Modelling and optimization of TiO2based two- dimensional photonic crystal for salinity detection in water

IF 3.1 3区物理与天体物理 Q2 Engineering

Optik Pub Date : 2024-12-24 DOI:10.1016/j.ijleo.2024.172193

Priyanka Yadav, Ravindra Singh, Ram narayan, Surendra Prasad

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引用次数: 0

Abstract

In this article, we have presented a computational analysis of two-dimensional photonic crystals (2D- PCs) having circular and elliptical waveguide structures inside a

{TiO}_{2}

host material for the salinity detection in the water. The band structure of the proposed 2D- PCs has been optimized for better salinity detection based on the number of circular and elliptical waveguiding pores taken in the PCs structure and changes in the radius of circular pores and for different major-minor axis of elliptical pores. The electric field profiles corresponding to these structures have also been plotted. The salinity detection sensitivity is calculated by computing the change in transmittance

({∆ T}_{n_{1.333} - n_{1.35}}

) corresponding to changes in refractive indices due to salinity in water. It is observed that maximum sensitivity is obtained corresponding to refractive indices,

n_{1.333}, n_{1.35}

which is equal to 0.9198 in the circular pore in the 2D-PCs structure. For the elliptical pore, the sensitivity is 0.8679.

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来源期刊

Optik 物理-光学

CiteScore

6.90

自引率

12.90%

发文量

1471

审稿时长

46 days

期刊介绍： Optik publishes articles on all subjects related to light and electron optics and offers a survey on the state of research and technical development within the following fields: Optics: -Optics design, geometrical and beam optics, wave optics- Optical and micro-optical components, diffractive optics, devices and systems- Photoelectric and optoelectronic devices- Optical properties of materials, nonlinear optics, wave propagation and transmission in homogeneous and inhomogeneous materials- Information optics, image formation and processing, holographic techniques, microscopes and spectrometer techniques, and image analysis- Optical testing and measuring techniques- Optical communication and computing- Physiological optics- As well as other related topics.