光学学报, 2007, 27 (7): 1279, 网络出版: 2007-08-17   

与偏振无关的双向3×3光开关结构设计

Polarization-Independent Bidirectional 3×3 Optical Switch
作者单位
四川大学电子信息学院光电科学技术系, 成都 610064
摘要
利用传统成熟的偏振控制技术,设计了一种由偏振光分束器、相位型空间光调制器、反射镜和四分之一波片构成的3×3光开关。该光开关具有结构紧凑规整、功能的实现与信号光的偏振态无关以及可以完成双向交换等特点。根据其路由控制表对该3×3光开关交换模块功能的实现进行了分析,结果表明,通过对各相位型空间光调制器状态的调整,控制通过其信号光的偏振态,完成信号光的路由,该交换模块可以完成输入信号光的全排列无阻塞输出与交换。同时,该交换模块具有一定的扩容和重构能力,对于构建大规模的交换矩阵具有一定的作用。
Abstract
Based on the conventional polarization-control technology, a novel 3×3 optical switch, consisting of phase spatial light modulator (PSLM), polarizing beam splitter, mirror, and quarter-wave plate, is proposed. This new configuration of the optical switch grants the features of compact in structure, efficient in performance, and insensitive to polarization of signal beam. In addition, the functions of 3×3 optical switch are implemented bi-directionally in free-space. According to the routing state table of polarization-independent 3×3 optical switch, its operational process is analyzed. By modulating PSLMs and controlling the polarization state of signal, the signal routing is realized, and the switching module of 3×3 optical switch can realize arbitrary port output and exchange for any port input beams without routing conflict. The module has the capability of expansion and reconfiguration. Therefore, it is helpful in the design of large-scale switch matrix.
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杨俊波, 苏显渝. 与偏振无关的双向3×3光开关结构设计[J]. 光学学报, 2007, 27(7): 1279. 杨俊波, 苏显渝. Polarization-Independent Bidirectional 3×3 Optical Switch[J]. Acta Optica Sinica, 2007, 27(7): 1279.

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