Modeling optical transistor based on the pole effect of parity-time symmetric coupled cavities

Ma, Ji; Fang, Yun-tuan

doi:10.1016/j.optcom.2021.127831

Cited by 2 publications

(1 citation statement)

References 22 publications

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“…Hence such devices are not perfect and accurate in detecting and sensing. Similar to the parity-time (PT) condition in quantum mechanics, the photonic 1D structures can satisfy the PT conditions using loss and gain dielectric layers [30][31][32]. The optical refractive index plays a crucial role in achieving such conditions.…”

Section: Introductionmentioning

confidence: 99%

Photonic crystal with magnified resonant peak for biosensing applications

et al. 2023

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A theoretically and numerically photonic crystal structure with parity-time symmetry is investigated to realize the design of a biomedical sensor for biosensing applications. The transmittance spectra of the structure are investigated, and various performance parameters are evaluated. Different structure parameters such as the unit cell number, the thickness of the sample layer, macroscopic Lorentz oscillation intensity in the PT-symmetry unit cell, the porosity of gallium nitride, and incident angle are theoretically and numerically investigated. To improve the performance of the device, an optimization technique is used. The relatively high sensitivities of 496 nm/RIU (the change in the resonant peak wavelength per refractive index unit) and 1002142 %/RIU (the change in the transmittance of the resonant peak per refractive index unit) are achieved. The proposed device can be a relatively high-precision detection device for biosensing applications.

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Section: Introductionmentioning

confidence: 99%

Photonic crystal with magnified resonant peak for biosensing applications

et al. 2023

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High-sensitivity Goos–Hänchen shift gas sensor based on subwavelength hyperbolic metamaterials

Wei

et al. 2023

Int. J. Mod. Phys. C

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Optical gas sensors play an increasingly important role in many applications, particularly for the detection of toxic gases. A novel Goos–Hänchen (GH) shift optical gas sensing scheme based on subwavelength hyperbolic metamaterials (HMMs) is proposed. The GH shift intensity, direction and the critical wavelength characteristics were revealed. By virtue of the GH shift and subwavelength HMMs characteristics, we designed an ultra-sensitive gas sensor to detect helium (He), hydrogen (H2), carbon monoxide (CO) and methane (CH4). The study shows that the sensitivities of the gas sensor can reach as high as [Formula: see text], [Formula: see text], [Formula: see text], and [Formula: see text]. With proper surface chemical modification, this GH shift gas sensor would be a powerful tool for high-sensitive gas sensing applications.

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Modeling optical transistor based on the pole effect of parity-time symmetric coupled cavities

Cited by 2 publications

References 22 publications

Photonic crystal with magnified resonant peak for biosensing applications

Photonic crystal with magnified resonant peak for biosensing applications

High-sensitivity Goos–Hänchen shift gas sensor based on subwavelength hyperbolic metamaterials

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