Please use this identifier to cite or link to this item:
http://hdl.handle.net/10397/94509
DC Field | Value | Language |
---|---|---|
dc.contributor | Photonics Research Centre | en_US |
dc.contributor | Department of Electrical Engineering | en_US |
dc.creator | Dash, JN | en_US |
dc.creator | Cheng, X | en_US |
dc.creator | Gunawardena, DS | en_US |
dc.creator | Tam, HY | en_US |
dc.date.accessioned | 2022-08-25T01:53:13Z | - |
dc.date.available | 2022-08-25T01:53:13Z | - |
dc.identifier.issn | 2327-9125 | en_US |
dc.identifier.uri | http://hdl.handle.net/10397/94509 | - |
dc.language.iso | en | en_US |
dc.publisher | Optical Society of America | en_US |
dc.rights | © 2021 Chinese Laser Press | en_US |
dc.rights | The following publication Dash, J. N., Cheng, X., Gunawardena, D. S., & Tam, H. Y. (2021). Rectangular single-mode polymer optical fiber for femtosecond laser inscription of FBGs. Photonics Research, 9(10), 1931-1938 is available at https://doi.org/10.1364/PRJ.434252. | en_US |
dc.title | Rectangular single-mode polymer optical fiber for femtosecond laser inscription of FBGs | en_US |
dc.type | Journal/Magazine Article | en_US |
dc.identifier.spage | 1931 | en_US |
dc.identifier.epage | 1938 | en_US |
dc.identifier.volume | 9 | en_US |
dc.identifier.issue | 10 | en_US |
dc.identifier.doi | 10.1364/PRJ.434252 | en_US |
dcterms.abstract | In this study, a novel rectangular polymer single-mode optical fiber for femtosecond (fs) laser-inscribed fiber Bragg gratings (FBGs) is proposed and demonstrated. The cylindrical geometry of the widely used circular fiber elongates the fs laser beam along the fiber axis, resulting in reduced laser intensity and requiring index-matching oil immersion during FBG inscription. However, the flat geometry and negligible surface roughness of the featured fiber significantly diminish this lensing distortion and eliminate the need for oil immersion, thereby resulting in optimal focusing of the laser beam, permitting direct and efficient inscription of FBGs within the optical fiber. The core and cladding of the rectangular fiber were fabricated using two different grades of ZEONEX, a cyclo olefin polymer, which have slightly different refractive indices. The similar glass transition temperature for core and cladding simplifies the fiber drawing process, and a rectangular single-mode optical fiber with dimensions of 213 μm × 160 μm and core diameter of 9.4 μm was fabricated using an in-house fiber drawing facility. A second harmonic (520 nm) fs laser beam was used to successfully inscribe a 2-mm-long FBG in the rectangular fiber within a few seconds with a point-by-point technique. The inscription of a single FBG leads to the excitation of higher order FBG peaks at 866.8 and 1511.3 nm, corresponding to widely used wavelength bands in fiber optic sensing. The strain and temperature sensitivities of the FBG were measured to be 7.31 nm=%∈ (0.731pm/μ∈) and 10 pm/°C, and 12.95 nm/%∈ (1.29 pm/μ∈) and 15 pm/°C at 866.8 nm and 1511.3 nm, respectively. | en_US |
dcterms.accessRights | open access | en_US |
dcterms.bibliographicCitation | Photonics research, 1 Oct. 2021, v. 9, no. 10, p. 1931-1938 | en_US |
dcterms.isPartOf | Photonics research | en_US |
dcterms.issued | 2021-10-01 | - |
dc.identifier.scopus | 2-s2.0-85115952465 | - |
dc.description.validate | 202208 bchy | en_US |
dc.description.oa | Version of Record | en_US |
dc.identifier.FolderNumber | EE-0009 | - |
dc.description.fundingSource | RGC | en_US |
dc.description.fundingSource | Others | en_US |
dc.description.fundingText | The Hong Kong Polytechnic University; Guangdong Science and Technology Department | en_US |
dc.description.pubStatus | Published | en_US |
dc.identifier.OPUS | 58650721 | - |
dc.description.oaCategory | VoR allowed | en_US |
Appears in Collections: | Journal/Magazine Article |
Files in This Item:
File | Description | Size | Format | |
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prj-9-10-1931.pdf | 1.45 MB | Adobe PDF | View/Open |
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