New type of multimode-interference-type thermo-optic variable optical attenuator

被引：11
|
作者：
Yang, L [1 ]
Xin, HL [1 ]
Fang, C [1 ]
Wang, CX [1 ]
Li, F [1 ]
Li, ZM [1 ]
Liu, YL [1 ]
Wang, QM [1 ]
机构：
[1] Chinese Acad Sci, Inst Semicond, State Key Lab Integrated Optoelect, Beijing 100083, Peoples R China
来源：
OPTICAL ENGINEERING | 2004年 / 43卷 / 11期
基金：
中国国家自然科学基金;
关键词：
variable optical attenuators; SOI waveguides; multimode-interference couplers; thermo-optic effects; transmission spectra; static response; dynamic response;
D O I：
10.1117/1.1804391
中图分类号：
O43 [光学];
学科分类号：
070207 ; 0803 ;
摘要：
A thermo-optic variable optical attenuator (VOA) based on a Mach-Zehnder interferometer and multimode-interference coupler is fabricated. Not a single-mode but a multimode waveguide is used as the input and output structures of the optical field, which greatly reduces the coupling loss of the VOA with a normal single-mode fiber. The insertion loss of the fabricated VOA is 2.52 to 2.82 dB at the wavelength of 1520 to 1570 nm. The polarization dependent loss is 0.28 to 0.45 dB at the same wavelength range. Its maximum attenuation range is up to 26.3 dB when its power consumption is 369 mW. The response frequency of the fabricated VOA is about 10 kHz. (C) 2004 Society of Photo-Optical Instrumentation Engineers.
引用
收藏
页码：2497 / 2498
页数：2
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