1
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Tao L, Deng XH, Zhang P, Lu M, Yuan J. Multifunctional graphene metamaterials based on polarization-insensitive plasmon-induced transparency. OPTICS EXPRESS 2024; 32:2097-2105. [PMID: 38297746 DOI: 10.1364/oe.512302] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/24/2023] [Accepted: 12/23/2023] [Indexed: 02/02/2024]
Abstract
In this paper, a 4L-shaped graphene patterned polarization-insensitive plasmon-induced transparency (PIT) metamaterial structure is proposed. The photoelectric switch based on this structure supports a variety of light sources, such as linearly polarized light with different polarization directions, left rotation circularly polarized light (LCP) and right rotation circularly polarized light (RCP). And the switch has excellent performance in the case of different light sources, the amplitude modulation is as high as 99.01%, and the insertion loss is as low as 0.04 dB. In addition, the PIT metamaterial has a high refractive index sensitivity of up to 49156 nm/RIU. The group index of the PIT metamaterial is as high as 980, which can achieve excellent slow light effect. This study provides a scheme and guidance for the design of optoelectronic devices.
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2
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Chen Z, Ma X, Duan Y, Li L, Zhang S, Wang Y, Yu Y, Hou Z. Tunable electromagnetically induced absorption based on coupled-resonators in a compact plasmonic system. OPTICS EXPRESS 2023; 31:35697-35708. [PMID: 38017735 DOI: 10.1364/oe.499706] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/04/2023] [Accepted: 09/26/2023] [Indexed: 11/30/2023]
Abstract
Electromagnetically induced absorption (EIA) exhibits abnormal dispersion and novel fast-light features, making it a crucial aspect of nanophotonics. Here, the EIA phenomenon is numerically predicted in a compact plasmonic waveguide system by introducing a slot resonator above a square cavity. Simulation results reveal that the EIA response can be easily tuned by altering the structure's parameters, and double EIA valleys can be observed with an additional slot resonator. Furthermore, the investigated structures demonstrate a fast-light effect with an optical delay of ∼ -1.0 ps as a result of aberrant dispersion at the EIA valley, which enable promising applications in the on-chip fast-light area. Finally, a plasmonic nanosensor with a sensitivity of ∼1200 nm/RIU and figure of merit of ∼16600 is achieved based on Fano resonance. The special features of our suggested structure are applicable in realization of various integrated components for the development of multifunctional high-performance nano-photonic devices.
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3
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Zhang Z, Feng H, Fang D, Wang J, Zhang J, Liu C, Wang G, Wang L, Ran L, Gao Y. Ultra-efficient diamond plasmonic band-stop filter with enhanced effect. APPLIED OPTICS 2022; 61:7644-7652. [PMID: 36256364 DOI: 10.1364/ao.465299] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/30/2022] [Accepted: 08/09/2022] [Indexed: 06/16/2023]
Abstract
In this paper, a band-stop filter based on a surface plasmon polariton metal-insulator-metal is designed and studied. The relationship between wavelength and filter transmittance is simulated using the finite difference time domain method and coupled mode theory. Compared with a single-diamond resonator, the minimum transmittances of the double-diamond resonator and double-rectangular resonator at a fixed wavelength are increased by 11.33% and 14.25%, respectively, achieving an enhancement effect. The research results also show that the sensitivity of the filter can reach 860 nm/RIU. The structure has good application prospects in optical integration, optical communication, and optical information processing.
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4
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Mao M, Wang J, Mu K, Fan C, Jia Y, Li R, Chen S, Liang E. Realizing PIT-like transparency via the coupling of plasmonic dipole and ENZ modes. OPTICS EXPRESS 2022; 30:8474-8481. [PMID: 35299299 DOI: 10.1364/oe.450423] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/03/2021] [Accepted: 02/07/2022] [Indexed: 06/14/2023]
Abstract
Plasmon induced transparency (PIT), known as the coupling of plasmon modes in metamaterials, has attracted intensive research interests in photonic applications. In this work, a PIT-like transparency is realized via the strong coupling of plasmonic dipole and epsilon-near-zero (ENZ) mode. Two types of metasurfaces, namely the gold nanoantenna and dolmen-like metasurface, are designed with an integrated ENZ material aluminum doped zinc oxide (AZO) film. Simulations with the finite element method (FEM) demonstrate that single and double transparent windows are achieved respectively. The adjustments of the peak position and transmittance of transparent windows via the structure parameters and the AZO film thickness are further investigated. This work provides an alternative coupling scheme of realizing PIT-like transparency with simple metasurface design, and offers great potential for future metamaterial applications.
