Low loss, small crosstalk offset crossing structure for large-scale planar lightwave circuits

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概要

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• A low loss, small crosstalk offset crossing structure for a Si wire waveguide is proposed. We analyzed the properties of the structure for both the TE and TM modes by 2-D FDTD (two-dimensional finite difference time domain) simulation. By optimizing the offset crossing structure, a transmission loss of 0.021dB, and crosstalk of -55.0dB was achieved with a crossing angle of 20 degrees for the TE mode. A transmission loss of 0.070dB, and crosstalk of -48.6dB was also achieved with the same crossing angle for the TM mode. The low losses achieved with a small crossing angle makes this structure very useful for highly integrated optical matrix switches, etc.

• （社）電子情報通信学会の論文

著者

• TSUDA Hiroyuki

  School of Integrated Design Engineering, Graduate School of Science and Technology, Keio University

• Tanaka Daiki

  School Of Integrated Design Engineering Graduate School Of Sci. And Technol. Keio Univ.

• Ikuma Yuichiro

  School of Integrated DESIGN Engineering, Graduate School of Science and Technology, Keio University

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