Abstract
Graphene-based optical switches are one of the promising building blocks for future optical integrated circuits. For the first time in this paper, a novel all-optical graphene-based cross-bar switch is proposed. The structure is based on our recently reported suspended graphene plasmonic coupler. The high carrier mobility of the suspended graphene layer results in long propagation lengths of surface plasmon polaritons that are essential for realizing cross-bar optical switching. Dispersion relations of surface plasmon polaritons of a simple suspended graphene-based structure are derived in the nonlinear state. The relations are employed to analyze the device using the effective index method (EIM) that reduces the time and memory requirements, significantly. The switching length at the wavelength of 10 μm is as short as 2.6 μm. The required optical pump intensity is calculated as approximately 77 MW/cm2. The switching operation of the structure is investigated using the finite-difference time-domain method. According to the presented results, extinction ratios of as high as 11.18 and 11.1 dB are obtained at the bar and cross output ports, respectively. A wide spectral width of more than 1 μm is also calculated. Finally, the transient response of the structure is investigated and the switching time of less than 3 ps is predictable.
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Xia F, Mueller T, Lin YM, Valdes-Garcia A, Avouris P (2009) Ultrafast graphene photodetector. Nat Nanotechnol 4:839–843
Maiti R, Sinha TK, Mukherjee S, Adhikari B, Ray SK (2016) Enhanced and selective photodetection using graphene-stabilized hybrid plasmonic silver nanoparticles. Plasmonics 11(5):1297–1304
Bao Q, Zhang H, Wang B, Ni Z, Lim CHYX, Wang Y, Tang DY, Loh KP (2011) Broadband graphene polarizer. Nat Photonics 5:411–415
Zhu B, Ren G, Gao Y, Wu B, Wan C, Jian S (2016) Magnetically-controlled logic gates of graphene plasmons based on non-reciprocal coupling. IEEE J Sel Top Quantum Electron 22(2):4600307
Farmani A, Zarifkar A, Sheikhi MH, Miri M (2017) Design of a tunable graphene plasmonic-on-white graphene switch at infrared range. Superlattice Microst 112:404–414
Bahadori-Haghighi S, Ghayour R, Sheikhi MH (2017) Three-dimensional analysis of an ultrashort optical cross-bar switch based on a graphene plasmonic coupler. J Lightwave Technol 35(11):2211–2217
Zheng P, Yang H, Fan M, Hu G, Zhang R, Yun B, Cui Y (2018) A hybrid plasmonic modulator based on graphene on channel plasmonic polariton waveguide. Plasmonics. https://doi.org/10.1007/s11468-018-0719-1
Krishnamurthy V, Chen Y, Wang Q (2014) MZI-semiconductor-based all-optical switch with switching gain. J Lightwave Technol 32(13):2433–2439
Shcherbakov MR, Vabishchevich PP, Shorokhov AS, Chong KE, Choi DY, Staude I, Miroshnichenko AE, Neshev DN, Fedyanin AA, Kivshar YS (2015) Ultrafast all-optical switching with magnetic resonances in nonlinear dielectric nanostructures. Nano Lett 15(10):6985–6990
Li W, Chen B, Meng C, Fang W, Xiao Y, Li X, Hu Z, Xu Y, Tong L, Wang H, Liu W, Bao J, Shen YR (2014) Ultrafast all-optical graphene modulator. Nano Lett 14(2):955–959
Li J, Tao J, Chen ZH, Huang XG (2016) All-optical controlling based on nonlinear graphene plasmonic waveguides. Opt Express 24(19):22169–22176
Akyildiz IF, Jornet JM, Han C (2014) Terahertz band: next frontier for wireless communications. Phys Commun 12:16–32
Krasavin AV, Zayats AV (2010) Silicon-based plasmonic waveguides. Opt Express 18(11):11791–11799
