Experimental study on the performance of a variable optical attenuator using polymer dispersed liquid crystal

被引：11
|
作者：
Nabil, Ghada [1 ]
Ho, Wing Fat [1 ]
Chan, Hau Ping [1 ]
机构：
[1] City Univ Hong Kong, Dept Elect Engn, Kowloon Tong, Hong Kong, Peoples R China
来源：
APPLIED OPTICS | 2013年 / 52卷 / 22期
关键词：
WAVE-GUIDES; SILICON; RESONATORS;
D O I：
10.1364/AO.52.000E15
中图分类号：
O43 [光学];
学科分类号：
070207 ; 0803 ;
摘要：
We applied polymer dispersed liquid crystal (PDLC) as the cladding material in a polymer-based variable optical attenuator. Three polymer inverted channel waveguides were fabricated, two with PDLC upper cladding (aligned PDLC and nonaligned PDLC) and one with aligned liquid crystal upper cladding. Upon operation, the waveguides with aligned upper claddings show relatively lower threshold and cutoff voltages compared to those with nonaligned PDLC cladding. But the waveguide with nonaligned PDLC upper cladding shows lower polarization dependence and a higher attenuation range of 39 and 41.37 dB for TM and TE modes, respectively, over a tuning field strength of 0.9 V/mu m. (C) 2013 Optical Society of America
引用
收藏
页码：E15 / E21
页数：7
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