Study of near and mid-infrared Photonic crystal waveguide suitable for biosensing application

In this paper, we aim to report preliminary results on parameter-dependent bandpass wavelength in the near and mid-infrared range around 0.8 µm to 8 µm of 2D photonic crystal suitable for biosensing application. The device is in nanometer scale length congruously placed into a chip. Our effort is to create a foundation work to allocate bandpass wavelength suitable for biosensing applications. We suggest some wavelength bands by changing geometrical parameters like the radius of pillars, lattice constant, and channel width or by changing the photonic crystal structure. A line defect is introduced into the photonic crystal structure and its impact on bandpass wavelength has been investigated using COMSOL Multiphysics software version 6.0.