Plasmon-Induced Transparency and Refractive Index Sensing Based on a Trapezoid Cavity Coupled with a Hexagonal Resonator

Liu, Dongdong; Fu, Wei; Shao, Jian; Wang, Jicheng; Zhang, Qun; Han, Bing; Dao-xiang, Teng

doi:10.1007/s11468-018-0844-x

Cited by 21 publications

(10 citation statements)

References 30 publications

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“…Compared with the circular ring, the RTRC transmission spectrum has more transmittance drop valleys, and new resonance modes appear at λ = 700 nm and λ = 1365 nm, which are expressed as m = 2 and m = 1, respectively. Based on the coupled mode theory (CMT) [25], the mechanism of double Fano resonance is analyzed. The resonant amplitudes of the two resonant modes in the racetrack resonant cavity are represented by f 1 and f 2 , and normalized to the energy in the resonant cavity; S 1+ and S 2+ respectively represent the mode field amplitudes of the incident light at the incident port and the output port, S 1− and S 2− respectively represent the mode field amplitude of the light emitted from the incident port and the output port.…”

Section: Fano Resonance Principle Analysismentioning

confidence: 99%

“…For example, Liu et structure with a short rod and a cup-shaped resonant cavity coupling [21], which serves as a refractive index sensor with a sensitivity of 600 nm/RIU. Zhang et al proposed a refractive index sensor structure coupled with a tooth-shaped cavity [22], whose sensitivity reached 1200 nm/RIU, whereas Liu et al analyzed a sensor structure coupled with a hexagonal resonant cavity [25] as a refractive index sensor that achieved a sensitivity of 937 nm/RIU. Chen et al proposed a sensing system coupled with a rectangular resonant cavity [26] with a temperature-sensing sensitivity of 0.225 nm/ • C. Chen et al discussed temperature-sensing characteristics based on the ring resonant cavity [27], the sensitivity of which reached 0.31 nm/ • C.…”

Section: Introductionmentioning

confidence: 99%

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Research on Fano Resonance Sensing Characteristics Based on Racetrack Resonant Cavity

Cui

Liu

et al. 2021

Micromachines

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To reduce the loss of the metal–insulator–metal waveguide structure in the near-infrared region, a plasmonic nanosensor structure based on a racetrack resonant cavity is proposed herein. Through finite element simulation, the transmission spectra of the sensor under different size parameters were analyzed, and its influence on the sensing characteristics of the system was examined. The analysis results show that the structure can excite the double Fano resonance, which has a distinctive dependence on the size parameters of the sensor. The position and line shape of the resonance peak can be adjusted by changing the key parameters. In addition, the sensor has a higher sensitivity, which can reach 1503.7 nm/RIU when being used in refractive index sensing; the figure of merit is 26.8, and it can reach 0.75 nm/°C when it is used in temperature sensing. This structure can be used in optical integrated circuits, especially high-sensitivity nanosensors.

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Section: Fano Resonance Principle Analysismentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Research on Fano Resonance Sensing Characteristics Based on Racetrack Resonant Cavity

Cui

Liu

et al. 2021

Micromachines

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“…and demonstrated for their capability of realizing PIT as an analogy to EIT in the atomic system. [104][105][106][107][108][109][110][111][112][113][114][115] In 2008, Zhang et al demonstrated a novel plasmonic metamaterial structure consisting of a radiative element and a dark element that enables PIT to appear. [116] Figure 7a shows the alignment of this plasmonic structure, and it is advantageous in room-temperature operation, wide bandwidth, and easy integration with plasmonic circuit.…”

Section: Plasmon-induced Transparencymentioning

confidence: 99%

Induced Transparency with Optical Cavities

Qin

Ding

Yin

2020

Advanced Photonics Research

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Induced transparency, an interference effect due to mode coupling, has attracted significant research interest. The first discovered and most striking type of induced transparency plays electromagnetically induced transparency (EIT) in atomic systems. Optical cavities serve as a more ideal and feasible platform for realizing the effects of induced transparency, which leads to considerable demonstrations in theory and experiments. This review provides a run‐through of research findings on different types of induced transparency phenomenon, including, inter alia, EIT, optomechanically induced transparency, plasmon‐induced transparency, Brillouin scattering induced transparency, optically induced transparency, photothermally induced transparency, and dipole‐induced transparency. Their mechanisms, developments, techniques, and applications are discussed in detail. Most importantly, the emerging area of induced transparency at exceptional points is analyzed for its great promise. The last section presents a brief summary and perspective of induced transparency with optical cavities.

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“…Optical refractive index (RI) sensors are widely used due to their high sensitivity. Different structures for optical RI sensors have been developed over the past years, such as sensors based on optical fibers [1] and optical resonators [2][3][4][5]. Among these sensing devices, a group is based on the physical phenomenon of surface plasmon resonance (SPR).…”

Section: Introductionmentioning

confidence: 99%

Spectrometer-Free Graphene Plasmonics Based Refractive Index Sensor

Zhang

Farhat

Salama

2020

Sensors

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We propose a spectrometer-free refractive index sensor based on a graphene plasmonic structure. The spectrometer-free feature of the device is realized thanks to the dynamic tunability of graphene’s chemical potential, through electrostatic biasing. The proposed sensor exhibits a 1566 nm/RIU sensitivity, a 250.6 RIU−1 figure of merit in the optical mode of operation and a 713.2 meV/RIU sensitivity, a 246.8 RIU−1 figure of merit in the electrical mode of operation. This performance outlines the optimized operation of this spectrometer-free sensor that simplifies its design and can bring terahertz sensing one step closer to its practical realization, with promising applications in biosensing and/or gas sensing.

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Plasmon-Induced Transparency and Refractive Index Sensing Based on a Trapezoid Cavity Coupled with a Hexagonal Resonator

Cited by 21 publications

References 30 publications

Research on Fano Resonance Sensing Characteristics Based on Racetrack Resonant Cavity

Research on Fano Resonance Sensing Characteristics Based on Racetrack Resonant Cavity

Induced Transparency with Optical Cavities

Spectrometer-Free Graphene Plasmonics Based Refractive Index Sensor

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