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5
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He Y, Zhang J, Xu W, Guo C, Liu K, Yuan X, Zhu Z. Graphene plasmonically induced analogue of tunable electromagnetically induced transparency without structurally or spatially asymmetry. Sci Rep 2019; 9:20312. [PMID: 31889081 PMCID: PMC6937333 DOI: 10.1038/s41598-019-56745-9] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/14/2019] [Accepted: 12/10/2019] [Indexed: 11/18/2022] Open
Abstract
Electromagnetically induced transparency (EIT) arises from the coherent coupling and interference between a superradiant (bright) mode in one resonator and a subradiant (dark) mode in an adjacent resonator. Generally, the two adjacent resonators are structurally or spatially asymmetric. Here, by numerical simulation, we demonstrate that tunable EIT can be induced by graphene ribbon pairs without structurally or spatially asymmetry. The mechanism originates from the fact that the resonate frequencies of the bright mode and the dark mode supported by the symmetrical graphene ribbon pairs can be respectively tuned by electrical doping levels, and when they are tuned to be equal the graphene plasmon coupling and interference occurs. The EIT in symmetrical nanostructure which avoids deliberately breaking the element symmetry in shape as well as in size facilitates the design and fabrication of the structure. In addition, the work regarding to EIT in the structurally symmetric could provide a fresh contribution to a more comprehensive physical understanding of Fano resonance.
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Affiliation(s)
- Yuwen He
- College of Advanced Interdisciplinary Studies, National University of Defense Technology, Changsha, 410073, People's Republic of China
| | - Jianfa Zhang
- College of Advanced Interdisciplinary Studies, National University of Defense Technology, Changsha, 410073, People's Republic of China
| | - Wei Xu
- College of Advanced Interdisciplinary Studies, National University of Defense Technology, Changsha, 410073, People's Republic of China
| | - Chucai Guo
- College of Advanced Interdisciplinary Studies, National University of Defense Technology, Changsha, 410073, People's Republic of China
| | - Ken Liu
- College of Advanced Interdisciplinary Studies, National University of Defense Technology, Changsha, 410073, People's Republic of China
| | - Xiaodong Yuan
- College of Advanced Interdisciplinary Studies, National University of Defense Technology, Changsha, 410073, People's Republic of China
| | - Zhihong Zhu
- College of Advanced Interdisciplinary Studies, National University of Defense Technology, Changsha, 410073, People's Republic of China.
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6
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Wang Q, Yu L, Gao H, Chu S, Peng W. Electromagnetically induced transparency in an all-dielectric nano-metamaterial for slow light application. OPTICS EXPRESS 2019; 27:35012-35026. [PMID: 31878678 DOI: 10.1364/oe.27.035012] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/21/2019] [Accepted: 11/08/2019] [Indexed: 06/10/2023]
Abstract
Slow light technique has significant potential applications in many contemporary photonic device developments for integrated all-optical circuit, such as buffers, regenerators, switches and interferometers. In this paper, we present an efficient coupling mechanism of an electromagnetically induced transparency like (EIT-like) effect in an all-dielectric nano-metamaterial. This EIT-like effect is generated by destructive interference between a radiative Fabry-Perot (FP) mode and a dark waveguide (WG) mode, which is based on a combined structure of a dielectric grating and multilayer films. The dark WG mode is excited by guided mode of dielectric grating instead of radiative FP mode. In analogy to the molecular transition process, the FP mode, guided mode and WG mode are denoted by excited states of |1〉, |2〉 and |3〉. The two coupling pathways of the EIT-like effect in our metamaterial are |0〉 → |1〉 and |0〉 → |2〉 → |3〉 → |1〉, where |0〉 is the ground state. The simulated resonant wavelength of WG mode is consistent with theoretical result. We further confirm this EIT-like effect through a two-oscillator coupling analysis. We achieve a group refractive index of 913.6 by adjusting these two modes coupling of the EIT-like effect, which is useful for developing slow light device. This work provides a valuable solution to realize electromagnetically induced transparency in all-dielectric nanomaterial.
