Kamarudin, Lukman, Ma, Yuehui, Li, Jiaxuan, Sun, Bing and Zhou, Kaiming (2025). Astigmatism-controlled beam shaping for high-quality fibre Bragg grating inscription using femtosecond laser. IN: 29th International Conference on Optical Fiber Sensors. Proceedings of SPIE, 13639 . Society of Photo-Optical Instrumentation Engineers (SPIE).
Abstract
We present an astigmatism-controlled beam-shaping technique for femtosecond laser inscription of FBGs, optimizing beam profiles using a cylindrical lens to mitigate focal distortion and enhance grating quality. This method improves reflectivity, reduces insertion losses, and expands grating dimensions, offering a scalable solution for advanced optical communication and sensing.
| Publication DOI: | https://doi.org/10.1117/12.3061292 |
|---|---|
| Divisions: | College of Engineering & Physical Sciences > Aston Institute of Photonics Technology (AIPT) Aston University (General) |
| Funding Information: | European Union Horizon 2020 Research and Innovation Staff Exchange (RISE) programme (872049, IPN-Bio) |
| Additional Information: | Copyright 2025 SPIE. One print or electronic copy may be made for personal use only. Systematic reproduction, duplication of any material in this paper for a fee or for commercial purposes, or modification of the content of the paper are prohibited. |
| Last Modified: | 04 Dec 2025 17:01 |
| Date Deposited: | 03 Dec 2025 17:45 |
| Full Text Link: | |
| Related URLs: |
https://www.spi ... 12.3061292.full
(Publisher URL) |
PURE Output Type: | Conference contribution |
| Published Date: | 2025-05-22 |
| Accepted Date: | 2025-04-22 |
| Authors: |
Kamarudin, Lukman
Ma, Yuehui Li, Jiaxuan Sun, Bing Zhou, Kaiming ( 
0000-0002-6011-1912)
|
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