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High-Quality Fiber Bragg Gratings Inscribed by Femtosecond Laser Point-by-Point Technology
We experimentally studied the inscription of fiber Bragg gratings by using femtosecond (fs) laser point-by-point (PbP) technology. The effects of the focusing geometry, grating order, laser energy and grating length on the spectral characteristics of the PbP FBG were investigated. After optimizing t...
Autores principales: | , , , , , |
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Formato: | Online Artículo Texto |
Lenguaje: | English |
Publicado: |
MDPI
2022
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Materias: | |
Acceso en línea: | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC9698210/ https://www.ncbi.nlm.nih.gov/pubmed/36363828 http://dx.doi.org/10.3390/mi13111808 |
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author | Chen, Runxiao He, Jun Xu, Xizhen Wu, Jiafeng Wang, Ying Wang, Yiping |
author_facet | Chen, Runxiao He, Jun Xu, Xizhen Wu, Jiafeng Wang, Ying Wang, Yiping |
author_sort | Chen, Runxiao |
collection | PubMed |
description | We experimentally studied the inscription of fiber Bragg gratings by using femtosecond (fs) laser point-by-point (PbP) technology. The effects of the focusing geometry, grating order, laser energy and grating length on the spectral characteristics of the PbP FBG were investigated. After optimizing these parameters, a high-quality first-order PbP FBG with a reflectivity > 99.9% (i.e., Bragg resonance attenuation of 37.7 dB) and insertion loss (IL) of 0.03 dB was successfully created. Moreover, taking advantage of the excellent flexibility of the fs laser PbP technology, high-quality FBGs with various Bragg wavelengths ranging from 856 to 1902.6 nm were inscribed. Furthermore, wavelength-division-multiplexed (WDM) FBG arrays consisting of 10 FBGs were rapidly constructed. Additionally, a Fabry-Perot cavity was realized by using two high-quality FBGs, and its birefringence could be reduced from 3.04 × 10(−5) to 1.77 × 10(−6) by using a slit beam shaping-assisted femtosecond laser PbP technology. Therefore, such high-quality FBGs are promising to improve the performance of optical fiber sensors, lasers and communication devices. |
format | Online Article Text |
id | pubmed-9698210 |
institution | National Center for Biotechnology Information |
language | English |
publishDate | 2022 |
publisher | MDPI |
record_format | MEDLINE/PubMed |
spelling | pubmed-96982102022-11-26 High-Quality Fiber Bragg Gratings Inscribed by Femtosecond Laser Point-by-Point Technology Chen, Runxiao He, Jun Xu, Xizhen Wu, Jiafeng Wang, Ying Wang, Yiping Micromachines (Basel) Article We experimentally studied the inscription of fiber Bragg gratings by using femtosecond (fs) laser point-by-point (PbP) technology. The effects of the focusing geometry, grating order, laser energy and grating length on the spectral characteristics of the PbP FBG were investigated. After optimizing these parameters, a high-quality first-order PbP FBG with a reflectivity > 99.9% (i.e., Bragg resonance attenuation of 37.7 dB) and insertion loss (IL) of 0.03 dB was successfully created. Moreover, taking advantage of the excellent flexibility of the fs laser PbP technology, high-quality FBGs with various Bragg wavelengths ranging from 856 to 1902.6 nm were inscribed. Furthermore, wavelength-division-multiplexed (WDM) FBG arrays consisting of 10 FBGs were rapidly constructed. Additionally, a Fabry-Perot cavity was realized by using two high-quality FBGs, and its birefringence could be reduced from 3.04 × 10(−5) to 1.77 × 10(−6) by using a slit beam shaping-assisted femtosecond laser PbP technology. Therefore, such high-quality FBGs are promising to improve the performance of optical fiber sensors, lasers and communication devices. MDPI 2022-10-23 /pmc/articles/PMC9698210/ /pubmed/36363828 http://dx.doi.org/10.3390/mi13111808 Text en © 2022 by the authors. https://creativecommons.org/licenses/by/4.0/Licensee MDPI, Basel, Switzerland. This article is an open access article distributed under the terms and conditions of the Creative Commons Attribution (CC BY) license (https://creativecommons.org/licenses/by/4.0/). |
spellingShingle | Article Chen, Runxiao He, Jun Xu, Xizhen Wu, Jiafeng Wang, Ying Wang, Yiping High-Quality Fiber Bragg Gratings Inscribed by Femtosecond Laser Point-by-Point Technology |
title | High-Quality Fiber Bragg Gratings Inscribed by Femtosecond Laser Point-by-Point Technology |
title_full | High-Quality Fiber Bragg Gratings Inscribed by Femtosecond Laser Point-by-Point Technology |
title_fullStr | High-Quality Fiber Bragg Gratings Inscribed by Femtosecond Laser Point-by-Point Technology |
title_full_unstemmed | High-Quality Fiber Bragg Gratings Inscribed by Femtosecond Laser Point-by-Point Technology |
title_short | High-Quality Fiber Bragg Gratings Inscribed by Femtosecond Laser Point-by-Point Technology |
title_sort | high-quality fiber bragg gratings inscribed by femtosecond laser point-by-point technology |
topic | Article |
url | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC9698210/ https://www.ncbi.nlm.nih.gov/pubmed/36363828 http://dx.doi.org/10.3390/mi13111808 |
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