Enhancing Label-Free Biochemical Sensing via Graphene Oxide Layer Deposition on Dual Resonance Peak Long Period Gratings

Kasun P. W. Dissanayake; Kasun P. W. Dissanayake; Souvik Ghosh; Souvik Ghosh; Leonardo Binetti; Lourdes Alwis; B. M. Azizur Rahman; Tong Sun; Kenneth T. V. Grattan

doi:10.1364/OFS.2023.Tu3.3

28th International Conference on Optical Fiber Sensors
Technical Digest Series (Optica Publishing Group, 2023),
paper Tu3.3
•https://doi.org/10.1364/OFS.2023.Tu3.3

Enhancing Label-Free Biochemical Sensing via Graphene Oxide Layer Deposition on Dual Resonance Peak Long Period Gratings

Kasun P. W. Dissanayake, Souvik Ghosh, Leonardo Binetti, Lourdes Alwis, B. M. Azizur Rahman, Tong Sun, and Kenneth T. V. Grattan

Optical Fiber Sensors 2023

Naka-ku, Hamamatsu-shi Japan
20–24 November 2023
ISBN: 978-1-957171-30-2

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Poster Session I (Tu3)

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K. P. W. Dissanayake, S. Ghosh, L. Binetti, L. Alwis, B. M. Azizur Rahman, T. Sun, and K. T. V. Grattan, "Enhancing Label-Free Biochemical Sensing via Graphene Oxide Layer Deposition on Dual Resonance Peak Long Period Gratings," in 28th International Conference on Optical Fiber Sensors, Technical Digest Series (Optica Publishing Group, 2023), paper Tu3.3.

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Abstract

This research introduces a novel label-free graphene oxide-coated dual-peak long-period grating sensor for measuring protein concentrations. It achieves high sensitivity (22 nm/(g/mL)) and a low limit of detection (0.9 µg/mL), demonstrating extremely high potential for fiber optic biosensor development.

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