Sensitivity analysis of a photonic crystal waveguide for refraction index sensing

Bougriou, Faida; Boumaza, T.; Bouchemat, Mohamed; Paraire, N.

doi:10.1088/0031-8949/2012/t151/014064

Cited by 6 publications

(4 citation statements)

References 21 publications

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“…To enhance the sensitivity, a single row of holes is introduced within the defect-line (shown in figure 3) because it would decrease the effective refractive index and increase the fill factor near the waveguide (defectline). Since the electromagnetic field is quite intense in this region [13], incorporation of holes in this region increases light-matter interaction and affects the sensitivity.…”

Section: Results and Analysismentioning

confidence: 99%

Design and simulation of high-sensitive gas sensor using a ring-shaped photonic crystal waveguide

Goyal

Pal

2015

Phys. Scr.

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In this paper, we have proposed a photonic crystal waveguide with a ring-shaped structure of holes for gas sensing applications. The behaviour of the sensor is analysed by using the 3D finite difference time domain (FDTD) method. The proposed structure is designed by etching ringshaped holes in a silicon layer and by deliberately introducing a row of holes in the waveguide (line-defect). In order to improve the sensitivity, ring-shaped holes are over-etched by a finite depth in the underneath oxide layer. The transmission spectral characteristics and the sensitivity are analysed by varying the defect-radius and the etch-depth. The proposed structure shows a 0.05 nm shift in the cut-off wavelength, corresponding to a refractive index change of 10 −4 .

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Section: Results and Analysismentioning

confidence: 99%

Design and simulation of high-sensitive gas sensor using a ring-shaped photonic crystal waveguide

Goyal

Pal

2015

Phys. Scr.

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“…Photonic crystal waveguide structure made in SOI wafer, lattice constant = 500 nm, holes diameter = 400 nm. various parameters of the region near the line defect [16], this is due to the fact that in that region the electromagnetic field is very intense. Therefore, some defects are incorporated in the line defect as shown in Fig.…”

Section: Simulation Results and Analysismentioning

confidence: 99%

Design and simulation of high sensitive photonic crystal waveguide sensor

Goyal

Pal

2015

Optik

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“…The PhCWs were fabricated in GaAs substrate, and response for Xylene and Isopropanol was demonstrated with good sensitivity. Variation in refractive index by infiltration was also analyzed [124]. In a triangular air-hole PhCW made on a silicon substrate, the radii of air holes localized at each side of the waveguide were optimized and infiltrated to increase the sensitivity.…”

Section: B Liquid Sensingmentioning

confidence: 99%

Slow-Light Enhanced Liquid and Gas Sensing Using 2-D Photonic Crystal Line Waveguides—A Review

Singhal

Paprotny

2022

IEEE Sensors J.

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Photonic Crystals (PhCs) are periodically structured dielectric materials that have attracted significant research interest in the last two decades for their ability to slow down group velocity of a propagating pulse envelope with promising sensing applications. This review paper discusses the properties of two-dimensional (2D) PhCs including the slow-light phenomenon, band-gap generation and application of these properties for gas and liquid sensing. Waveguide generation by introducing defects with light guiding and confinement is discussed. Additionally, for 2D PhC line waveguides, a comprehensive review on slow-light principle and phenomenon of slow-light enhanced sensing for gases and liquids is discussed. One-dimensional (1D) and three-dimensional (3D) PhCs are also reviewed for band-gap generation and defects in PhCs along with present fabrication challenges and future trends. Our study highlights an increase in the detection capabilities of PhC based sensors paving way for high sensitivity detectors with applications in ubiquitous monitoring of gases and liquids.

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Sensitivity analysis of a photonic crystal waveguide for refraction index sensing

Cited by 6 publications

References 21 publications

Design and simulation of high-sensitive gas sensor using a ring-shaped photonic crystal waveguide

Design and simulation of high-sensitive gas sensor using a ring-shaped photonic crystal waveguide

Design and simulation of high sensitive photonic crystal waveguide sensor

Slow-Light Enhanced Liquid and Gas Sensing Using 2-D Photonic Crystal Line Waveguides—A Review

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