摘要
提出了一种基于锯齿共振腔耦合金属波导结构。研究发现,该波导结构在加入锯齿共振腔后有更好的信号输出频率,可通过调整锯齿共振腔长度和宽度实现对逻辑门光源输出信号频率的控制;并通过增加结构中输出波导数量来增加逻辑信号的输出端口,可实现双通道及三通道逻辑信号的输出功能。该锯齿共振腔耦合金属波导结构构建的逻辑门输出光源具有较好的传输效率和较宽的工作带宽,通过调整锯齿共振腔的长宽参数,传输效率可达60%,平均工作范围为1000nm。
A sawtooth resonant-cavity-coupled metal-waveguide structure is proposed.It is found that adding a sawtooth resonator improves the signal output frequency of the waveguide structure.In addition,the output signal frequency of the logic-gate light source can be controlled by adjusting the length and width of the sawtooth resonator.Moreover,the increase of logic signal output ports by increasing the number of output waveguides can help to realize the two-and three-channel signal outputs.This logic gate output light source,constructed by coupling a sawtooth resonator with a metal waveguide structure,has a broad working bandwidth and a high transmission efficiency.With a suitable adjustment of the length and width of the sawtooth resonator one can get a transmission efficiency of 60% and an average working range of 1000 nm.
引文
[1] Wen J,Chen J N, Wang K,et al.Broadband plasmonic logic input sources constructed with dual square ring resonators and dual waveguides[J].IEEE Photonics Journal,2016,8(2):1-9.
[2] Barnes W L,Dereux A,Ebbesen T W.Surface plasmon subwavelength optics[J].Nature,2003,424(6950):824-830.
[3] Wang X L, Wang P,Chen C C,et al.Active modulation of plasmonic signal with a subwavelength metal/nonlinear dielectric material/metal structure[J].Chinese Optics Letters,2010,8(6):584-587.
[4] Li X W,Tan Q F,Bai B F,et al.Tunable directional beaming assisted by asymmetrical SPP excitation in a subwavelength metallic double slit[J].Chinese Optics Letters,2012,10(5):052401.
[5] Lal S,Link S,Halas N J.Nano-optics from sensing to waveguiding[J].Nature Photonics,2007,1(11):641-648.
[6] Maier S A,Kik P G,Atwater H A,et al.Local detection of electromagnetic energy transport below the diffraction limit in metal nanoparticle plasmon waveguides[J].Nature Materials,2003,2(4):229-232.
[7] Ozbay E. Plasmonics:merging photonics and electronics at nanoscale dimensions[J].Science,2006,311(5758):189-193.
[8] Gramotnev D K,Bozhevolnyi S I.Plasmonics beyond the diffraction limit[J].Nature Photonics,2010,4(2):83-91.
[9] Zhao H W, Huang X G, Huang J T.Surface plasmon polaritons based optical directional coupler[J].Science in China Series G:Physics,Mechanics and Astronomy,2008,51(12):1877.
[10] Chen Y L,Xu J,Shi N N,et al.Mode properties of metal-insulator-metal waveguide Bragg grating[J].Acta Optica Sinica,2017,37(11):1123002.陈奕霖,许吉,时楠楠,等.金属-介质-金属波导布拉格光栅的模式特性[J].光学学报,2017,37(11):1123002.
[11] Wang T B, Wen X W,Yin C P,et al.The transmission characteristics of surface plasmon polaritons in ring resonator[J].Optics Express,2009,17(26):24096-24101.
[12] Bozhevolnyi S I,Volkov V S,Devaux E,et al.Channelplasmonsubwavelengthwaveguide components includinginterferometersandring resonators[J].Nature,2006,440(7083):508-511.
[13] Lin X S, Huang X G. Tooth-shaped plasmonic waveguide filters with nanometeric sizes[J].Optics Letters,2008,33(23):2874-2876.
[14] Lin X S,Huang X G.Numerical modeling of a teethshaped nanoplasmonic waveguide filter[J].Journal of the Optical Society of America B,2009,26(7):1263-1268.
[15] Tao J,Huang X G,Lin X S,et al.A narrow-band subwavelength plasmonic waveguide filter with asymmetrical multiple-teeth-shaped structure[J].Optics Express,2009,17(16):13989-13994.
[16] Tao J,HuangX G,Lin X S,et al.Systematical research on characteristics of double-sided teethshaped nanoplasmonic waveguide filters[J].Journal of the Optical Society of America B,2010,27(2):323-327.
[17] Yu N F,Blanchard R,Fan J,et al.Quantum cascade lasers with integrated plasmonic antennaarray collimators[J].Optics Express,2008,16(24):19447-19461.
[18] Wu D Q,Huang C,Yang W F.Improvement on pH sensing properties based on surface treatment of graphene plasma[J]. Laser&Optoelectronics Progress,2017,54(1):012401.吴冬芹,黄翀,杨玮枫.基于石墨烯等离子体表面处理改善pH传感特性的研究[J].激光与光电子学进展,2017,54(1):012401.
[19] Yu N F,Kats M A,Pflügl C,et al.Multi-beam multi-wavelength semiconductor lasers[J].Applied Physics Letters,2009,95(16):161108.
[20] Yu N F,Wang Q J,Kats M A,et al.Designer spoof surface plasmon structures collimate terahertz laser beams[J].Nature Materials,2010,9(9):730-735.
[21] Huang C,Sun W Z,Fan Y B,et al.Formation of lead halide perovskite based plasmonic nanolasers and nanolaser arrays by tailoring the substrate[J].ACS Nano,2018,12(4):3865-3874.
[22] Shapoval O V, Kobayashi K, Nosich A I.Electromagneticengineeringofasingle-mode nanolaser on a metal plasmonic strip placed into a circular quantum wire[J].IEEE Journal of Selected Topics in Quantum Electronics,2017,23(6):1-9.
[23] Xiao G L, Liu L, Yang H Y,et al. Light transmissioncharacteristicsofmetalcurved waveguide based on microcavity coupling structures[J].Acta Optica Sinica,2017,37(12):1213001.肖功利,刘利,杨宏艳,等.基于微腔耦合结构金属弯曲波导的光透射特性[J].光学学报,2017,37(12):1213001.
[24] Dolatabady A,Granpayeh N.All-optical logic gates in plasmonic metal-insulator-metal nanowaveguide with slotcavityresonator[J]. Journalof Nanophotonics,2017,11(2):026001.
[25] Ferreira A C,Sobrinho C S,Guimares G F,et al.All-optical logic gates based on XPM effect under the PAM-ASK modulation in a symmetric dual NLDC[J].Microsystem Technologies,2018:447-459.
[26] Han Z H,Forsberg E,He S L.Surface plasmon Bragg gratings formed in metal-insulator-metal waveguides[J].IEEE Photonics Technology Letters,2007,19(2):91-93.
[27] Zhai X,Wang L,Wang L L,et al.Tuning bandgap of a double-tooth-shaped MIM waveguide filter by control widths of the teeth[J].Journal of Optics,2013,15(5):055008.
[28] Kaminow I P,Mammel W L,Weber H P.Metalclad optical waveguides:analytical and experimental study[J].Applied Optics,1974,13(2):396-405.