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Sun Y, Xia J, Sun H, Yuan S, Ge Y, Liu X. Dual-Band Fano Resonance of Low-Frequency Sound Based on Artificial Mie Resonances. ADVANCED SCIENCE (WEINHEIM, BADEN-WURTTEMBERG, GERMANY) 2019; 6:1901307. [PMID: 31637167 PMCID: PMC6794620 DOI: 10.1002/advs.201901307] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/30/2019] [Revised: 08/10/2019] [Indexed: 06/01/2023]
Abstract
It is reported both experimentally and numerically that dual-band acoustic Fano resonances (AFRs) of low-frequency sound are realized by a compound unit array composed of two types of multiple-cavity unit cells with different inner radii. Eigenmode analyses show that two types of monopolar Mie resonance (MMR) modes can be observed below 650 Hz, which arise from the coupling resonance of the overall structure and the Helmholtz resonance of each resonance cavity, respectively. Based on the MMRs with the out-of-phase characteristic induced by the mutual coupling of the two types of unit cells, the dual-band AFRs, in which the quality factor of the AFR II can exceed 600 when the ratio of the inner radii is closed to 1.0, can be observed. More interestingly, the application of the dual-band AFRs in sound encryption communication is further discussed. The proposed multiple-cavity unit cell and its associated dual-band AFRs provide diverse routes to design multiband sound devices with versatile applications, such as filtering, sensing, and communication.
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Affiliation(s)
- Ye‐Yang Sun
- Research Center of Fluid Machinery Engineering and TechnologyFaculty of ScienceJiangsu UniversityZhenjiang212013China
| | - Jian‐Ping Xia
- Research Center of Fluid Machinery Engineering and TechnologyFaculty of ScienceJiangsu UniversityZhenjiang212013China
| | - Hong‐Xiang Sun
- Research Center of Fluid Machinery Engineering and TechnologyFaculty of ScienceJiangsu UniversityZhenjiang212013China
- State Key Laboratory of AcousticsInstitute of AcousticsChinese Academy of SciencesBeijing100190China
| | - Shou‐Qi Yuan
- Research Center of Fluid Machinery Engineering and TechnologyFaculty of ScienceJiangsu UniversityZhenjiang212013China
| | - Yong Ge
- Research Center of Fluid Machinery Engineering and TechnologyFaculty of ScienceJiangsu UniversityZhenjiang212013China
| | - Xiao‐Jun Liu
- State Key Laboratory of AcousticsInstitute of AcousticsChinese Academy of SciencesBeijing100190China
- Key Laboratory of Modern AcousticsDepartment of Physics and Collaborative Innovation Center of Advanced MicrostructuresNanjing UniversityNanjing210093China
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8
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Zhang M, Wang Z. Analytical method for metal-insulator-metal surface plasmon polaritons waveguide networks. OPTICS EXPRESS 2019; 27:303-321. [PMID: 30645376 DOI: 10.1364/oe.27.000303] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/12/2018] [Accepted: 11/23/2018] [Indexed: 06/09/2023]
Abstract
Metal-insulator-metal (MIM) surface plasmon polaritons (SPPs) waveguides with side-coupled resonators have been widely studied through various approaches. However, few methods are both physically transparent and complete. Here, an analytical approach, which is based on the Green's function method, is developed in order to investigate electromagnetic wave transmission across SPPs MIM waveguide networks. The proposed method is applied in order to model different MIM-waveguide geometries with weakly-coupled side stubs, comparing to the geometries with strongly-coupled stubs. The weak coupling between the backbone and stubs is taken into account by the electromagnetic field leakage at metal-insulator interface. Analytical expressions for transmittance in cases of single stub and cavity are obtained straightforwardly. Our method shows excellent computational efficiency in contrast with solving Maxwell equations numerically.
