Spectrum analysis of side-coupled semicircular cavity-waveguide based on Surface Plasmon Polaritons
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摘要: 设计了一种新型的基于金属表面等离子激元（Surface Plasmon Polaritons，SPPs）的亚波长金属-介质-金属型滤波器.该滤波器由一个半圆形谐振腔和一个直波导组成.使用时域耦合模理论和传输变换矩阵方法对结构进行理论分析,并通过时域有限差分方法(the finite difference time domain method，FDTD)进行数值模拟得出光谱响应.讨论了几何参数对透射曲线的影响, 并设计了一种双腔结构来获得高对比度的透射曲线.
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关键词:
- 徐兴恺，梁瑞生*，于 哲，黄桥东，陈丕欣
Abstract: A novel subwavelength surface plasmon polaritons optical filter based on metal-dielectric-metal (MDM) waveguide with the semicircular cavity is proposed and investigated. Temporal coupled mode theory and the finite difference time domain method (FDTD) are utilized to analyze the structure and get the transmission response. The filter characteristic and the dependence of the resonant wavelength on geometric parameters of the structure are also discussed in this paper, and a type of double cavities structure is designed in order to realize higher transmission contrast.-
Keywords:
- Surface Plasmon Polaritons
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[15]HU F F, YI H X, ZHOU Z P.A wavelength demultiplexing structure based on arrayed plasmonic slot cavities[J].Opt Lett,2011,36(8):1500-1502
[16]ZHANG Q, HUANG X G, LIN X S, et al.A subwavelength coupler-type MIM optical filter[J].Opt Express,2009,17(9):7549-7554
[17]LU H, LIU X M, MAO D, et al.Tunable band-pass plasmonic waveguide filters with nanodisk resonators[J].Opt Express,2010,18(17):17922-17927
[18]WANG B, WANG G P.Plasmonic waveguide ring resonator at terahertz frequencies[J].Appl Phys Lett,2006,89(13):133106-133108
[19]LIN X S, HUANG X G.Tooth-shaped plasmonic waveguide filters with nanometeric sizes[J].Opt Lett,2008,33(23):2874-2876
[20]XIAO S S, LIU L, QIU M.Resonator channel drop filters in a plasmon-polaritons metal[J].Opt Express,2006,14(7):2932-2937
[21]CHEN P X, LIANG R S, HUANG Q D, et al.Plasmonic filter with sub-waveguide coupled to vertical rectangular resonator structure[J].Opt Commun,2011,284(19):4795-4799
[22]LI Q, WANG T, SU Y K, et al.Coupled mode theory analysis of mode-splitting in coupled cavity system[J].Opt Express,2010,18(8):8367-8382
[23]DITLBACHER H, KRENN J R, SCHIDER G, et al.Two-dimensional optics with surface plasmon polaritons[J].Appl Phys Lett,2002,81(10):1762-1764
[24]JOHNSON P B, CHRISTY R W.Optical constants of the noble metals[J].Phys Rev B,1972,6(12):4370-4379
[1]BARNES W L, DEREUX A, EBBESEN T W.Surface plasmon subwavelength optics[J].Nature,2003,424(6950):824-830
[2]GENET C, EBBESEN T W.Light in tiny holes[J].Nature,2007,445(7123):39-46
[3]ZHONG Z J, XU Y, LAN S, et al.Sharp and asymmetric transmission response in metal-dielectric-metal plasmonic waveguides containing Kerr nonlinear media[J].Opt Express,2010,18(1):79-86
[4]WANG B, WANG G P.Surface plasmon polariton propagation in nanoscale metal gap waveguides[J].Opt Lett,2004,29(17):1992-1994
[5]CHEN P X, LIANG R S, HUANG Q D, et al.Plasmonic filters and optical directional couplers based on wide metal-insulator-metal structure[J].Opt Express,2011,19(8):7633-7639
[6]HAN Z H, LIU L, FORSBERG E.Ultra-compact directional couplers and Mach–Zehnder interferometers employing surface plasmon polaritons[J].Opt Commun,2006,259:690-695
[7]VERONIS G, FAN S.Bends and splitters in metal-dielectric-metal subwavelength plasmonic waveguides[J].Appl Phys Lett,2005,87(13):131102-131104
[8]WANG B, WANG G P.Plasmon Bragg reflectors and nanocavities on flat metallic surfaces[J].Appl Phys Lett,2005,87(1):013107-013109
[9]HAN Z H, FORSBERG E, HE S.Surface plasmon Bragg gratings formed in metal-insulator-metal waveguides[J].IEEE Photon Technol Lett,2007,19(2):91-93
[10]HOSSEINI A, MASSOUD Y.A low-loss metal-insulator-metal plasmonic bragg reflector[J].Opt Express,2006,14(23):11318-11323
[11]LIU J Q, WANG L L, HE M D, et al.A wide bandgap plasmonic Bragg reflector[J].Opt Express,2008,16(7):4888-4894
[12]KRASAVIN V, ZAYATS A V.All-optical active components for dielectric-loaded plasmonic waveguides[J].Opt Commun,2010,283:1581-1584
[13]MEI X, HUANG X G, TAO J, et al.A wavelength demultiplexing structure based on plasmonic MDM side-coupled cavities[J].J Opt Soc Am B,2010,27(12):2707-2713
[14]WANG G, LU H, LIU X M, et al.Tunable multi-channel wavelength demultiplexer based on MIM plasmonic nanodisk resonators at telecommunication regime[J].Opt Express,2011,19(4):3513-3518
[15]HU F F, YI H X, ZHOU Z P.A wavelength demultiplexing structure based on arrayed plasmonic slot cavities[J].Opt Lett,2011,36(8):1500-1502
[16]ZHANG Q, HUANG X G, LIN X S, et al.A subwavelength coupler-type MIM optical filter[J].Opt Express,2009,17(9):7549-7554
[17]LU H, LIU X M, MAO D, et al.Tunable band-pass plasmonic waveguide filters with nanodisk resonators[J].Opt Express,2010,18(17):17922-17927
[18]WANG B, WANG G P.Plasmonic waveguide ring resonator at terahertz frequencies[J].Appl Phys Lett,2006,89(13):133106-133108
[19]LIN X S, HUANG X G.Tooth-shaped plasmonic waveguide filters with nanometeric sizes[J].Opt Lett,2008,33(23):2874-2876
[20]XIAO S S, LIU L, QIU M.Resonator channel drop filters in a plasmon-polaritons metal[J].Opt Express,2006,14(7):2932-2937
[21]CHEN P X, LIANG R S, HUANG Q D, et al.Plasmonic filter with sub-waveguide coupled to vertical rectangular resonator structure[J].Opt Commun,2011,284(19):4795-4799
[22]LI Q, WANG T, SU Y K, et al.Coupled mode theory analysis of mode-splitting in coupled cavity system[J].Opt Express,2010,18(8):8367-8382
[23]DITLBACHER H, KRENN J R, SCHIDER G, et al.Two-dimensional optics with surface plasmon polaritons[J].Appl Phys Lett,2002,81(10):1762-1764
[24]JOHNSON P B, CHRISTY R W.Optical constants of the noble metals[J].Phys Rev B,1972,6(12):4370-4379
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