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

Daiki Tanaka, Yuichiro Ikuma, Hiroyuki Tsuda

Research output: Contribution to journalArticlepeer-review

15 Citations (Scopus)

Abstract

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.

Original languageEnglish
Pages (from-to)407-411
Number of pages5
JournalIEICE Electronics Express
Volume6
Issue number7
DOIs
Publication statusPublished - 2009 Apr 10

Keywords

  • Crossing
  • Optical circuit
  • Si wire waveguide

ASJC Scopus subject areas

  • Electronic, Optical and Magnetic Materials
  • Condensed Matter Physics
  • Electrical and Electronic Engineering

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