Abstract
We propose a low-power variable optical attenuator based on the configuration of a hybrid silicon oxynitride (SiON)-polymer S-bend waveguide and two grooves in both sides of the S-bend waveguide core. With such a configuration, the opposite thermo-optic characteristics of SiON and polymer materials can be fully utilized. As a consequence, the heat utilization efficiency is increased. Theoretical simulation shows that an optical attenuation of can be achieved with an applied electrical power of 3.6 mW. A typical fabricated device, which has a total length of 8 mm, shows a maximum optical attenuation of 46 dB with an applied electrical power of 16.2 mW and an insertion loss of 5.4 dB.
© 2016 Optical Society of America
Full Article | PDF ArticleMore Like This
Qian Qian Song, Kai Xin Chen, Ling Fang Wang, Jia Qi Guo, Shuo Chen, and Tian Xiang Zheng
Appl. Opt. 57(33) 9809-9813 (2018)
Zhiyi Zhang, Gao Zhi Xiao, Ping Zhao, and Chander P. Grover
Appl. Opt. 44(12) 2402-2408 (2005)
Partha P. Sahu
Appl. Opt. 48(21) 4213-4218 (2009)