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Trapping or confining light in the optical fibers is very well known. They have revolutionized the telecom and medical industries and are paving the path for miniaturized circuits. In comparison to their electrical counterparts like electrical wires, they show lower losses, higher speed and higher tunability. Even nature has understood its importance way back then humans found it. Some insects like planthopper nymph, use optical fibers to defend themselves and to help them glide as they fall. Even our eyes possess optical fibers to effectively pass light into the photoreceptors. So, being inspired by this, various organic
materials are synthesized and utilized for applications nowadays. The organic materials self-assemble to form various morphologies like spheres, rods, tubes, plates, etc. depending on
the synthesis conditions. The organic microrods and microtubes formed with higher refractive index are then used as optical fibers. Here, I will present the basics of optical fibers and spectroscopy and then will introduce my work on peptides and urea as optical
ibers and search for their potential sensing applications utilizing various optical phenomena like spectral interference, chromatic aberrations, Fabry-Perot and whispering gallery cavity resonance, evanescent wave coupling, etc.
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