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9
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Zhang T, Gao S, Cheng Y, Liu X. Modulating acoustic Fano resonance of self-collimated sound beams in two dimensional sonic crystals. ULTRASONICS 2019; 91:129-133. [PMID: 30107288 DOI: 10.1016/j.ultras.2018.08.001] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/25/2018] [Revised: 06/11/2018] [Accepted: 08/03/2018] [Indexed: 06/08/2023]
Abstract
Controlling the lineshape of Fano resonance has great potential applications. Here we propose a type of acoustic Fano resonator, which is composed of a multi-layer zigzag line defects (ZLDs) sandwiched by double-layer zigzag steel rods in two-dimensional sonic crystals (SCs). We have theoretically and experimentally observed the asymmetric Fano resonances caused by the interference between the resonant and propagating self-collimated acoustic waves. It is demonstrated that the resonance dip frequency and Fano profile can be modulated by adjusting the structure parameters of the SC-based resonator. Our finding provides an efficient approach to manipulate sound propagation for future acoustic devices.
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Affiliation(s)
- Ting Zhang
- Key Laboratory of Modern Acoustics, Department of Physics and Collaborative Innovation Center of Advanced Microstructures, Nanjing University, Nanjing 210093, China; School of Electronic & Information Engineering, Nanjing University of Information Science & Technology, Nanjing 210044, China
| | - ShuXiang Gao
- Key Laboratory of Modern Acoustics, Department of Physics and Collaborative Innovation Center of Advanced Microstructures, Nanjing University, Nanjing 210093, China
| | - Ying Cheng
- Key Laboratory of Modern Acoustics, Department of Physics and Collaborative Innovation Center of Advanced Microstructures, Nanjing University, Nanjing 210093, China; State Key Laboratory of Acoustics, Chinese Academy of Sciences, Beijing 100190, China.
| | - XiaoJun Liu
- Key Laboratory of Modern Acoustics, Department of Physics and Collaborative Innovation Center of Advanced Microstructures, Nanjing University, Nanjing 210093, China; State Key Laboratory of Acoustics, Chinese Academy of Sciences, Beijing 100190, China.
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10
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Liu H, Tan J, Liu P, Bian LA, Zha S. Tunable Coupled-Resonator-Induced Transparency in a Photonic Crystal System Based on a Multilayer-Insulator Graphene Stack. MATERIALS 2018; 11:ma11102042. [PMID: 30347754 PMCID: PMC6213410 DOI: 10.3390/ma11102042] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 09/18/2018] [Revised: 10/16/2018] [Accepted: 10/17/2018] [Indexed: 11/16/2022]
Abstract
We achieve the effective modulation of coupled-resonator-induced transparency (CRIT) in a photonic crystal system which consists of photonic crystal waveguide (PCW), defect cavities, and a multilayer graphene-insulator stack (MGIS). Simulation results show that the wavelength of transparency window can be effectively tuned through varying the chemical potential of graphene in MGIS. The peak value of the CRIT effect is closely related to the structural parameters of our proposed system. Tunable Multipeak CRIT is also realized in the four-resonator-coupled photonic crystal system by modulating the chemical potentials of MGISs in different cavity units. This system paves a novel way toward multichannel-selective filters, optical sensors, and nonlinear devices.
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Affiliation(s)
- Hanqing Liu
- College of Electronic Science and Engineering, National University of Defense Technology, Changsha 410073, China.
| | - Jianfeng Tan
- College of Electronic Science and Engineering, National University of Defense Technology, Changsha 410073, China.
| | - Peiguo Liu
- College of Electronic Science and Engineering, National University of Defense Technology, Changsha 410073, China.
| | - Li-An Bian
- School of Physical and Electronic Science, Changsha University of Science and Technology, Changsha 410114, China.
| | - Song Zha
- College of Electronic Science and Engineering, National University of Defense Technology, Changsha 410073, China.
