Beam steering type of 1: 4 optical switch using thermo-optic effect

Kenichi Masuda, Atsushi Tate, Mariko Ishida, Takanori Suzuki, Hiroyuki Tsuda

Research output: Contribution to journalArticle

3 Citations (Scopus)


We propose a beam steering type optical switch employing a phase shifter. It consists of collimating waveguide mirrors, an arrayed-waveguide which has deep trenches incorporating polymer materials, and input/output waveguides. The incident light is guided to the front mirror, where it is then collimated, and input to the arrayed waveguide. The number of trenches filled with polymer linearly increases in order. The refractive index of the polymer can be controlled with temperature, and the propagation direction of the output light from the arrayed waveguide can also be controlled. A switch with 15 waveguides in the array has been fabricated. The chip size is about 2:5 × 9:0 mm 2, the insertion loss is 10 dB, and the extinction ratio is about 10-13 dB.

Original languageEnglish
Pages (from-to)184-188
Number of pages5
JournalOptical Review
Issue number4
Publication statusPublished - 2006 Jul 1



  • Beam steering
  • Optical switch
  • Optical waveguide
  • Phase shifter
  • Thermo-optic effect

ASJC Scopus subject areas

  • Atomic and Molecular Physics, and Optics

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