2 June 2014 Design of long period fiber grating with optimal sensitivity for detecting adhesion of nano-layer on the fiber surface
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Proceedings Volume 9157, 23rd International Conference on Optical Fibre Sensors; 91573F (2014) https://doi.org/10.1117/12.2059690
Event: OFS2014 23rd International Conference on Optical Fiber Sensors, 2014, Santander, Spain
Abstract
For detecting bio-molecular interaction using long period grating (LPG) we believe that a quantitative data concerning sensitivity for addition of layers on the surface and subsequently to optimize the same appears to be more usefull than defining LPG sensitivity for a surrounding refractive index change in bulk form. For the first time, to the best of our knowledge, we quantify the shift of resonant wavelength (Δλres) of the mode of interest around the transition point as a function of unit bi-layer thickness (Δd) of poly-electrolyte, deposited by ionic self assembly, and subsequently optimize the sensitivity Δλres/Δd. Experimental result show that a shift of ~12.5 nm/bi-layer is possible with optimum number of bi-layer deposition.
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Palas Biswas, Palas Biswas, Tanoy Kumar Dey, Tanoy Kumar Dey, Nandini Basumallick, Nandini Basumallick, Prasanta Kumar Sinha, Prasanta Kumar Sinha, Kamal Dasgupta, Kamal Dasgupta, Somnath Bandyopadhyay, Somnath Bandyopadhyay, } "Design of long period fiber grating with optimal sensitivity for detecting adhesion of nano-layer on the fiber surface ", Proc. SPIE 9157, 23rd International Conference on Optical Fibre Sensors, 91573F (2 June 2014); doi: 10.1117/12.2059690; https://doi.org/10.1117/12.2059690
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