Low loss, high extinction ration and ultra-compact plasmonic polarization beam splitter

Youqiao Ma, Gerald Farrell, Yuliya Semenova, Hau Ping Chan, Hongzhou Zhang, Qiang Wu

Research output: Contribution to journalArticlepeer-review

20 Citations (Scopus)

Abstract

In this letter, an ultra-compact plasmonic polarization beam splitter (PBS) is proposed and investigated by numerical simulations using the finite element method. The PBS is based on a three-core plasmonic directional coupler, which uses a long range surface plasmon polaritons waveguide as the middle waveguide to achieve polarization selective coupling. The calculations show that with proper structural parameters, the PBS with low insertion losses of 0.17 and 0.25 dB for TE and TM polarizations, respectively, and high extinction ratios of 20.17 and 19.83 dB for TE and TM polarizations, respectively, can be realized at a telecommunication wavelength of 1550 nm. Furthermore, an insertion loss and an extinction ratio > 14 dB can be realized across the entire C-band for both TE and TM polarizations.
Original languageEnglish
Pages (from-to)660-663
JournalIEEE Photonics Technology Letters
Volume26
Issue number7
DOIs
Publication statusPublished - 24 Jan 2014

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