Title :
Ultracompact TE-Pass Polarizer Based on a Hybrid Plasmonic Waveguide
Author :
Zhoufeng Ying ; Guanghui Wang ; Xuping Zhang ; Ying Huang ; Ho-Pui Ho ; Yixin Zhang
Author_Institution :
Inst. of Opt. Commun. Eng., Nanjing Univ., Nanjing, China
Abstract :
An ultracompact and broadband TE-pass polarizer based on a hybrid plasmonic waveguide is proposed on the silicon-on-insulator platform. The optimized design has an active region as small as 0.8 μm, which is the shortest polarizer reported until now, and exhibits high polarization-dependent transmission imposing a TM mode cutoff while leaving the TE mode almost unaffected. Finite-difference time-domain simulation reveals an insertion loss <;1 dB and an extinction ratio of 19 dB. The extinction ratio could be further improved to 25 dB over 300-nm bandwidth, with an insertion loss of 2.5 dB.
Keywords :
finite difference time-domain analysis; integrated optics; light polarisation; light transmission; optical design techniques; optical losses; optical polarisers; optical waveguides; plasmonics; silicon-on-insulator; Si; TE mode; TM mode cutoff; active region; broadband TE-pass polarizer; extinction ratio; finite-difference time-domain simulation; hybrid plasmonic waveguide; insertion loss; loss 2.5 dB; polarization-dependent transmission; silicon-on-insulator platform; ultracompact TE-pass polarizer; Couplings; Extinction ratio; Insertion loss; Optical waveguides; Optimized production technology; Plasmons; Silicon; Integrated optics; polarizer; surface plasmons; waveguide;
Journal_Title :
Photonics Technology Letters, IEEE
DOI :
10.1109/LPT.2014.2365029
