A tiny gas-sensor system based on 1D photonic crystal

Bouzidi, Afaf; Bria, Driss; Akjouj, Abdellatif; Pennec, Yan; Djafari‐Rouhani, Bahram

doi:10.1088/0022-3727/48/49/495102

Cited by 37 publications

(18 citation statements)

References 34 publications

(38 reference statements)

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“…The width and position of these PBGs can be adjusted by the number of periods (number of sites) of the structure, the number of resonators in each site, and the boundary condition at the limit interface of the resonators. The introduction of defects inside the SWGs structure or other periodic structures, gives rise to well-defined transmission peaks corresponding to defect modes inside the band gaps in the transmission spectra [17][18][19][20][21][22][23][24]. For many practical applications, an important task is the predicted rearrangement of the electromagnetic spectrum, which is related to the correct choice of the mediums constituting the structure and nature of the defects introduced inside it.…”

Section: Introductionmentioning

confidence: 99%

High Quality Factor Microwave Multichannel Filter Based on Multi-Defectives Resonators Inserted in Periodic Star Waveguides Structure

Ben-Ali¹,

Kadmiri²,

Tahri³

et al. 2020

PIER C

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The transmission spectrum of electromagnetic waves through a one-dimensional photonic star waveguides (SWGs) structure is obtained using the Green function method (GFM). The proposed structure is composed of a finite number of periodic cells; each cell contains a segment of length d 1 grafted in its extremity by resonators of length d 2. This periodic system is altercated by insertion of defects resonators located in three different sites which have lengths d 02 , d 04 , and d 06 different from that of the perfect resonators. The properties of such a multi-defects structure are suitable for tunable very narrow band multichannel filter applications in microwave domain. The perfect photonic structure demonstrates large microwave photonic band gaps (PBGs) in which the propagation of electromagnetic waves is prohibited. For the sake of comparison, we first introduce single defect resonators located in one site; this defect creates hence two transmission peaks (defect modes) in the gaps. These induced modes of noticeable transmissions and good quality factors permit our proposed SWGs to behave like a single narrow band channel filter. Several localized modes appear in the band gaps when we introduce three resonators defects of different lengths and located in three different sites. With an appropriate choice of the geometrical parameters d 1 = 1 m, d 2 = 0.5 m, d 02 = d 04 = d 06 = 2 m, our thrice defectives system can create, in the microwave frequencies range, till eight transmission peaks in the gaps when the defects are located in three consecutive sites. These peaks have very high values of transmission rates and important quality factors reaching Q = 610000. Therefore, our proposed system acts as very narrow band multichannel filters for which defects modes shift towards the low frequencies when the defects resonators lengths increase. The results obtained demonstrate the dependence of the defect modes frequencies, transmission coefficient, and the quality factor on the resonators defects lengths, their numbers, and their positions inside the defective structure.

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Section: Introductionmentioning

confidence: 99%

High Quality Factor Microwave Multichannel Filter Based on Multi-Defectives Resonators Inserted in Periodic Star Waveguides Structure

Ben-Ali¹,

Kadmiri²,

Tahri³

et al. 2020

PIER C

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“…Finally, it can be concluded that the proposed sensor exhibits better performance compare to recent published articles. The proposed sensor gains the maximum sensitivity of 800 nm/RIU; FoM of 420000 (RIU − 1 ) and exhibits better outcomes compare to articles [15,19,21,22,27,30]. In addition, it can be highlighted that the sensitivity response of proposed model can be enhanced by varying the size of the defect layer in the model.…”

Section: Resultsmentioning

confidence: 87%

“…In this paper, we use the interface response theory of continuous media, a simple presentation of the Green function [24][25][26]. This technique is the most suitable for the treatment of composite systems containing several interfaces [27,28].…”

Section: Methodsmentioning

confidence: 99%

Numerical Investigation of Simultaneous Refractive index Sensor using 1D multichannel photonic crystal device

Bouzidi

Bria

El‐Khozondar

et al. 2020

Preprint

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We present a multichannel sensor for the simultaneous monitoring of three different samples. established from a one-dimensional photonic crystal, this device is formed by an alternating layer of silicon dioxide (SiO2) and titanium dioxide (TiO2) with three defect layers containing the samples to be monitored. Numerical studies claim that three transmission peaks appear in the bandgap, these transmission peaks are caused by the three samples infiltrated in the defect layers. In real-time detection purposes, it is possible to exploit these transmission peaks. In addition, peak frequencies have the advantage of being susceptible to sample concentrations. With this photonic structure, a sensitivity of 800 nm per unit of refractive index (RIU) is reached.

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“…In what follows and referring to the studies of Bouzidi et al [12], we applied the previous analysis to a practical situation, by fixing the parameters of the resonant structure: d H = 114.31 nm, d L = 393.14 nm, d C = 780 nm, and θ c = 11π 40 . With these parameters, the operating wavelength of the sensor will be set to the reference wavelength λ 0 = 1.573 µm.…”

Section: Concentration and Sensitivity Of Detectionmentioning

confidence: 99%

Gas Sensing Using One-Dimensional Photonic Crystal Nanoresonators

Habli¹,

Bouazzi²,

Kanzari³

2019

PIER C

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In recent years, there has been more research on the use of photonic crystals PCs in the field of detection. The application of these materials as gas sensors seems very promising, because of their miniaturization and high spectral sensitivities. The aim of this work is to contribute to the design and study of a resonant microsystem based on one-dimensional photonic crystals for applications such as optical devices with high quality factor for detecting and measuring the concentration of gas in the air. Indeed, we have proposed a gas monitoring structure. This nanosystem is formed by an alternating stack of silicon Si layers and air with a resonant nanocavity in the middle. The numerical results show that the resonance peak that appears on the Photonic Band Gap (PBG) is caused by the creation of the nanocavity within the periodic 1D structure. This resonance peak can be used as a reference for real-time detection and environmental monitoring. In addition, we theoretically studied the relevance of these photonic systems and analyzed the effect of the intrinsic and extrinsic parameters of this device on the detection performance. We have also tried to improve the performance of such a device for the effect study of the inclination variation of the radiation incidence source on the selectivity of the detector.

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A tiny gas-sensor system based on 1D photonic crystal

Cited by 37 publications

References 34 publications

High Quality Factor Microwave Multichannel Filter Based on Multi-Defectives Resonators Inserted in Periodic Star Waveguides Structure

High Quality Factor Microwave Multichannel Filter Based on Multi-Defectives Resonators Inserted in Periodic Star Waveguides Structure

Numerical Investigation of Simultaneous Refractive index Sensor using 1D multichannel photonic crystal device

Gas Sensing Using One-Dimensional Photonic Crystal Nanoresonators

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