Tunable Plasmonic Filter Based on Graphene Split-Ring

We propose in this paper a tunable plasmonic filter based on graphene split-ring (GSR) resonator. It is found the resonances could be classified into two categories, i.e., even-parity and odd-parity mode according to the symmetry of field profile in GSR. The coupling between graphene nanoribbon and GSR is GSR-orientation sensitive, and the odd-parity mode presents a greater sensitivity due to its asymmetric field profile. The transmission spectrum of the proposed filter could be efficiently modified by tuning the shape, orientation, and Fermi level of GSR. The proposed structure can be applied in the tunable ultra-compact graphene plasmonic devices for future nanoplasmonic applications.

[1]  S. Thongrattanasiri,et al.  The magnetic response of graphene split-ring metamaterials , 2013, Light: Science & Applications.

[2]  R. Hillenbrand,et al.  Efficient coupling of light to graphene plasmons by compressing surface polaritons with tapered bulk materials. , 2014, Nano letters.

[3]  Qi Jie Wang,et al.  Graphene-based tunable plasmonic Bragg reflector with a broad bandwidth. , 2014, Optics letters.

[4]  F. Kong,et al.  Plasmonic bandpass filter based on graphene nanoribbon. , 2015, Applied optics.

[5]  A. N. Grigorenko,et al.  Graphene plasmonics , 2012, Nature Photonics.

[6]  Qianfan Xu,et al.  Excitation of plasmonic waves in graphene by guided-mode resonances. , 2012, ACS nano.

[7]  Sailing He,et al.  Graphene nano-ribbon waveguides of record-small mode area and ultra-high effective refractive indices for future VLSI. , 2013, Optics express.

[8]  P. Ajayan,et al.  Gated tunability and hybridization of localized plasmons in nanostructured graphene. , 2013, ACS nano.

[9]  Lay Kee Ang,et al.  Electro-optical graphene plasmonic logic gates. , 2014, Optics letters.

[10]  H. Bechtel,et al.  Graphene plasmonics for tunable terahertz metamaterials. , 2011, Nature nanotechnology.

[11]  Xiang Zhai,et al.  Investigation of the graphene based planar plasmonic filters , 2013 .

[12]  Huili Grace Xing,et al.  Efficient terahertz electro-absorption modulation employing graphene plasmonic structures , 2012 .

[13]  Yikai Su,et al.  Coupled mode theory analysis of mode-splitting in coupled cavity system. , 2010, Optics express.

[14]  Jingjun Xu,et al.  Tunable terahertz optical antennas based on graphene ring structures , 2012 .

[15]  Y. Kivshar,et al.  Second-harmonic generation by a graphene nanoparticle , 2014 .

[16]  D. Gramotnev,et al.  Plasmonics beyond the diffraction limit , 2010 .

[17]  S. Thongrattanasiri,et al.  Graphene plasmon waveguiding and hybridization in individual and paired nanoribbons. , 2012, ACS nano.

[18]  Mei Zhang,et al.  Graphene disk as an ultra compact ring resonator based on edge propagating plasmons , 2013 .

[19]  Lin Chen,et al.  A Graphene-Based Hybrid Plasmonic Waveguide With Ultra-Deep Subwavelength Confinement , 2014, Journal of Lightwave Technology.