Graphene-based tunable reflector superstructure grating

We propose graphene–silicon superstructure grating which gives tunable and broadband response. The graphene sections are interleaved with silicon material to create superstructure grating. The proposed structure is tunable over 1–6 THz frequency range. Proposed grating structure is actively tunable with graphene chemical potential. Transmittance, reflectance and electric field intensity responses are presented in this paper for different graphene chemical potentials and angles. Grating structure is also analyzed for different geometry parameters like grating period and a number of graphene gratings. It is observed that better grating response is achieved for higher chemical potential. Proposed tunable graphene structure can be used as a basic building block of several infrared frequency devices.

[1]  Zhuomin M. Zhang,et al.  Enhancement of near-infrared absorption in graphene with metal gratings , 2014 .

[2]  David J. Webb,et al.  Fiber Bragg Grating Sensors: Recent Advancements, Industrial Applications and Market Exploitation , 2018 .

[3]  S. Jian,et al.  Graphene based silicon–air grating structure to realize electromagnetically-induced-transparency and slow light effect , 2017 .

[4]  Fei Fan,et al.  Broadband controllable terahertz quarter-wave plate based on graphene gratings with liquid crystals. , 2018, Optics express.

[5]  Shobhit K. Patel,et al.  Graphene based tunable grating structure , 2018, Materials Research Express.

[6]  Shobhit K. Patel,et al.  Graphene based tunable broadband far-infrared absorber , 2018, Superlattices and Microstructures.

[7]  Shobhit K. Patel,et al.  Directive and tunable graphene based optical leaky wave radiating structure , 2019, Materials Research Express.

[8]  P. Yan,et al.  Enhancement of broad-band light absorption in monolayer MoS 2 using Ag grating hybrid with distributed Bragg reflector , 2017 .

[9]  L. Falkovsky,et al.  Optical properties of graphene , 2008, 0806.3663.

[10]  D. Krohn,et al.  Fiber Optic Sensors: Fundamentals and Applications , 1988 .

[11]  Ke Xu,et al.  High-responsivity graphene/silicon-heterostructure waveguide photodetectors , 2013, Nature Photonics.

[12]  Lin Chen,et al.  Plasmonic rainbow trapping by a graphene monolayer on a dielectric layer with a silicon grating substrate. , 2013, Optics express.

[13]  Waveguide second-harmonic generation device with broadened flat quasi-phase-matching response by use of a grating structure with located phase shifts. , 1998, Optics letters.

[14]  T. Ning,et al.  Enhanced third harmonic generation from graphene embedded in dielectric resonant waveguide gratings , 2019, Optics Communications.

[15]  Ruifeng Kan,et al.  Graphene Heterostructure Integrated Optical Fiber Bragg Grating for Light Motion Tracking and Ultrabroadband Photodetection from 400 nm to 10.768 µm , 2019, Advanced Functional Materials.

[16]  T. Naseri,et al.  Realization of electromagnetically induced phase grating and Kerr nonlinearity in a graphene ensemble under Raman excitation , 2017 .

[17]  Li Chen,et al.  High-efficiency three-port beam splitter of reflection grating with a metal layer , 2015 .

[18]  E. Gu,et al.  Luminous enhancement of nitride light-emitting diodes by localized surface plasmon and triangular structure , 2018, Superlattices and Microstructures.

[19]  T. Bunning,et al.  Chirped POLICRYPS gratings containing self-aligning liquid crystals , 2017 .

[20]  Peter Uhd Jepsen,et al.  Experimental observation of plasmons in a graphene monolayer resting on a two-dimensional subwavelength silicon grating , 2013, 1301.3250.

[21]  P. Ajayan,et al.  Excitation and active control of propagating surface plasmon polaritons in graphene. , 2013, Nano letters.

[22]  Pei Wang,et al.  All-optical switching in subwavelength metallic grating structure containing nonlinear optical materials. , 2008, Optics letters.

[23]  K. V. Sreekanth,et al.  Excitation of surface electromagnetic waves in a graphene-based Bragg grating , 2012, Scientific Reports.

[24]  Clinton Randy Giles,et al.  Lightwave applications of fiber Bragg gratings , 1997 .

[25]  L. Falkovsky,et al.  Optical far-infrared properties of a graphene monolayer and multilayer , 2007, 0707.1386.

[26]  J. Zhang,et al.  Optical absorption of suspended graphene based metal plasmonic grating in the visible range , 2018 .

[27]  Yuzhi Chen,et al.  Theoretical Design of Mid-Infrared Graphene Optical Gas Sensor Based on Slot Si Core Fiber , 2019, IEEE Photonics Technology Letters.

[28]  X. Ren,et al.  Enhanced absorption of graphene strips with a multilayer subwavelength grating structure , 2014 .

[29]  A. Othonos.  Fiber Bragg gratings , 1999 .

[30]  Ali Farmani,et al.  Design of a tunable graphene plasmonic-on-white graphene switch at infrared range , 2017 .

[31]  Xueming Liu,et al.  Graphene-based active slow surface plasmon polaritons , 2015, Scientific Reports.

[32]  H. Meng,et al.  Tunable graphene-based mid-infrared plasmonic multispectral and narrow band-stop filter , 2018 .

[33]  P. Yan,et al.  Enhanced optical absorption of monolayer WS 2 using Ag nanograting and distributed Bragg reflector structures , 2017 .

[34]  Peiguo Liu,et al.  Controlling light absorption and transmission in graphene-embedded structure with Fano resonance and FP resonance , 2018, Superlattices and Microstructures.

[35]  Shobhit K. Patel,et al.  Graphene-silicon hybrid chirped-superstructure bragg gratings for far infrared frequency , 2019, Materials Research Express.

[36]  Yujie J. Ding,et al.  Ultrawide-bandwidth slow-light system based on THz plasmonic graded metallic grating structures. , 2008, Physical review letters.

[37]  Yunjiang Rao,et al.  Graphene-coated microfiber Bragg grating for high-sensitivity gas sensing. , 2014, Optics letters.

[38]  Jicheng Wang,et al.  Sensitive perfect absorber with monolayer graphene-based multi-layer dielectric grating structure , 2018 .

[39]  Fabry–Pérot resonance coupling associated exceptional points in a composite grating structure , 2018 .

[40]  Yong Zhao,et al.  Review on the graphene based optical fiber chemical and biological sensors , 2016 .

[41]  Peiguo Liu,et al.  Near-unity absorption in a graphene-embedded defective photonic crystals array , 2017 .

[42]  B. Rezaei,et al.  Manipulation of Bragg and graphene photonic band gaps in one-dimensional photonic crystal containing graphene , 2019, Optik.