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11
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Zhang Z, Yang J, He X, Han Y, Zhang J, Huang J, Chen D, Xu S. Active Enhancement of Slow Light Based on Plasmon-Induced Transparency with Gain Materials. MATERIALS 2018; 11:ma11060941. [PMID: 29865283 PMCID: PMC6024905 DOI: 10.3390/ma11060941] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 05/08/2018] [Revised: 05/27/2018] [Accepted: 05/31/2018] [Indexed: 11/16/2022]
Abstract
As a plasmonic analogue of electromagnetically induced transparency (EIT), plasmon-induced transparency (PIT) has drawn more attention due to its potential of realizing on-chip sensing, slow light and nonlinear effect enhancement. However, the performance of a plasmonic system is always limited by the metal ohmic loss. Here, we numerically report a PIT system with gain materials based on plasmonic metal-insulator-metal waveguide. The corresponding phenomenon can be theoretically analyzed by coupled mode theory (CMT). After filling gain material into a disk cavity, the system intrinsic loss can be compensated by external pump beam, and the PIT can be greatly fueled to achieve a dramatic enhancement of slow light performance. Finally, a double-channel enhanced slow light is introduced by adding a second gain disk cavity. This work paves way for a potential new high-performance slow light device, which can have significant applications for high-compact plasmonic circuits and optical communication.
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Affiliation(s)
- Zhaojian Zhang
- College of Liberal Arts and Sciences, National University of Defense Technology, Changsha 410073, China.
| | - Junbo Yang
- Center of Material Science, National University of Defense Technology, Changsha 410073, China.
| | - Xin He
- Center of Material Science, National University of Defense Technology, Changsha 410073, China.
| | - Yunxin Han
- Center of Material Science, National University of Defense Technology, Changsha 410073, China.
| | - Jingjing Zhang
- College of Liberal Arts and Sciences, National University of Defense Technology, Changsha 410073, China.
| | - Jie Huang
- College of Liberal Arts and Sciences, National University of Defense Technology, Changsha 410073, China.
| | - Dingbo Chen
- College of Liberal Arts and Sciences, National University of Defense Technology, Changsha 410073, China.
| | - Siyu Xu
- College of Liberal Arts and Sciences, National University of Defense Technology, Changsha 410073, China.
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12
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Lin Q, Zhai X, Su Y, Meng H, Wang L. Tunable plasmon-induced absorption in an integrated graphene nanoribbon side-coupled waveguide. APPLIED OPTICS 2017; 56:9536-9541. [PMID: 29216070 DOI: 10.1364/ao.56.009536] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/22/2017] [Accepted: 10/30/2017] [Indexed: 06/07/2023]
Abstract
By designing a novel graphene plasmonic band-pass filter with two gold ribbons, we have numerically and analytically investigated the transmission properties of plasmon-induced absorption (PIA) in a compact graphene nanoribbon side-coupled waveguide. The formation and evolution of the PIA window are dependent on the superposition of super resonances and the near-field coupling intensity between the designed two resonators. Interestingly, the induced absorption window not only can be engineered longitudinally in intensity, but also dynamically tuned horizontally in the resonant wavelength by changing the Fermi energy of the graphene layers. Optical time delay near 1.0 ps can be realized in the PIA window, which exhibits excellent slow light features. Double PIA resonance is also discussed. This result may have potential applications in graphene plasmonic switching and buffering.
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13
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Qiu P, Qiu W, Lin Z, Chen H, Ren J, Wang JX, Kan Q, Pan JQ. Dynamically Tunable Plasmon-Induced Transparency in On-chip Graphene-Based Asymmetrical Nanocavity-Coupled Waveguide System. NANOSCALE RESEARCH LETTERS 2017; 12:374. [PMID: 28549379 PMCID: PMC5445039 DOI: 10.1186/s11671-017-2148-z] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/09/2017] [Accepted: 05/15/2017] [Indexed: 05/16/2023]
Abstract
A graphene-based on-chip plasmonic nanostructure composed of a plasmonic bus waveguide side-coupled with a U-shaped and a rectangular nanocavities has been proposed and modeled by using the finite element method in this paper. The dynamic tunability of the plasmon-induced transparency (PIT) windows has been investigated. The results reveal that the PIT effects can be tuned via modifying the chemical potential of the nanocavities and plasmonic bus waveguide or by varying the geometrical parameters including the location and width of the rectangular nanocavity. Further, the proposed plasmonic nanostructure can be used as a plasmonic refractive index sensor with a sensing sensibility of 333.3 nm/refractive index unit (RIU) at the the PIT transmission peak. Slow light effect is also realized in the PIT system. The proposed nanostructure may pave a new way towards the realization of graphene-based on-chip integrated nanophotonic devices.
