Sensitivity Analysis of Sidelobes of the Lowest Order Cladding Mode of Long Period Fiber Gratings at Turn Around Point

A new methodology to enhance the sensitivity of a long period fiber grating sensor (LPFG) at the Turn Around Point (TAP) is here presented. The LPFG sensor has been fabricated by etching the fiber up to 20.4 µm, until the sidelobes of dispersed LP(0,2) cladding mode appeared near TAP in aqueous medi...

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Detalles Bibliográficos
Autores principales: Dey, Tanoy Kumar, Tombelli, Sara, Roy, Arpan, Biswas, Palas, Giannetti, Ambra, Basumallick, Nandini, Baldini, Francesco, Bandyopadhyay, Somnath, Trono, Cosimo
Formato: Online Artículo Texto
Lenguaje:English
Publicado: MDPI 2022
Materias:
Communication
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC9028772/
https://www.ncbi.nlm.nih.gov/pubmed/35458949
http://dx.doi.org/10.3390/s22082965
Descripción
Sumario:A new methodology to enhance the sensitivity of a long period fiber grating sensor (LPFG) at the Turn Around Point (TAP) is here presented. The LPFG sensor has been fabricated by etching the fiber up to 20.4 µm, until the sidelobes of dispersed LP(0,2) cladding mode appeared near TAP in aqueous medium. The dual peak sensitivity of the sidelobes was found to be 16,044 nm/SRIU (surrounding refractive index units) in the RI range from 1.333 to 1.3335.

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