.1000-1158.2024.04.06
检偏器对轴角度误差对光纤环偏振耦合测量的影响研究
Investigation on the Influence of Alignment Angle Error of the Polarization Analyzer on Polarization Coupling easurement of Fiber Coil
摘要
Abstract
To investigate the influence of the alignment angle error between the polarization axis of polarization analyzer and the fiber polarization axis on the measurement results of the polarization coupling intensity of the fiber coil,the basic principle of using optical coherence domain polarization detection(OCDP)technology to test the polarization coupling intensity of the fiber coil is theoretically analyzed,and the relationship model between the coupling intensity of the polarization coupling point in the fiber coil and the alignment angle of the polarization analyzer is established.According to the relationship model,the variation of the measured value of polarization coupling intensity at the coupling point with the alignment angle of the polarization analyzer is simulated and analyzed.The simulation results show that the measurement error reaches minimum when the alignment angle between the polarization axis of the polarizer and the polarization axis of the fiber coil is 45°.The more the alignment angle deviates from 45°,the greater the intensity measurement error will be.When the alignment angle error between the polarization axis of the polarization analyzer and the polarization axis of the fiber coil is 0.6°,the measurement error of the polarization coupling intensity caused by the alignment angle error is 0.18 dB.The measurement error of polarization coupling intensity caused by the error of polarization axis to axis can be less than 1 dB by controlling the error of alignment angle within 3°.关键词
光学计量/保偏光纤环/偏振耦合强度/对轴角度误差/检偏器/光相干域偏振检测技术Key words
optical metrology/polarization-maintaining fiber coil/polarization coupling intensity/alignment angle error/analyzer/OCDP分类
通用工业技术引用本文复制引用
王学勤,曹志峰,梁兰菊..检偏器对轴角度误差对光纤环偏振耦合测量的影响研究[J].计量学报,2024,45(4):503-507,5.基金项目
山东省高等学校"青创科技计划"(2019KJN001) （2019KJN001）
枣庄学院博士启动项目(1020710) （1020710）
