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Title: Experimental demonstration of an on-chip polarization splitter in a submicron asymmetric dielectric-coated metal slit

Abstract

A submicron asymmetric dielectric-coated metal slit with a Fabry–Perot (FP) nano-resonator is experimentally fabricated to realize an ultra-small on-chip polarization splitter. In the hybrid plasmonic structure, both of the transverse-electric (TE) and transverse-magnetic (TM) modes can be efficiently generated on the front metal surface. Based on the quite different resonant conditions and the different field confinements of the two orthogonal polarization modes in the FP resonator, the TM and TE modes are generated to propagate in the opposite directions along the metal surface. In this device, there are no coupling waveguide regions, and the excitation and the splitting of the TE and TM modes are integrated into the same asymmetric nano-slit. This considerably shrinks the device dimension to only about 850 nm (about one wavelength). In such a submicron asymmetric slit, the measured extinction ratios for the two opposite directions can reach up to (η{sub L}/η{sub R}){sup TM} ≈ 1:14 and (η{sub L}/η{sub R}){sup TE} ≈ 11:1 at λ = 820 nm. This on-chip submicron polarization splitter is of importance in highly integrated photonic circuits.

Authors:
; ;  [1];  [1]
  1. State Key Laboratory for Mesoscopic Physics and Department of Physics, Peking University, Beijing 100871 (China)
Publication Date:
OSTI Identifier:
22300272
Resource Type:
Journal Article
Journal Name:
Applied Physics Letters
Additional Journal Information:
Journal Volume: 104; Journal Issue: 23; Other Information: (c) 2014 AIP Publishing LLC; Country of input: International Atomic Energy Agency (IAEA); Journal ID: ISSN 0003-6951
Country of Publication:
United States
Language:
English
Subject:
75 CONDENSED MATTER PHYSICS, SUPERCONDUCTIVITY AND SUPERFLUIDITY; ASYMMETRY; CONFINEMENT; COUPLING; DIELECTRIC MATERIALS; EXCITATION; METALS; POLARIZATION; RESONATORS; SURFACES; WAVEGUIDES; WAVELENGTHS

Citation Formats

Chen, Jianjun, Sun, Chengwei, Gong, Qihuang, Collaborative Innovation Center of Quantum Matter, Beijing, and Li, Hongyun. Experimental demonstration of an on-chip polarization splitter in a submicron asymmetric dielectric-coated metal slit. United States: N. p., 2014. Web. doi:10.1063/1.4882651.
Chen, Jianjun, Sun, Chengwei, Gong, Qihuang, Collaborative Innovation Center of Quantum Matter, Beijing, & Li, Hongyun. Experimental demonstration of an on-chip polarization splitter in a submicron asymmetric dielectric-coated metal slit. United States. doi:10.1063/1.4882651.
Chen, Jianjun, Sun, Chengwei, Gong, Qihuang, Collaborative Innovation Center of Quantum Matter, Beijing, and Li, Hongyun. Mon . "Experimental demonstration of an on-chip polarization splitter in a submicron asymmetric dielectric-coated metal slit". United States. doi:10.1063/1.4882651.
@article{osti_22300272,
title = {Experimental demonstration of an on-chip polarization splitter in a submicron asymmetric dielectric-coated metal slit},
author = {Chen, Jianjun and Sun, Chengwei and Gong, Qihuang and Collaborative Innovation Center of Quantum Matter, Beijing and Li, Hongyun},
abstractNote = {A submicron asymmetric dielectric-coated metal slit with a Fabry–Perot (FP) nano-resonator is experimentally fabricated to realize an ultra-small on-chip polarization splitter. In the hybrid plasmonic structure, both of the transverse-electric (TE) and transverse-magnetic (TM) modes can be efficiently generated on the front metal surface. Based on the quite different resonant conditions and the different field confinements of the two orthogonal polarization modes in the FP resonator, the TM and TE modes are generated to propagate in the opposite directions along the metal surface. In this device, there are no coupling waveguide regions, and the excitation and the splitting of the TE and TM modes are integrated into the same asymmetric nano-slit. This considerably shrinks the device dimension to only about 850 nm (about one wavelength). In such a submicron asymmetric slit, the measured extinction ratios for the two opposite directions can reach up to (η{sub L}/η{sub R}){sup TM} ≈ 1:14 and (η{sub L}/η{sub R}){sup TE} ≈ 11:1 at λ = 820 nm. This on-chip submicron polarization splitter is of importance in highly integrated photonic circuits.},
doi = {10.1063/1.4882651},
journal = {Applied Physics Letters},
issn = {0003-6951},
number = 23,
volume = 104,
place = {United States},
year = {2014},
month = {6}
}