Analysis and Comparison the elliptical and circular air hole PCF for chemical / bio-sensing application using 2D FDTD method

International Journal of Applied Physics

© 2020 by SSRG - IJAP Journal

Volume 7 Issue 1

Year of Publication : 2020

Authors : N.Muduli, P.Sahu, S. Behera

10.14445/23500301/IJAP-V7I1P104

How to Cite?

N.Muduli, P.Sahu, S. Behera, "Analysis and Comparison the elliptical and circular air hole PCF for chemical / bio-sensing application using 2D FDTD method," SSRG International Journal of Applied Physics, vol. 7,  no. 1, pp. 21-26, 2020. Crossref, https://doi.org/10.14445/23500301/IJAP-V7I1P104

Abstract:

We purpose to design two different liquid infiltrating PCF structure having elliptical and circular air holes in their cladding region. We examine three different liquid analyte like benzene, ethanol and water to infiltrate the fiber core and proper numerical investigation of pumped PCF is computed by the principle of 2D FDTD method including anisotropic perfectly matched layer as boundary treatment. The numerically calculated relative sensitivity are plotted versus wavelength by optimized various parameter of purposed PCF structure .The result reveals that higher sensitivity as a chemical sensor for low refractive index liquid analyte like benzene, ethanol and water. It also can be used to examine other essential properties like spot size, nonlinearity, beam divergence, confinement loss and V parameter so distinctly. The proposed elliptical air hole PCF enhances their higher sensitivity of 55.32%, 50.2% & 58.88% for ethanol, water and benzene respectively at an operating wavelength of 1.33μm. While circular air hole PCF enhances their higher sensitivity of 53.68%, 49.18% & 56.47% for same liquid analyte. In fact PCF structure having elliptical air holes in their cladding region shows more relative sensitivity over circular air hole PCF even though fabrication of elliptical PCF being very difficult. Hence selecting such PCF will play very important effective role in optical telecommunication and sensing purpose.

Keywords:

PCF, Chemical Sensor, Sensitivity, FDTD Method.

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