Infiltrated photonic crystal cavity as a highly sensitive platform for glucose concentration detection

Arafa, Safia; Bouchemat, Mohamed; Bouchemat, Touraya; Benmerkhi, Ahlem; Hocini, Abdesselam

doi:10.1016/j.optcom.2016.10.019

Cited by 73 publications

(16 citation statements)

References 50 publications

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“…The proposed sensor 650 0.001 -As it can be expected, a sensitivity of 758 nm/RIU has been achieved, the sensitivity increases rapidly to a greater number of functionalized holes (figure 6.b). this can be explained by the reduced effective refractive index between the infiltrated holes and the semiconductor membrane [14,29]. Consequently, a local infiltration guarantees a better sensitivity.…”

Section: Numerical Results and Discussionmentioning

confidence: 99%

“…The interaction between a cavity resonator and a waveguide system has been previously demonstrated in [5][6][7][8], tremendous research works are done in biosensing [9][10][11][12][13][14], chemical and gas sensing [15][16][17], temperature sensing [18], stress sensing [19]. It was also shown that a PhC cavity and waveguides sensor might be used in refractive index (RI) sensing where the detection of an analyte may be done by a local RI shift [20][21].…”

Section: Introductionmentioning

confidence: 99%

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Mid-infrared Refractive Index Sensor Based on a 2D Photonic Crystal Coupled Cavity-two Waveguides

Tayoub¹,

Hocini²,

Harhouz³

2019

I2M

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In this paper, a viable design of mid-infrared refractive index sensor based on photonic crystal coupled cavity-two waveguides is proposed. An increasing number of works are dedicated to investigate the behavior of refractive index sensor based on photonic crystal in the mid-infrared range. We define the sensitivity of our sensor by detecting the shift in the resonance wavelength as a function of the refractive index's variations in the region around the cavity. The purpose of this study is to design a highly sensitive mid-infrared photonic crystal sensor. Consequently, an improved sensitivity of 650 nm/RIU (refractive index units) with a detection limit of 0.001 RIU has been obtained. The sensitivity can be improved from 394 nm/RIU to 758 nm/RIU with a detection limit of 0.01 RIU in the wavelength range of 2,97 µm to 3,71 µm by increasing the number of the infiltrated holes. The same design has been used as a liquid sensor and a sensitivity of 550 nm/RIU has been achieved with a detection limit of 0.001 RIU for RI=1.33 and RI=1.331. The properties of the sensor are simulated using the finitedifference time-domain (FDTD) method from the RSoft software package.

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Section: Numerical Results and Discussionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Mid-infrared Refractive Index Sensor Based on a 2D Photonic Crystal Coupled Cavity-two Waveguides

Tayoub¹,

Hocini²,

Harhouz³

2019

I2M

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“…When the surrounding environment changes the structural parameters or refractive index of PC cavity, the resonant characteristics of the PC cavity will change accordingly. By detecting the change of the resonant frequency (or the shift of the resonant wavelength), a miniaturized and highly sensitive sensor can be realized …”

Section: Introductionmentioning

confidence: 99%

Theoretical Design and Simulation Optimization of Photonic Crystal Cavity for Tetrahydrofuran Vapor Sensing

Wang

Siyu

et al. 2019

Physica Status Solidi (b)

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A photonic crystal (PC) cavity with high quality factor (Q), wide measurement range, and high refractive index (RI) sensitivity is proposed and its possibility in tetrahydrofuran (THF) vapor sensing is theoretically demonstrated. The resonance characteristics of the PC cavity are simulated and optimized by using finite difference time domain (FDTD) method. Cholesteric liquid crystal (CLC) is selected as an example to infiltrate into local air holes of the PC cavity. Since the RI of the CLC and consequently the resonance wavelength of the PC cavity would change with the variation of the THF vapor concentration, this proposed PC cavity can be used for THF vapor sensing. By optimizing structural parameters of several air holes, the simulation results show that the RI sensitivity can be up to 194 nm RIU−1, along with a high Q of 2 × 105 and a detection limit (DL) as low as 4 × 10−5 RIU. For the THF sensing, the theoretical sensitivity and detection limit of THF vapor concentration can be 0.128 nm · L mmol−1 and 0.06 mmol L−1, respectively. Besides, it was theoretically verified that the PC cavity sensor has the ability to maintain RI sensitivity over a wide refractive index range of 1.33–1.53, enabling it to measure more other parameters.

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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%

“…The sensitivity of a device is reflected by the magnitude of light-matter interaction. Among all the different biosensor designs that have been developed, the biosensors based on PC coupled waveguide micro-cavities systems have attracted significant interests due to their compact size, high Qfactor and high S [10][11][12][13][14][15]. However, the design drawback of these biosensors is that they typically operate as point or single detection unit and the number of targets which can be screened for at once is relatively small.…”

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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Infiltrated photonic crystal cavity as a highly sensitive platform for glucose concentration detection

Cited by 73 publications

References 50 publications

Mid-infrared Refractive Index Sensor Based on a 2D Photonic Crystal Coupled Cavity-two Waveguides

Mid-infrared Refractive Index Sensor Based on a 2D Photonic Crystal Coupled Cavity-two Waveguides

Theoretical Design and Simulation Optimization of Photonic Crystal Cavity for Tetrahydrofuran Vapor Sensing

High sensitive photonic crystal multiplexed biosensor array using H0 sandwiched cavities

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