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Affiliation(s)
- Pingping Qiu
- Fujian Key Laboratory of Light Propagation and Transformation, College of Information Science and Engineering, Huaqiao University, Xiamen, 361021, China
| | - Weibin Qiu
- Fujian Key Laboratory of Light Propagation and Transformation, College of Information Science and Engineering, Huaqiao University, Xiamen, 361021, China.
| | - Zhili Lin
- Fujian Key Laboratory of Light Propagation and Transformation, College of Information Science and Engineering, Huaqiao University, Xiamen, 361021, China
| | - Houbo Chen
- Fujian Key Laboratory of Light Propagation and Transformation, College of Information Science and Engineering, Huaqiao University, Xiamen, 361021, China
| | - Junbo Ren
- Fujian Key Laboratory of Light Propagation and Transformation, College of Information Science and Engineering, Huaqiao University, Xiamen, 361021, China
| | - Jia-Xian Wang
- Fujian Key Laboratory of Light Propagation and Transformation, College of Information Science and Engineering, Huaqiao University, Xiamen, 361021, China
| | - Qiang Kan
- Institute of Semiconductors, Chinese Academy of Sciences, 35A, Qinghua East Road, Haidian District, Beijing, 100086, China
| | - Jiao-Qing Pan
- Institute of Semiconductors, Chinese Academy of Sciences, 35A, Qinghua East Road, Haidian District, Beijing, 100086, China
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14
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Jiang M, Qi J, Zhang M, Sun Q, Chen J, Chen Z, Yu X, Li Y, Tian J. Ultra-high quality factor metallic micro-cavity based on concentric double metal-insulator-metal rings. Sci Rep 2017; 7:15663. [PMID: 29142234 PMCID: PMC5688107 DOI: 10.1038/s41598-017-15906-4] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/29/2017] [Accepted: 11/02/2017] [Indexed: 11/09/2022] Open
Abstract
We propose and numerically investigate a novel ultra-high quality (Q) factor metallic micro-cavity based on concentric double metal-insulator-metal (MIM) rings (CDMR). In this CDMR cavity, because of the angular momentum matching, the strong coupling occurs between the same order modes of the inner and outer rings with huge resonance frequency difference. Consequently, the energy distribution between in the inner and outer rings presents enormous difference. Especially, for the quasi-in-phase CDMR modes, the energy is confined in the inner ring mainly, which suppresses the radiation loss greatly and results in ultra-narrow resonance dips and ultra-high Q factors. The full width at half-maximum (FWHM) of this CDMR cavity can be less than 2 nm and the Q factor can be higher than 300. Moreover, the character of this CDMR metallic micro-cavity can be modulated by varying the gap width between the two MIM rings. Our CDMR metallic micro-cavity provides a new perspective to design the advanced optical cavity with high Q factor and small mode volumes.
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Affiliation(s)
- Meiling Jiang
- MOE Key Laboratory of Weak Light Nonlinear Photonics, Tianjin Key Laboratory of Photonics and Technology of Information Science, School of Physics, Nankai University, Tianjin, 300071, China
| | - Jiwei Qi
- MOE Key Laboratory of Weak Light Nonlinear Photonics, Tianjin Key Laboratory of Photonics and Technology of Information Science, School of Physics, Nankai University, Tianjin, 300071, China. .,Collaborative Innovation Center of Extreme Optics, Shanxi University, Taiyuan, Shanxi, 030006, China.
