中国激光, 1997, 24 (6): 563, 网络出版: 2006-10-31
入射偏振态偏离TE模对光纤AM CATV外调制发射机性能影响的研究
Influence of the Incident Polarization State Drifting off TE Mode on Performance of the Optical Fiber AM CATV Externally Modulated Transmitter
摘要
从理论上分析了入射到调制器的偏振态偏离TE模时对外调制光发射机组合二次失真(CSO)和组合三次差拍(CTB)的影响。得出在TE,TM模插入损耗相同时,传输59个PAL-D频道,在保证CSO=-70dBc时,偏离TE模的角度应小于6°。单频传输的实验结果和理论分析一致。
Abstract
Influence of the incident polarization state drifting off TE mode on composite second order distortion (CSO) and composite triple beat distortion (CTB) of an optical fiber AM CATV externally modulated transmitter is analysed theoretically. The conclusion is that if the insertion losses of the TE mode and TM mode are same and 59 PAL D channels are transmitted, the deviation angle from the TE mode should be less than 6 degrees with CSO=-70 dBc. The result of a single channel transmission experiment is consisistent with the theoretical analysis.
蒋洪涛, 查开德, 李德杰. 入射偏振态偏离TE模对光纤AM CATV外调制发射机性能影响的研究[J]. 中国激光, 1997, 24(6): 563. 蒋洪涛, 查开德, 李德杰. Influence of the Incident Polarization State Drifting off TE Mode on Performance of the Optical Fiber AM CATV Externally Modulated Transmitter[J]. Chinese Journal of Lasers, 1997, 24(6): 563.
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