Abstract:
Over the years, countless designs of traditional PCFs and SPR-PCFs have been proposed by
researchers with various structures, sensitivities, and confinement losses. However, a majority of
such propositions depicted either large sensitivities but high confinement losses or low sensitivity
and low losses. After an in-depth analysis of several previous works, keeping in mind their
imperfections, we constructed our sensors and polarization filters with outstanding performance
characteristics using Comsol Multiphysics 5.3a. We started our research by designing a typical
hexagonal Photonic Crystal Fiber Sensor for milk detection showing a maximum sensitivity of
81.16% and 81.32% for camel and cow milk. We then went on to develop two different SPR-PCF
sensors; a quadrature cluster SPR-PCF sensor attaining an outstanding ultra-high figure of merit
(FOM) of 4230.42 RIU−1
and a Bent Core PCF-SPR sensor for broadband double peak sensing
gaining maximum amplitude resolution of 1.18×10-6 RIU and a supreme wavelength resolution of
2.16×10-6 RIU. After working with sensors for an immense amount of time, we shifted our focus
to other application aspects of PCFs, more specifically, polarization filters. We lastly suggested a
D-structured single-polarization filter for S and U band applications. All of our designs have been
optimized to achieve remarkable sensing and filtering characteristics like high sensitivity, meager
losses, impressive FOM, satisfactory crosstalk and insertion loss.
Description:
Supervised by
Prof.Dr. Mohammad Rakibul Islam,
Department of Electrical and Electronic Engineering (EEE),
Islamic University of Technology (IUT),
Board Bazar, Gazipur-1704, Bangladesh.
This thesis is submitted in partial fulfillment of the requirements for the degree of Bachelor of Science in Electrical and Electronic Engineering, 2022.
