University of Limerick
Browse
Kam_2019_Analytical.pdf (1.38 MB)

An analytical model for describing the power coupling ratio between multimode fibers with transverse displacement and angular misalignment in an optical fiber bend sensor

Download (1.38 MB)
journal contribution
posted on 2020-01-28, 12:15 authored by WERN KAMWERN KAM, Yong Sheng Ong, Sinead O’Keeffe, Waleed S. Mohammed, ELFED LEWISELFED LEWIS
The power coupling ratio between step-index multimode fibers caused by combined transversal and angular misalignment is calculated. A theoretical description of the coupling efficiency between two optical fibers based on geometrical optics is provided. The theoretical calculations are collaborated by experiments, determining the power coupling ratio between three output fibers with an axial o set and angular misalignment with a single input fiber. The calculation results are in good agreement with experimental results obtained using a previously fabricated optical fiber sensor for monitoring physiological parameters in clinical environments. The theoretical results are particularly beneficial for optimizing the design of optical fiber bending sensors that are based on power coupling loss (intensity) as the measurement interrogation requires either axial displacement, angular misalignment, or both.

Funding

Study on Aerodynamic Characteristics Control of Slender Body Using Active Flow Control Technique

Japan Society for the Promotion of Science

Find out more...

History

Publication

Sensors;19, 4968

Publisher

MDPI

Note

peer-reviewed

Other Funding information

ERC

Language

English

Usage metrics

    University of Limerick

    Categories

    No categories selected

    Exports

    RefWorks
    BibTeX
    Ref. manager
    Endnote
    DataCite
    NLM
    DC