Chuang Wei-Ching, Lee An-Chen, Chao Ching-Kong, Ho Chi-Ting
Department of Electro-Optics Engineering, National Formosa University, Huwei, Yulin, Taiwan.
Opt Express. 2009 Sep 28;17(20):18003-13. doi: 10.1364/OE.17.018003.
In this work, we successfully developed a process to fabricate dual-channel polymeric waveguide filters based on an asymmetric Bragg coupler (ABC) using holographic interference techniques, soft lithography, and micro molding. At the cross- and self-reflection Bragg wavelengths, the transmission dips of approximately -16.4 and -11.5 dB relative to the 3 dB background insertion loss and the 3 dB transmission bandwidths of approximately 0.6 and 0.5 nm were obtained from an ABC-based filter. The transmission spectrum overlaps when the effective index difference between two single waveguides is less than 0.002.
在这项工作中，我们成功开发了一种基于非对称布拉格耦合器（ABC）制造双通道聚合物波导滤波器的工艺，该工艺采用了全息干涉技术、软光刻技术和微成型技术。在交叉反射和自反射布拉格波长处，基于ABC的滤波器相对于3dB背景插入损耗的传输凹陷约为-16.4dB和-11.5dB，3dB传输带宽约为0.6nm和0.5nm。当两个单波导之间的有效折射率差小于0.002时，传输光谱会重叠。
