Phase error compensation for multilayered AWG in LCOS-based WSS

Keisuke Sorimoto, Kenji Kintaka, Hitoshi Kawashima, Masahiko Mori, Toshifumi Hasama, Hiroshi Ishikawa, Hiroyuki Tsuda, Hisato Uetsuka

Research output: Contribution to journalArticlepeer-review

2 Citations (Scopus)


We propose a novel method to compensate for the phase errors of a multilayered arrayed waveguide grating (AWG) used in a liquid-crystal-on-silicon (LCOS)-based wavelength selective switch (WSS). In this scheme, an additional LCOS is employed to externally compensate for the phase errors of the AWG in a layer-by-layer manner for both planes of polarization. This compensation scheme enables us to improve the yield of the WSS: specifically, we demonstrate that the additional LCOS drastically reduces the loss and polarizationdependent loss (PDL) of the WSS.

Original languageEnglish
Pages (from-to)2054-2060
Number of pages7
JournalIEICE Electronics Express
Issue number24
Publication statusPublished - 2011 Dec 25


  • Arrayed waveguide grating
  • Liquid crystal on silicon
  • Multilayered waveguide
  • Phase error compensation
  • Wavelength selective switch

ASJC Scopus subject areas

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


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