Article ID | Journal | Published Year | Pages | File Type |
---|---|---|---|---|
1533834 | Optics Communications | 2016 | 7 Pages |
Abstract
Finite retardation ranges of linear retarders with fixed axes limit their applications in polarization control. In this work, we present a simple and efficient constraint scheme for this finite-retardation limitation. Its theoretical basis is given geometrically and mathematically. The new polarization control algorithm combines the constraint scheme and a widely-used maximum-search algorithm. Both simulations and experiments confirm the effectiveness and practicality of the proposed scheme and control algorithm. In experiments, the control system uses four cascaded linear retarders with fast axes alternately oriented at 0° and 45°. Each retarder (fiber squeezer) has a finite retardation range of 4Ï. For a 15-min test, the mean (maximum) polarization error angle is 0.09 (0.28) rad while stabilizing a polarization fluctuation at an average speed of 26 rad/s. Furthermore, no events of hitting retardation limits occur.
Keywords
Related Topics
Physical Sciences and Engineering
Materials Science
Electronic, Optical and Magnetic Materials
Authors
Hua Chen, Mo Li, Wen-Ye Liang, Dong Wang, De-Yong He, Shuang Wang, Zhen-Qiang Yin, Wei Chen, Guang-Can Guo, Zheng-Fu Han,