volume | PIER Journals

Abstract

The broadband wavelength conversion based on four-wave mixing in a silicon nanowire waveguide is theoretically investigated by taking into account the influence of the waveguide loss and free-carrier absorption on the phase-matched condition. The lossy wavelength conversion is compared with the lossless one in terms of conversion efficiency and bandwidth. The size of the silicon-oninsulator nanowire waveguide is optimized to be 400nm × 269nm for broadband wavelength conversion by realizing a flattened dispersion. The pump wavelength is also optimized to 1538.7nm in order to further enhance the conversion bandwidth. A 3-dB conversion bandwidth of over 280nm is achieved in the optimized waveguide with the optimized pump wavelength.

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Dr. Xingzhi Zhang

Professor Shiming Gao

Prof. Sailing He