Polarization dependent guiding in liquid crystal filled photonic crystal fibers

被引：49

作者：

Ren, Guobin ^{[1
]}

Shum, Ping ^{[1
]}

Yu, Xia ^{[1
]}

Hu, JuanJuan ^{[1
]}

Wang, Guanghui ^{[1
]}

Gong, Yandong ^{[2
]}

机构：

[1] Nanyang Technol Univ, Network Technol Res Ctr, Singapore 637553, Singapore

[2] Inst InfoComm Res, Singapore 119613, Singapore

来源：

OPTICS COMMUNICATIONS | 2008年 / 281卷 / 06期

关键词：

fiber optics; photonic bandgap fibers; liquid crystal devices; polarization-maintaining;

D O I：

10.1016/j.optcom.2007.11.084

中图分类号：

O43 [光学];

学科分类号：

070207 ; 0803 ;

摘要：

A theoretical study of nematic liquid crystal filled photonic crystal fibers (LCPCFs) is presented. Detailed investigations including the polarization dependent bandgap formation and the modal properties are given for LCPCFs, in which alignment of the molecules could be controlled by external static electric field. The polarization dependent bandgap splitting caused by the high index difference between the ordinary and the extraordinary dielectric index of nematic liquid crystals provides the possibility of single-mode single-polarization guiding. A polarization operation diagram is proposed to describe the guiding behavior of LCPCFs. The influence of rotation angle 0 of the director of liquid crystals on the modal properties is investigated. It is shown that the polarization axis of the guided mode is determined by the rotation angle phi, which could be controlled by external electric field. (C) 2007 Elsevier B.V. All rights reserved.

引用

页码：1598 / 1606

页数：9

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