Embedded-Silicon-Strip-to-Hybrid-Plasmonic Waveguide Polarization Mode Converter

Yin Jung Chang, Ren Wei Feng

Research output: Contribution to journalArticlepeer-review

6 Scopus citations


A novel polarization mode converter bridging a conventional embedded silicon strip waveguide and a metal-capped hybrid plasmonic waveguide is proposed. Innovative design principles based on gradient ascent of the TM polarization fraction in conjunction with the modal index contour for practical initial designs are developed and numerically verified. The mode conversion efficiency (MCE), insertion loss (IL), and the polarization conversion efficiency (PCE) at λ0 = 1550 nm are 87.58%, 0.5899 dB, and 99.84%, respectively. The respective 1-dB optical bandwidths for the MCE and IL are about 133 and 140 nm, while the PCE is > 98% over a 102-nm spectral range. The low-index silica spacer is found to impose the most stringent fabrication requirement.

Original languageEnglish
Article number7880612
Pages (from-to)759-762
Number of pages4
JournalIEEE Photonics Technology Letters
Issue number9
StatePublished - 1 May 2017


  • Mode converter
  • plasmonic waveguide
  • polarization rotation


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