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

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dc.contributor.author Kam, Wern
dc.contributor.author Ong, Yong Sheng
dc.contributor.author O’Keeffe, Sinead
dc.contributor.author Mohammed, Waleed S.
dc.contributor.author Lewis, Elfed
dc.date.accessioned 2020-01-28T12:15:14Z
dc.date.available 2020-01-28T12:15:14Z
dc.date.issued 2019
dc.identifier.uri http://hdl.handle.net/10344/8435
dc.description peer-reviewed en_US
dc.description.abstract 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. en_US
dc.language.iso eng en_US
dc.publisher MDPI en_US
dc.relation 2014-0855 en_US
dc.relation.ispartofseries Sensors;19, 4968
dc.subject optical coupling effciency en_US
dc.subject axial displacement en_US
dc.subject angular misalignment en_US
dc.subject geometrical optic en_US
dc.title An analytical model for describing the power coupling ratio between multimode fibers with transverse displacement and angular misalignment in an optical fiber bend sensor en_US
dc.type info:eu-repo/semantics/article en_US
dc.type.supercollection all_ul_research en_US
dc.type.supercollection ul_published_reviewed en_US
dc.identifier.doi 10.3390/s19224968
dc.contributor.sponsor ERC en_US
dc.relation.projectid 2014-0855 en_US
dc.rights.accessrights info:eu-repo/semantics/openAccess en_US
dc.internal.rssid 2935276


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