High-extinction-ratio Si optical modulator loaded with integrated polarizer

Hiroki Kojima, Junichi Fujikata, Tomohiro Kita*

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review


We propose a carrier-depletion type Si optical modulator for transverse electric (TE) polarization loaded with an integrated polarizer. The integrated TE-pass polarizer with a bent waveguide has a compact and simple structure and demonstrate a polarization extinction ratio of 41.3 dB and insertion loss of 0.67 dB. This Si optical modulator loaded with the integrated polarizer achieved a maximum extinction ratio of 54.5 dB. It is expected to have a wide range of applications in digital coherent optical communication and optical sensing fields.

Original languageEnglish
Article numberSK1001
JournalJapanese journal of applied physics
Issue numberSK
Publication statusPublished - 2022 Aug 1


  • extinction ratio
  • optical modulator
  • polarizer
  • silicon photonics

ASJC Scopus subject areas

  • General Engineering
  • General Physics and Astronomy


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