Anomalous localization modes in Bragg-grating based on high index-difference waveguide

Tomohiro Kita, Koji Uchijima, Hirohito Yamada

Research output: Chapter in Book/Report/Conference proceedingConference contribution


We observed photonic band-gap disappearance on Bragg-grating wavelength filters with Si photonic-wire waveguides, and studied the physical mechanism with theoretical and numerical analyses. This is a unique phenomenon observed in channel waveguides with very high index-contrast between the waveguide core and cladding materials. The photonic band-gap disappearance was observed in structures where two different optical field distributions of standing wave degenerate.

Original languageEnglish
Title of host publicationSilicon Photonics VIII
Publication statusPublished - 2013
Externally publishedYes
EventSilicon Photonics VIII - San Francisco, CA, United States
Duration: 2013 Feb 42013 Feb 6

Publication series

NameProceedings of SPIE - The International Society for Optical Engineering
ISSN (Print)0277-786X


OtherSilicon Photonics VIII
Country/TerritoryUnited States
CitySan Francisco, CA


  • Bragg grating
  • Photonic band gap
  • Si photonics
  • Waveguide

ASJC Scopus subject areas

  • Electronic, Optical and Magnetic Materials
  • Condensed Matter Physics
  • Computer Science Applications
  • Applied Mathematics
  • Electrical and Electronic Engineering


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