High-Sensitive Mid-Infrared Photonic Crystal Sensor Using Slotted-Waveguide Coupled-Cavity

Tayoub, Hadjira; Hocini, Abdesselam; Harhouz, Ahlam

doi:10.2528/pierm21071207

Cited by 4 publications

(2 citation statements)

References 41 publications

(44 reference statements)

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“…Figure 4 illustrates the three predominant types of WGs that are commonly used. These consist of slot WGs, strip WGs, and rib WGs [50][51][52]. The top cladding material, which contains the analyte, is being substantially penetrated by the guided mode's evanescent field.…”

Section: Optical Waveguide-based Sensorsmentioning

confidence: 99%

A Review on Photonic Sensing Technologies: Status and Outlook

et al. 2023

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In contemporary science and technology, photonic sensors are essential. They may be made to be extremely resistant to some physical parameters while also being extremely sensitive to other physical variables. Most photonic sensors may be incorporated on chips and operate with CMOS technology, making them suitable for use as extremely sensitive, compact, and affordable sensors. Photonic sensors can detect electromagnetic (EM) wave changes and convert them into an electric signal due to the photoelectric effect. Depending on the requirements, scientists have found ways to develop photonic sensors based on several interesting platforms. In this work, we extensively review the most generally utilized photonic sensors for detecting vital environmental parameters and personal health care. These sensing systems include optical waveguides, optical fibers, plasmonics, metasurfaces, and photonic crystals. Various aspects of light are used to investigate the transmission or reflection spectra of photonic sensors. In general, resonant cavity or grating-based sensor configurations that work on wavelength interrogation methods are preferred, so these sensor types are mostly presented. We believe that this paper will provide insight into the novel types of available photonic sensors.

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Section: Optical Waveguide-based Sensorsmentioning

confidence: 99%

A Review on Photonic Sensing Technologies: Status and Outlook

et al. 2023

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“…Phoxonic crystals can serve as promising platform for enhancing the acousto-optic interaction in micro-and nano-structures [2][3][4][5]. They can be directly designed as acousto-optical dual-function device, such as waveguide [6][7][8][9][10], sensor [11][12][13][14], opti-cal switch [15] etc., and they can also be used in quantum communication or quantum computing [16,17]. In 2006, MALDOVAN [18] proved theoretically for the first time that two-dimensional periodic structures can generate photonic and phononic band gaps at the same time.…”

Section: Introductionmentioning

confidence: 99%

Acousto-optical coupling in two-dimensional air-slot phoxonic crystal heterostructure cavity

Ma Zhen-Meng,

Tian Miao,

Zhang Lei

et al. 2023

Optica Applicata

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Phoxonic crystal is a periodic artificial structure that can manipulate optical and acoustic waves in the same temporal and spatial domain. It has broad application prospect in optical communication, optical mechanics sensor, quantum computations, phoxonic crystal integrated devices and so on. In this paper, we adopt a silicon-based two-dimensional square lattice structure, which can exhibit wide band gap of phonons and photons simultaneously. Then a periodic rectangular structure is introduced on the surface, the effects of the height and width of the rectangle on the optical and acoustic surface wave modes are analyzed. Based on the mode gap effect, a surface heterostructure composed of rectangles with different heights and widths is constructed. Then two identical surface heterostructures are placed face to face with an air slot in the middle, and connected with silicon substrate on both sides, which form an air slot heterostructure cavity. Five phononic cavity modes and three photonic cavity modes are obtained, the acousto-optical coupling rates between phononic and photonic cavity modes are calculated. The results show that the coupling rate between phononic and photonic cavity mode with the same symmetry and maximum overlap is the largest, and the coupling rates between the combination of phononic cavity modes α and β and photonic cavity modes can be adjusted by changing the phase difference φ of modes α and β. In this paper, the finite element method is used to simulate the calculation.

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All-dielectric metasurfaces with high Q-factor Fano resonances enabling multi-scenario sensing

et al. 2022

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We propose and numerically demonstrate high Q-factor sensors based on all-dielectric metasurfaces, which are very sensitive to the change of the refractive index of the surrounding media and the incident angle. By using the light incident angular scanning method, the all-dielectric metasurface based on symmetric tetramer can act as an excellent sensing platform for trace-amount molecules such as protein A/G, 2, 4-DNT, and 2D material graphene with huge absorbance enhancement in the mid-infrared broadband spectrums. The results reveal that envelope of absorbance amplitudes is in good agreement with the vibrational mode of molecules, and absorbance enhancement factors reach as high as 10 dB in the mid-infrared wavelength range from 5.75 to 6.80 μm. To further increase the Q-factor of the resonances, the all-dielectric metasurface based on asymmetric tetramer is investigated. This asymmetric structure can induce toroidal and magnetic dipoles governed by quasi-BIC to produce multi-extremely narrow linewidth Fano resonances, and the maximum sensitivity reaches up to 1.43 μm/RIU. Therefore, the proposed all-dielectric metasurface demonstrates highly enhanced performance in refractive index and chemical information sensing for trace-amount biomolecules, which inspires the development of new high-sensitivity refractive index sensors for the nondestructive identification in the mid-infrared regime.

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High-Sensitive Mid-Infrared Photonic Crystal Sensor Using Slotted-Waveguide Coupled-Cavity

Cited by 4 publications

References 41 publications

A Review on Photonic Sensing Technologies: Status and Outlook

A Review on Photonic Sensing Technologies: Status and Outlook

Acousto-optical coupling in two-dimensional air-slot phoxonic crystal heterostructure cavity

All-dielectric metasurfaces with high Q-factor Fano resonances enabling multi-scenario sensing

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