| | - Mingsi Zhang
- MOE Key Laboratory of Weak Light Nonlinear Photonics, Tianjin Key Laboratory of Photonics and Technology of Information Science, School of Physics, Nankai University, Tianjin, 300071, China
| | - Qian Sun
- MOE Key Laboratory of Weak Light Nonlinear Photonics, Tianjin Key Laboratory of Photonics and Technology of Information Science, School of Physics, Nankai University, Tianjin, 300071, China.,Collaborative Innovation Center of Extreme Optics, Shanxi University, Taiyuan, Shanxi, 030006, China
| | - Jing Chen
- MOE Key Laboratory of Weak Light Nonlinear Photonics, Tianjin Key Laboratory of Photonics and Technology of Information Science, School of Physics, Nankai University, Tianjin, 300071, China
| | - Zongqiang Chen
- MOE Key Laboratory of Weak Light Nonlinear Photonics, Tianjin Key Laboratory of Photonics and Technology of Information Science, School of Physics, Nankai University, Tianjin, 300071, China
| | - Xuanyi Yu
- MOE Key Laboratory of Weak Light Nonlinear Photonics, Tianjin Key Laboratory of Photonics and Technology of Information Science, School of Physics, Nankai University, Tianjin, 300071, China.,Collaborative Innovation Center of Extreme Optics, Shanxi University, Taiyuan, Shanxi, 030006, China
| | - Yudong Li
- MOE Key Laboratory of Weak Light Nonlinear Photonics, Tianjin Key Laboratory of Photonics and Technology of Information Science, School of Physics, Nankai University, Tianjin, 300071, China. .,Collaborative Innovation Center of Extreme Optics, Shanxi University, Taiyuan, Shanxi, 030006, China.
| | - Jianguo Tian
- MOE Key Laboratory of Weak Light Nonlinear Photonics, Tianjin Key Laboratory of Photonics and Technology of Information Science, School of Physics, Nankai University, Tianjin, 300071, China.,Collaborative Innovation Center of Extreme Optics, Shanxi University, Taiyuan, Shanxi, 030006, China
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15
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Zhong N, Dai Q, Liang R, Li X, Tan X, Zhang X, Wei Z, Wang F, Liu H, Meng H. Analogue of electromagnetically induced absorption with double absorption windows in a plasmonic system. PLoS One 2017; 12:e0179609. [PMID: 28662059 PMCID: PMC5491032 DOI: 10.1371/journal.pone.0179609] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/20/2017] [Accepted: 06/01/2017] [Indexed: 11/19/2022] Open
Abstract
We report the observation of an analog of double electromagnetically induced absorption (EIA) in a plasmonic system consisting of two disk resonators side-coupled to a discrete metal-insulator-metal (MIM) waveguide. The finite-difference time-domain (FDTD) simulation calculations show that two absorption windows are obtained and can be easily tuned by adjusting the parameters of the two resonance cavities. The consistence between the coupled-model theory and FDTD simulation results verify the feasibility of the proposed system. Since the scheme is easy to be fabricated, our proposed configuration may thus be applied to narrow-band filtering, absorptive switching, and absorber applications.
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Affiliation(s)
- Nianfa Zhong
- Guangzhou Key Laboratory for Special Fiber Photonic Devices, School of Information and Optoelectronic Science and Engineering, South China Normal University, Guangdong, China
| | - Qiaofeng Dai
- Guangzhou Key Laboratory for Special Fiber Photonic Devices, School of Information and Optoelectronic Science and Engineering, South China Normal University, Guangdong, China
- * E-mail: (QFD); (ZCW)
| | - Ruisheng Liang
- Guangzhou Key Laboratory for Special Fiber Photonic Devices, School of Information and Optoelectronic Science and Engineering, South China Normal University, Guangdong, China
| | - Xianping Li
- Guangzhou Key Laboratory for Special Fiber Photonic Devices, School of Information and Optoelectronic Science and Engineering, South China Normal University, Guangdong, China
| | - Xiaopei Tan
- Guangzhou Key Laboratory for Special Fiber Photonic Devices, School of Information and Optoelectronic Science and Engineering, South China Normal University, Guangdong, China
| | - Xiaomeng Zhang
- Guangzhou Key Laboratory for Special Fiber Photonic Devices, School of Information and Optoelectronic Science and Engineering, South China Normal University, Guangdong, China
| | - Zhongchao Wei
- Guangzhou Key Laboratory for Special Fiber Photonic Devices, School of Information and Optoelectronic Science and Engineering, South China Normal University, Guangdong, China
- * E-mail: (QFD); (ZCW)
| | - Faqiang Wang
- Guangzhou Key Laboratory for Special Fiber Photonic Devices, School of Information and Optoelectronic Science and Engineering, South China Normal University, Guangdong, China
| | - Hongzhan Liu
