Thermooptic switch based on photonic-crystal line-defect waveguides

Tao Chu, Hirohito Yamada, Satomi Ishida, Yasuhiko Arakawa

Research output: Contribution to journalArticlepeer-review

40 Citations (Scopus)


A thermooptic switch with a symmetric Mach-Zehnder interferometer structure was demonstrated with silicon photonic-crystal-slab line-defect waveguides. The device size was as small as 160 × 65 μm. The optic switch operated at a wavelength of 1550 nm, and an extinction ratio greater than 30 dB was obtained by 120-mW heating (switching) power over the wavelength range of 15 nm. The switching ON-OFF response times were about 120 μs.

Original languageEnglish
Pages (from-to)2083-2085
Number of pages3
JournalIEEE Photonics Technology Letters
Issue number10
Publication statusPublished - 2005 Oct


  • Integrated optics
  • Mach-Zehnder (MZ) interferometer
  • Optical switches
  • Photonic crystal (PhC)
  • Photonic switching systems
  • Thermooptic effects


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