OE Letters

Influence of thermal isolating grooves on the performance of the Mach-Zehnder interferometer-type thermo-optic variable optical attenuator

[+] Author Affiliations
Yuejiao He, Lin Yang, Qing Fang, Hongli Xin, Fang Li, Yuliang Liu

Chinese Academy of Sciences, Institute of Semiconductors, Research and Development Center of Optoelectronics, Beijing, 100083 E-mail: yjhe@red.semi.ac.cn

Opt. Eng. 44(4), 040504 (Mar. 30, 2005). doi:10.1117/1.1885511
History: Received Oct. 8, 2004; Revised Jan. 19, 2005; Accepted Feb. 4, 2005; Mar. 30, 2005; Online March 30, 2005
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Two types of silicon-on-insulator thermo-optic variable optical attenuators (VOAs) based on a Mach-Zehnder interferometer and a multimode-interference coupler are fabricated, one with thermal isolating grooves to improve heating efficiency and the other without. Comparison of optical and electrical properties, such as insertion losses, the maximum attenuation levels and the corresponding power consumptions, and the response times, is carried out between the two types of VOAs. The comparison results indicate that use of thermal isolating grooves leads to better values for most characteristics and is an effective way to improve the performance of Mach-Zehnder interferometer-type thermo-optic devices. © 2005 Society of Photo-Optical Instrumentation Engineers.

© 2005 Society of Photo-Optical Instrumentation Engineers

Citation

Yuejiao He ; Lin Yang ; Qing Fang ; Hongli Xin ; Fang Li, et al.
"Influence of thermal isolating grooves on the performance of the Mach-Zehnder interferometer-type thermo-optic variable optical attenuator", Opt. Eng. 44(4), 040504 (Mar. 30, 2005). ; http://dx.doi.org/10.1117/1.1885511


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