Resin made long-period fiber grating structure for tunable optical filter inside single-mode fiber

Conference proceedings article

Authors/Editors

Strategic Research Themes

Publication Details

Author list: Khun-In R., Usuda Y., Jiraraksopakun Y., Bhatranand A., Yokoi H.

Publisher: Trans Tech Publications Ltd

Publication year: 2020

Volume number: 861 KEM

Start page: 259

End page: 263

Number of pages: 5

ISBN: 9783035716696

ISSN: 10139826

URL: https://www.scopus.com/inward/record.uri?eid=2-s2.0-85091303172&doi=10.4028%2fwww.scientific.net%2fKEM.861.259&partnerID=40&md5=f07423b06b21f49b7b080831818b7166

Languages: English-Great Britain (EN-GB)

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Abstract

The rectangular-structured resin with one of its triangular long-period fiber grating surface is designed and printed out by using a high resolution 3D printer, so called long-period fiber grating (LPFG) resin. This LPFG resin is directly pressed on the bare single-mode fiber by a digital force meter to filter out partial band of light inside the fiber. The grating period is expanded by tilting the resin from the initial fiber axis. The optical filter is observed as resonant wavelengths from the broadband wavelength. The results show that the resonant wavelength shift is a linear function of the grating period with the coefficient of determination over 0.99. The proposed scheme has a great potential to be employed as a sensor such as a selective optical filter and a buried intrusion sensor. © 2020 Trans Tech Publications Ltd, Switzerland.

Keywords

Long-period fiber grating, Silica fiber