The 650-nm variable optical attenuator based on polymer/silica hybrid waveguide  

作　　者：于跃洋 孙小强 姬兰婷 何国冰 王希斌 衣云骥 陈长鸣 王菲 张大明 

机构地区：[1]State Key Laboratory on Integrated Optoelectronics, College of Electronic Science & Engineering,Jilin University [2]Jilin Provincial Engineering Laboratory on Polymer Planar Lightwave Circuit

出　　处：《Chinese Physics B》2016年第5期164-171,共8页中国物理B（英文版）

基　　金：Project supported by the National Natural Science Foundation of China(Grant Nos.61205032,61475061,61405070,61177027,61275033,and 61261130586);the Science and Technology Development Plan of Jilin Province,China(Grant No.20140519006JH)

摘　　要：Visible light variable optical attenuators（VOA） are essential devices in the application of channel power regulation and equalization in wavelength-division multiplexing cross-connect nodes in plastic optical fiber（POF） transmission systems.In this paper, a polymer/silica hybrid waveguide thermo–optic attenuator based on multimode interference（MMI） coupler is designed and fabricated to operate at 650 nm. The single-mode transmission condition, MMI coupler, and transition taper dimensions are optimized through the beam propagation method. Thermal analysis based on material properties provides the optimized heater placement angle. The fabricated VOA presents an attenuation of 26.5 dB with a 21-mW electrical input power at 650 nm. The rise time and fall time are 51.99 and 192 μs, respectively. The time–stability measurement results prove its working reliability.Visible light variable optical attenuators（VOA） are essential devices in the application of channel power regulation and equalization in wavelength-division multiplexing cross-connect nodes in plastic optical fiber（POF） transmission systems.In this paper, a polymer/silica hybrid waveguide thermo–optic attenuator based on multimode interference（MMI） coupler is designed and fabricated to operate at 650 nm. The single-mode transmission condition, MMI coupler, and transition taper dimensions are optimized through the beam propagation method. Thermal analysis based on material properties provides the optimized heater placement angle. The fabricated VOA presents an attenuation of 26.5 dB with a 21-mW electrical input power at 650 nm. The rise time and fall time are 51.99 and 192 μs, respectively. The time–stability measurement results prove its working reliability.

关 键 词：variable optical attenuator thermo–optic attenuator multimode interference POLYMER 

分 类 号：TN715[电子电信—电路与系统]