Numerical Analysis of Tapered Optical Fiber Sensors utilizing beam propagation methods

Authors

Presenter(s)

Chaminda Ajith Kumara Ranathunga Ranathunga Mudiyanselage Ihala Gane Gedara

Comments

Presentation: 1:15-2:30, Kennedy Union Ballroom

Files

Description

Tapered Optical Fibers Sensors (TOFSs) have gained attention as sensors due to their elevated sensitivity, real-time specimen analysis, and practical measuring capabilities. By reducing the waist of the optical fiber, the optical field transmitted inside is permitted to extend beyond the fiber, enabling the detection of subtle changes in the refractive index near the sensitive(tapered) region. This can be efficiently used for bio-sensing and other sensing applications. An FFT-BPM is used to model optical propagation through fibers with different core and cladding thicknesses aimed at modeling a tapered fiber. The refractive index profile was suitably modified from a standard step-index fiber to include the presence of antibodies and antigens on the surface of the fiber with reduced cross-section. Detected power variation with wavelength scanning is proportionally phase-shifted for different antigen concentrations.

Publication Date

4-17-2024

Project Designation

Graduate Research

Primary Advisor

Partha P. Banerjee, Cong Deng

Primary Advisor's Department

Electro-Optics and Photonics

Keywords

Stander Symposium, School of Engineering

Institutional Learning Goals

Scholarship; Practical Wisdom; Community

Recommended Citation

"Numerical Analysis of Tapered Optical Fiber Sensors utilizing beam propagation methods" (2024). Stander Symposium Projects. 3399.
https://ecommons.udayton.edu/stander_posters/3399