[1] Wen K H, Hu Y H, Chen L et al. Fano resonance with ultra-high figure of merits based on plasmonic metal-insulator-metal waveguide[J]. Plasmonics, 10, 27-32(2015).

[2] Veronis G, Fan S H. Bends and splitters in metal-dielectric-metal subwavelength plasmonic waveguides[J]. Applied Physics Letters, 87, 131102(2005).

[3] Economou E N. Surface plasmons in thin films[J]. Physical Review, 182, 539-554(1969).

[4] Shuai Y H, Qi P, Li Y et al. Detection of interaction between peach-gum polysaccharides and galectin-3 via surface plasmon resonance imaging[J]. Laser & Optoelectronics Progress, 56, 092402(2019).

[5] Hao F, Sonnefraud Y, Dorpe P V et al. Symmetry breaking in plasmonic nanocavities: subradiant LSPR sensing and a tunable Fano resonance[J]. Nano Letters, 8, 3983-3988(2008).

[6] Zhang S, Genov D A, Wang Y et al. Plasmon-induced transparency in metamaterials[J]. Physical Review Letters, 101, 047401(2008).

[7] Hosseini A, Massoud Y. Nanoscale surface plasmon based resonator using rectangular geometry[J]. Applied Physics Letters, 90, 181102(2007).

[8] Zhang Z, Shi F H, Chen Y H. Tunable multichannel plasmonic filter based on coupling-induced mode splitting[J]. Plasmonics, 10, 139-144(2015).

[9] Zhong X L. A narrow-band subwavelength plasmonic waveguide filter with metal-insulator-metal Bragg reflector[J]. Acta Photonica Sinica, 40, 537-541(2011).

[10] Zhang J X, Zhang L D, Xu W. Surface plasmon polaritons: physics and applications[J]. Journal of Physics D-Applied Physics, 45, 1311-1318(2012).

[11] Chen Z, Wang W H, Cui L N et al. Spectral splitting based on electromagnetically induced transparency in plasmonic waveguide resonator system[J]. Plasmonics, 10, 721-727(2015).

[12] Chen Z, Yu L. Multiple Fano resonances based on different waveguide modes in a symmetry breaking plasmonic system[J]. IEEE Photonics Journal, 6, 4802208(2014).

[13] Lu H, Liu X M, Mao D et al. Plasmonic nanosensor based on Fano resonance in waveguide-coupled resonators[J]. Optics Letters, 37, 3780-3782(2012).

[14] Wu C, Khanikaev A B, Adato R et al. Fano-resonant asymmetric metamaterials for ultrasensitive spectroscopy and identification of molecular monolayers[J]. Nature Materials, 11, 69-75(2012).

[15] Lou X W, Cui J J, Dong N N et al. Analysis of sharpness Fano resonance line based on eye-like resonator[J]. Acta Photonica Sinica, 44, 0113002(2015).

[16] Yun B F, Zhang R H, Hu G H et al. Ultrasharp Fano resonances induced by coupling between plasmonic stub and circular cavity resonators[J]. Plasmonics, 11, 1157-1162(2016).

[17] Chen Z, Yu L, Wang L L et al. A refractive index nanosensor based on Fano resonance in the plasmonic waveguide system[J]. IEEE Photonics Technology Letters, 27, 1695-1698(2015).

[18] Shi Y, Zhang G M, An H L et al. Controllable Fano resonance based on coupled square split-ring resonance cavity[J]. Acta Photonica Sinica, 46, 193-201(2017).

[19] Yang J H, Song X K, Chen Z et al. Tunable multi-Fano resonances in MDM-based side-coupled resonator system and its application in nanosensor[J]. Plasmonics, 12, 1665-1672(2017).

[20] Chen Z, Yu L, Wang L L et al. Sharp asymmetric line shapes in a plasmonic waveguide system and its application in nanosensor[J]. Journal of Lightwave Technology, 33, 3250-3253(2015).

[21] Chen Y, Xu Y M, Gao X B et al. Fano resonance sensing characteristics of MIM waveguide coupled T-shaped cavity structure with rectangular cavity[J]. Chinese Journal of Lasers, 46, 0113001(2019).

[22] Yang Y R, Guan J F. Numerical study of plasmonic filter based on metal-insulator-metal waveguide[J]. Acta Physica Sinica, 65, 057301(2016).

[23] Zhang S P, Bao K, Halas N J et al. Substrate-induced Fano resonances of a plasmonic nanocube: a route to increased-sensitivity localized surface plasmon resonance sensors revealed[J]. Nano Letters, 11, 1657-1663(2011).

[24] Peng B, Özdemir Ş K, Chen W J et al. What is and what is not electromagnetically induced transparency in whispering-gallery microcavities[J]. Nature Communications, 5, 5082(2014).

[25] Zhang Q, Huang X G, Lin X S et al. A subwavelength coupler-type MIM optical filter[J]. Optics Express, 17, 7549-7554(2009).

[26] Han S T, Chen Y, Di Y J et al. Fano resonance dual mode performance of single baffle contained MDM waveguide coupled disk cavity[J]. Acta Optica Sinica, 38, 1024002(2018).

[27] Manolatou C, Khan M J, Fan S et al. Coupling of modes analysis of resonant channel add-drop filters[J]. IEEE Journal of Quantum Electronics, 35, 1322-1331(1999).

[28] Suh W, Wang Z, Fan S H. Temporal coupled-mode theory and the presence of non-orthogonal modes in lossless multimode cavities[J]. IEEE Journal of Quantum Electronics, 40, 1511-1518(2004).

[29] Luk'Yanchuk B, Zheludev N I, Maier S A et al. The Fano resonance in plasmonic nanostructures and metamaterials[J]. Nature Materials, 9, 707-715(2010).

[30] Chen J J, Sun C W, Gong Q H. Fano resonances in a single defect nanocavity coupled with a plasmonic waveguide[J]. Optics Letters, 39, 52-54(2014).

[31] Zhang Z D, Wang R B, Zhang Z Y et al. Electromagnetically induced transparency and refractive index sensing for a plasmonic waveguide with a stub coupled ring resonator[J]. Plasmonics, 12, 1007-1013(2017).

[32] Wu C, Khanikaev A B, Shvets G. Broadband slow light metamaterial based on a double-continuum Fano resonance[J]. Physical Review Letters, 106, 107403(2011).