Astigmatism-controlled beam shaping for high-quality fibre Bragg grating inscription using femtosecond laser

Lukman Kamarudin, Yuehui Ma, Jiaxuan Li, Bing Sun, Kaiming Zhou

Research output: Chapter in Book/Published conference outputConference publication

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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.
Original languageEnglish
Title of host publication29th International Conference on Optical Fiber Sensors
EditorsJose Luis Santos, Manuel Lopez-Amo Sainz, Tong Sun
PublisherSociety of Photo-Optical Instrumentation Engineers (SPIE)
Number of pages4
Volume13639
ISBN (Electronic)9781510691872
DOIs
Publication statusPublished - 22 May 2025

Publication series

NameProceedings of SPIE
Volume13639
ISSN (Electronic)0277-786X

Bibliographical note

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.

Keywords

  • beam shaping
  • femtosecond laser
  • fibre Bragg grating

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