- Guangzhou Key Laboratory for Special Fiber Photonic Devices, School of Information and Optoelectronic Science and Engineering, South China Normal University, Guangdong, China
| | - Hongyun Meng
- Guangzhou Key Laboratory for Special Fiber Photonic Devices, School of Information and Optoelectronic Science and Engineering, South China Normal University, Guangdong, China
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Li S, Wang Y, Jiao R, Wang L, Duan G, Yu L. Fano resonances based on multimode and degenerate mode interference in plasmonic resonator system. OPTICS EXPRESS 2017; 25:3525-3533. [PMID: 28241566 DOI: 10.1364/oe.25.003525] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/06/2023]
Abstract
In this paper, three Fano resonances based on three different physical mechanisms are theoretically and numerically investigated in a plasmonic resonator system, comprised of two circular cavities. And the multimode interference coupled mode theory (MICMT) including coupling phases is proposed to explain the Fano resonances in plasmonic resonator system. According to MICMT, one of the Fano resonances originates from the interference between different resonant modes of one resonator, the other is induced by the interference between the resonant modes of different resonators. Mode degeneracy is removed when the symmetry of the system is broken, thereby emerging the third kind of Fano resonance which is called degenerate interference Fano resonance, and the degenerate interference coupled mode theory (DICMT) is proposed to explain this kind of Fano resonance. The sensitivity and FOM* (figure of merit) of these Fano resonances can be as high as 840 nm/RIU and 100, respectively. These are useful for fundamental study and applications in sensors, splitters and slow-light devices.
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Li S, Zhang Y, Song X, Wang Y, Yu L. Tunable triple Fano resonances based on multimode interference in coupled plasmonic resonator system. OPTICS EXPRESS 2016; 24:15351-15361. [PMID: 27410811 DOI: 10.1364/oe.24.015351] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/06/2023]
Abstract
In this paper, an asymmetric plasmonic structure composed of two MIM (metal-insulator-metal) waveguides and two rectangular cavities is reported, which can support triple Fano resonances originating from three different mechanisms. And the multimode interference coupled mode theory (MICMT) including coupling phases is proposed based on single mode coupled mode theory (CMT), which is used for describing and explaining the multiple Fano resonance phenomenon in coupled plasmonic resonator systems. Just because the triple Fano resonances originate from three different mechanisms, each Fano resonance can be tuned independently or semi-independently by changing the parameters of the two rectangular cavities. Such, a narrow 'M' type of double Lorentzian-like line-shape transmission windows with the position and the full width at half maximum (FWHM) can be tuned freely is constructed by changing the parameters of the two cavities appropriately, which can find widely applications in sensors, nonlinear and slow-light devices.
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Han X, Wang T, Li X, Xiao S, Zhu Y. Dynamically tunable plasmon induced transparency in a graphene-based nanoribbon waveguide coupled with graphene rectangular resonators structure on sapphire substrate. OPTICS EXPRESS 2015; 23:31945-55. [PMID: 26698986 DOI: 10.1364/oe.23.031945] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/28/2023]
Abstract
In this paper, we propose dynamically tunable plasmon induced transparency (PIT) in a graphene-based nanoribbon waveguide coupled with graphene rectangular resonators structure on sapphire substrate by shifting the Fermi energy level of the graphene. Two different methods are employed to obtain the PIT effect: one is based on the direct destructive interference between a radiative state and a dark state, the other is based on the indirect coupling through a graphene nanoribbon waveguide. Our numerical results reveal that high tunability in the PIT transparency window can be obtained by altering the Fermi energy levels of the graphene rectangular resonators. Moreover, double PITs are also numerically predicted in this ultracompact structure, comprising series of graphene rectangular resonators. Compared with previously proposed graphene-based PIT effects, our proposed scheme is much easier to design and fabricate. This work not only paves a new way towards the realization of graphene-based integrated nanophotonic devices, but also has important applications in multi-channel-selective filters, sensors, and slow light.
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