Silicon-on-insulator-based optical demultiplexer employing turning-mirror-integrated arrayed-waveguide grating

• Published in: IEEE photonics technology letters 2005-02, Vol.17 (2), p.378-380
• Main Authors: Kemiao Jia, Kemiao Jia, Wenhui Wang, Wenhui Wang, Yanzhe Tang, Yanzhe Tang, Yirong Yang, Yirong Yang, Jianyi Yang, Jianyi Yang, Xiaoqing Jiang, Xiaoqing Jiang, Yaming Wu, Yaming Wu, Minghua Wang, Minghua Wang, Yuelin Wang, Yuelin Wang
• Format: Article
• Language: English
• Subjects: Arrayed waveguide gratings; Arrayed-waveguide grating (AWG); Arrays; Demultiplexers; Diffraction gratings; Gratings (spectra); Integrated optics; mirror; Mirrors; Noise levels; Nonuniformity; Optical arrays; Optical crosstalk; optical demultiplexer (Demux); Optical devices; Optical materials; Optical waveguide components; Optical waveguides; Phased arrays; ridge waveguide; silicon-on-insulator (SOI); Waveguides; Wavelengths
• ISSN: 1041-1135; 1941-0174
• DOI: 10.1109/LPT.2004.839394

In this letter, we demonstrate an optical demultiplexer on the silicon-on-insulator material employing the turning-mirror-integrated arrayed-waveguide grating (AWG). We substitute the bent waveguide array in the traditional AWG configuration by adopting the structure of the turning-mirror-integrated straight waveguides. Description of the design procedure is provided. The crosstalk of the fabricated 1/spl times/4 AWG is better than -23.1 dB. The typical on-chip insertion loss is about -8 dB and the output nonuniformity is less than 0.4 dB. The polarization-dependent central wavelength shift is about 0.068 nm.