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

Ma, Youqiao, Farrell, Gerald, Semenova, Yuliya, Chan, Hau Ping, Zhang, Hongzhou and Wu, Qiang (2014) Low loss, high extinction ration and ultra-compact plasmonic polarization beam splitter. IEEE Photonics Technology Letters, 26 (7). pp. 660-663. ISSN 1041-1135

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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.

Item Type:	Article
Uncontrolled Keywords:	plasmon polaritons, polarization beam splitter
Subjects:	H600 Electronic and Electrical Engineering
Department:	Faculties > Engineering and Environment > Mathematics, Physics and Electrical Engineering
Depositing User:	Ay Okpokam
Date Deposited:	12 May 2015 15:31
Last Modified:	12 Oct 2019 19:08
URI:	http://nrl.northumbria.ac.uk/id/eprint/22455

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