Zenin VA, Choudhury S, Saha S, Shalaev VM, Boltasseva A, Bozhevolnyi SI (2017) Hybrid plasmonic waveguides formed by metal coating of dielectric ridges. Opt Express 25(11):12295–12302
Ooi KJA, Chu HS, Ang LK, Bai P (2013) Mid-infrared active graphene nanoribbon plasmonic waveguide devices. J Opt Soc Am B 30(12):3111–3116
He S, Zhang X, He Y (2013) Graphene nano-ribbon waveguides of record-small mode area and ultra-high effective refractive indices for future VLSI. Opt Express 21(25):30664–30673
Christensen J, Manjavacas A, Thongrattanasiri S, Koppens FHL, de Abajo FJG (2012) Graphene plasmon waveguiding and hybridization in individual and paired nanoribbons. ACS Nano 6(1):431–440
Zheng J, Yu L, He S, Dai D (2015) Tunable pattern-free graphene nanoplasmonic waveguides on trenched silicon substrate. Sci Rep 5:7987
Xu W, Zhu ZH, Liu K, Zhang JF, Yuan XD, Lu QS, Qin SQ (2015) Dielectric loaded graphene plasmon waveguide. Opt Express 23(4):5147–5153
Du X, Skachko I, Barker A, Andrei EY (2008) Approaching ballistic transport in suspended graphene. Nat Nanotechnol 3:491–495
Bolotin KI, Sikes KJ, Jiang Z, Klima M, Fudenberg G, Hone J, Kim P, Stormer HL (2008) Ultrahigh electron mobility in suspended graphene. Solid State Commun 146(9):351–355
Chen JH, Jang C, Xiao S, Ishigami M, Fuhrer MS (2008) Intrinsic and extrinsic performance limits of graphene devices on SiO2. Nat Nanotechnol 3:206–209
Lv H, Wu H, Liu J, Yu J, Niu J, Li J, Xu Q, Wu X, Qian H (2013) High carrier mobility in suspended-channel graphene field effect transistors. Appl Phys Lett 103:193102
Freitag M, Low T, Avouris P (2013) Increased responsivity of suspended graphene photodetectors. Nano Lett 13(4):1644–1648
Patil V, Capone A, Strauf S, Yang EH (2013) Improved photoresponse with enhanced photoelectric contribution in fully suspended graphene photodetectors. Sci Rep 3:2791
Bahadori-Haghighi S, Ghayour R, Sheikhi MH (2018) Design and analysis of low loss plasmonic waveguide and directional coupler based on pattern-free suspended graphene sheets. Carbon 129:653–660
Nuzaihan M, Hashim U, Arshad MKM et al (2016) Top-down nanofabrication and characterization of 20 nm silicon nanowires for biosensing applications. PLoS One 11:0152318
Cardenas J, Poitras CB, Robinson JT, Preston K, Chen L, Lipson M (2009) Low loss etchless silicon photonic waveguides. Opt Express 17:4752–4757
Li P, Chen C, Zhang J, Li S, Sun B, Bao Q (2014) Graphene-based transparent electrodes for hybrid solar cells. Front Mater 1:26
Xu W, Zhu ZH, Liu K, Zhang JF, Yuan XD, Lu QS, Qin SQ (2015) Toward integrated electrically controllable directional coupling based on dielectric loaded graphene plasmonic waveguide. Opt Lett 40(7):1603–1606
Qi Z, Zhu Z, Xu W, Zhang J, Guo C, Liu K, Yuan X, Qin S (2016) Electrically tuneable directional coupling and switching based on multimode interference effect in dielectric loaded graphene plasmon waveguides. J Opt 18(6):1–5
Jiang L, Guo J, Wu L, Dai X, Xiang Y (2015) Manipulating the optical bistability at terahertz frequency in the Fabry-Perot cavity with graphene. Opt Express 23(24):31181–31191
Jablan M, Buljan H, Soljačić M (2009) Plasmonics in graphene at infrared frequencies. Phys Rev B 80:245435
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Bahadori-Haghighi, S., Ghayour, R. & Sheikhi, M.H. All-Optical Cross-Bar Switch Based on a Low-Loss Suspended Graphene Plasmonic Coupler. Plasmonics 14, 447–456 (2019). https://doi.org/10.1007/s11468-018-0823-2
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DOI: https://doi.org/10.1007/s11468-018-0823-2