Design and evaluation of an N:N optical coupler using an integrated waveguide mirror

Yutaka Shibata, Takanori Suzuki, Hiroyuki Tsuda

Research output: Contribution to journalArticlepeer-review

7 Citations (Scopus)

Abstract

We proposed and fabricated an N:N optical coupler using an integrated waveguide mirror. Optical circuits can be miniaturized with small bending by reflecting mirrors. The parabolic curve was applied to the mirror shape because it was necessary to collimate the reflected beam so as to distribute the input light to the output waveguides. We fabricated the 8:8 optical coupler using silica waveguide. The chip size was about 7 mm × 15 mm. The excess loss of the device was about 8 dB larger than simulation results calculated using beam propagation method. The dependence on the wavelength and polarization was about 0.4 and 0.15 dB, respectively. The excess loss was mainly attributed to the mirror tilt and will be reduced by optimizing the etching conditions to decrease the mirror tilt angle.

Original languageEnglish
Pages (from-to)182-187
Number of pages6
JournalOptical Review
Volume11
Issue number3
DOIs
Publication statusPublished - 2004 May

Keywords

  • Collimating beam
  • Mirror
  • Optical coupler
  • Optical waveguide
  • Reflection
  • Silica waveguide

ASJC Scopus subject areas

  • Atomic and Molecular Physics, and Optics

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