Ultra-broadband wide-angle unidirectional plasmonic coupler based on joint effects of plasmonic critical angles and subwavelength metallic gratings

被引：6
|
作者：
Lu, Fan [1 ]
Xiao, Feng [2 ]
Li, Kun [1 ]
Xu, Anshi [1 ]
机构：
[1] Peking Univ, Sch Elect Engn & Comp Sci, State Key Lab Adv Opt Commun Syst & Networks, Beijing 100871, Peoples R China
[2] Edith Cowan Univ, Elect Sci Res Inst, Joondalup 6027, Australia
来源：
OPTICS LETTERS | 2014年 / 39卷 / 11期
基金：
中国国家自然科学基金;
关键词：
OPTICAL-TRANSMISSION; SURFACE-PLASMONS; EFFICIENT; LENGTH; SLIT;
D O I：
10.1364/OL.39.003254
中图分类号：
O43 [光学];
学科分类号：
070207 ; 0803 ;
摘要：
A unidirectional plasmonic coupler with ultra-broadband and wide-angle coupling efficiency is proposed and demonstrated. Employing the plasmonic critical angle (PCA) phenomenon in conjunction with the effect of sub-wavelength metallic gratings, a wide incident angular full-width-half-maximum (AFWHM >28 degrees) coupling efficiency larger than 50% and extinction ratio better than 15 dB over an ultrabroad wavelength range 725-985 nm (bandwidth >260 nm) are achieved. The operation principle and performance of the structure are clarified and theoretically illustrated. (C) 2014 Optical Society of America
引用
收藏
页码：3254 / 3257
页数：4
相关论文
共 33 条
  • [1] Ultra-Broadband Absorption in Metallic Gratings at the 'Plasmonic Brewster Angle
    Argyropoulos, Christos
    Alu, Andrea
    2013 US NATIONAL COMMITTEE OF URSI NATIONAL RADIO SCIENCE MEETING (USNC-URSI NRSM), 2013,
  • [2] Unidirectional launching of surface plasmons with subwavelength metallic gratings around the plasmonic critical angle
    Wang, Zhonghua
    Zhang, Mingqian
    Wang, Jia
    Lu, Fan
    Li, Kun
    Xu, Anshi
    APPLIED PHYSICS LETTERS, 2012, 101 (06)
  • [3] An efficient and ultra-broadband unidirectional optical coupler for wide incidence angles
    Lu, Fan
    Wang, Zhonghua
    Tian, Zhixin
    Xu, Anshi
    OPTICS COMMUNICATIONS, 2016, 379 : 1 - 5
  • [4] Plasmonic critical angle in optical transmission through subwavelength metallic gratings
    Wang, Zhonghua
    Li, Guangyuan
    Xiao, Feng
    Lu, Fan
    Li, Kun
    Xu, Anshi
    OPTICS LETTERS, 2011, 36 (23) : 4584 - 4586
  • [5] Design and Analysis of an Ultra-Broadband Polarization-Independent Wide-Angle Plasmonic THz Absorber
    Shabani, Mostafa
    Mir, Ali
    IEEE JOURNAL OF QUANTUM ELECTRONICS, 2021, 57 (03)
  • [6] Unidirectional coupling of surface plasmons with ultra-broadband and wide-angle efficiency: potential applications in sensing
    Li, Kun
    Xiao, Feng
    Lu, Fan
    Alameh, Kamal
    Xu, Anshi
    NEW JOURNAL OF PHYSICS, 2013, 15
  • [7] Ultra-broadband Polarization-Independent Wide-Angle THz Absorber Based on Plasmonic Resonances in Semiconductor Square Nut-Shaped Metamaterials
    Liu, Xiao
    Zhang, Qing
    Cui, Xudong
    PLASMONICS, 2017, 12 (04) : 1137 - 1144
  • [8] Ultra-broadband Polarization-Independent Wide-Angle THz Absorber Based on Plasmonic Resonances in Semiconductor Square Nut-Shaped Metamaterials
    Xiao Liu
    Qing Zhang
    Xudong Cui
    Plasmonics, 2017, 12 : 1137 - 1144
  • [9] An ultra-broadband and wide-angle absorber based on a TiN metamaterial for solar harvesting
    Sun, Chunlei
    Liu, Haotuo
    Yang, Bing
    Zhang, Kaihua
    Zhang, Bin
    Wu, Xiaohu
    PHYSICAL CHEMISTRY CHEMICAL PHYSICS, 2022, 25 (01) : 806 - 812
  • [10] Ultra-broadband and wide-angle plasmonic absorber based on all-dielectric gallium arsenide pyramid nanostructure for full solar radiation spectrum range
    Wu, Ling
    Yang, Lingling
    Zhu, Xinwang
    Cai, Bin
    Cheng, Yongzhi
    INTERNATIONAL JOURNAL OF THERMAL SCIENCES, 2024, 201
1234