Optofluidic sensor using two-dimensional photonic crystal waveguides

Bougriou, Faida; Bouchemat, Touraya; Bouchemat, Mohamed; Paraire, N.

doi:10.1051/epjap/2013110442

Cited by 29 publications

(10 citation statements)

References 23 publications

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“…In recent years, PhCs structures have drawn growing interest [1][2][3][4]. The PhCs are periodicities of dielectrics that can control the propagation of electromagnetic wave travelling through them [1].…”

Section: Introductionmentioning

confidence: 99%

“…The PhCs are periodicities of dielectrics that can control the propagation of electromagnetic wave travelling through them [1]. The periodic variation of their physical properties (dielectric constant) leads to photonic bands of wavelengths at which the light can propagate or be reflected [2,3]. Diverse structures have been investigated as optical sensors, such as gas sensors [4,5], mechanical sensors [6], biochemical sensors [7,8], and refractive index sensors [9][10][11][12].…”

Section: Introductionmentioning

confidence: 99%

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High-Sensitive Thermal Sensor Based on a 1d Photonic Crystal Microcavity With Nematic Liquid Crystal

Charik¹,

Bouras²,

Bennacer³

2021

PIER M

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In this study, 1D Photonic Crystal (PhC) with Nematic Liquid Crystal (N-LC) central microcavity is analyzed and discussed using Rigorous Coupled Wave Analysis (RCWA) method. A microcavity is inserted into the 1D PhC by the Air Defect, making it ideal for measuring the properties of an N-LC contained inside the microcavity. Here simulation is considered for NLC (E7) as a thermal sensor. The principle of photonic crystal thermal sensor operation is studied in the TE mode of the incident beam. We conduct a detailed study of the thermal sensor with differences in the width of central microcavity of N-LC. The sensitivity and quality factor are evaluated. Compared to other photonic crystal sensors mentioned previously, this thermal optical sensor has a much simpler structure and higher sensitivity.

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Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

High-Sensitive Thermal Sensor Based on a 1d Photonic Crystal Microcavity With Nematic Liquid Crystal

Charik¹,

Bouras²,

Bennacer³

2021

PIER M

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“…In particular, photonic crystal (PhC) biosensors, because of their strong capability to manipulate light propagation, their miniaturized size, their high spectral sensitivity and their minimal sample preparation, have generated substantial attention as an attractive candidate for available labelfree systems [1][2][3][4][5][6][7][8][9][10][11][12][13][14][15].…”

Section: Introductionmentioning

confidence: 99%

High sensitive photonic crystal multiplexed biosensor array using H0 sandwiched cavities

Arafa

Bouchemat

et al. 2017

EPJ Web Conf.

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Abstract. We theoretically investigate a high sensitive photonic crystal integrated biosensor array structure which is potentially used for label-free multiplexed sensing. The proposed device consists of an array of three sandwiched H0 cavities patterned above silicon on insulator (SOI) substrate; each cavity has been designed for different cavity spacing and different resonant wavelength. Results obtained by performing finite-difference time-domain (FDTD) simulations, indicate that the response of each detection unit shifts independently in terms of refractive index variations. The optimized design makes possible the combination of sensing as a function of location, as well as a function of time in the same platform. A refractive index sensitivity of 520nm/RIU and a quality factor over 10 4 are both achieved with an accompanied crosstalk of less than -26 dB. In addition, the device presents an improved detection limit (DL) of 1.24.10 -6 RIU and a wide measurement range. These features make the designed device a promising element for performing label-free multiplexed detection in monolithic substrate for medical diagnostics and environmental monitoring.

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“…Most of these optical sensors measure the variations of optical properties as a result of a change in the refractive index of a gas or a liquid. Various structures have been investigated as optical sensors such as fiber Bragg gratings (Fang et al, 2010), step-index fibers and photonic crystal fibers (Lee et al, 2011;Udd and Spillman, 2011), fiber-assisted surface plasmon resonances (Ma et al, 2009), and photonic crystals (Liu and Salemink, 2012;Jágerská et al, 2010;Kang et al, 2010;Bougriou et al, 2013). Recently, optical resonance in photonic crystals has received increased attention for refractive index sensing applications.…”

Section: Introductionmentioning

confidence: 99%

“…Below, we give some of the most recent and important examples. A new design based on a 2-D photonic crystal slab with a triangular lattice pattern has been used for optofluidic sensing with a sensitivity of 636 nm RIU −1 (Bougriou et al, 2013). A 2-D photonic crystal L7 cavity has been studied for refractive sensing of water and ethanol solutions (Liu and Salemink, 2012).…”

Section: Introductionmentioning

confidence: 99%

Refractive index sensing of gases based on a one-dimensional photonic crystal nanocavity

Mohebbi

2015

J. Sens. Sens. Syst.

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Abstract. Silicon photonic crystal sensors have become very attractive for various optical sensing applications. Using silicon as a material platform provides the ability to fabricate sensors with other photonic devices on a single chip. In this paper, a new optical sensor based on optical resonance in a one-dimensional silicon photonic crystal with an air defect is theoretically studied for refractive index sensing in the infrared wavelength region. The air defect introduces a cavity into the photonic crystal, making it suitable for probing the properties of a gas found within the cavity. This photonic crystal nanocavity is designed to oscillate at a single mode with a high quality factor, allowing for refractive index sensing of gases with a high sensitivity. A method is presented to maximize the sensitivity of the sensor and to obtain a very narrow bandwidth cavity mode for good sensor resolution. We change the thickness of the air layers linearly in the photonic crystals on both sides of the nanocavity and show that a sensitivity of 1200 nm RIU −1 can be achieved. We present a detailed analysis of the sensor and variations of the layer thicknesses, the cavity length, and the number of periodic layers in the photonic crystal are investigated. This optical sensor has a much simpler design and higher sensitivity compared to other photonic crystal sensors reported previously.

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Optofluidic sensor using two-dimensional photonic crystal waveguides

Cited by 29 publications

References 23 publications

High-Sensitive Thermal Sensor Based on a 1d Photonic Crystal Microcavity With Nematic Liquid Crystal

High-Sensitive Thermal Sensor Based on a 1d Photonic Crystal Microcavity With Nematic Liquid Crystal

High sensitive photonic crystal multiplexed biosensor array using H0 sandwiched cavities

Refractive index sensing of gases based on a one-dimensional photonic crystal nanocavity

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