Cladding Modes Generation Through Highly Localized Bragg Grating in Polymer Optical Fiber
Thanks to the highly localized fiber Bragg grating obtained by a femtosecond laser and point-by-point inscription method, a cladding mode spectral range of over 80 nm is achieved in polymer optical fibers. After grating inscription, refractometric measurement is conducted within a range from 1.38 to 1.54 to measure the surrounding refractive index, and the evolution of the cladding mode resonances is analyzed accordingly. By monitoring the cutoff mode, the refractive index sensitivity is found to be 527 nm/RIU (refractive index unit). The originality of our work lies in the production of highly localized FBGs with a large spectral range of cladding mode resonances in polymer optical fibers, capable of measuring refractive indices in a wide range in aqueous solutions and (bio)chemical media.
Authors
- Rui Min (ORCID: https://orcid.org/0000-0001-7900-0422)
- Peng-Cheng Li (ORCID: https://orcid.org/0000-0002-4471-5935)
- Ole Bang (ORCID: https://orcid.org/0000-0002-8041-9156)
- Getinet Woyessa (ORCID: https://orcid.org/0000-0002-2164-9453)
- Xuehao Hu (ORCID: https://orcid.org/0000-0003-0239-6144)
- Jiaxin Li (ORCID: https://orcid.org/0000-0002-3113-0874)
- Hang Qu (ORCID: https://orcid.org/0000-0003-1556-0222)
Institutions
- University of Mons (BE)
- Beijing Normal University (CN)
- Shantou University (CN)
- Technical University of Denmark (DK)
Publication Details
- Journal
- IEEE Photonics Technology Letters
- Published
- 2025-02-13
- DOI
- https://doi.org/10.1109/lpt.2025.3541835
- Primary Topic
- Advanced Fiber Optic Sensors
- Type
- article
- Field-Weighted Citation Impact
- 0.00
Funders
- Li Ka Shing Foundation
- Shantou University
- National Natural Science Foundation of China
- Fonds De La Recherche Scientifique - FNRS
- Technion-Israel Institute of Technology
- Department of Education of Guangdong Province