Fabrication of a Screw-Shaped Long-Period Fiber Grating for Refractive Index Sensing

Yonghyun Cho, Farid Ahmed, Hang Eun Joe, Huitaek Yun, Byung Kwon Min, Martin B.G. Jun

Research output: Contribution to journalArticlepeer-review

20 Citations (Scopus)


A process for femtosecond laser-based manufacturing was proposed to fabricate a long-period fiber grating (LPFG) with a screw shape. The screw-shaped LPFG was continuously inscribed by single laser scanning, which results in the improvement of fabrication time. For the single laser scanning, an optical fiber was traveled along fiber axis and rotated about the fiber axis. The 44.65-mm-long LPFG with a screw shape and the period of 450 μ m was fabricated about 17 min, and its sensitivity was 48 51 nm/RIU for the glycerin solutions. The proposed process enables us to produce the screw-shaped LPFGs with fast manufacturing time and reliable performance compared with the process with multi-path scanning.

Original languageEnglish
Article number8078192
Pages (from-to)2242-2245
Number of pages4
JournalIEEE Photonics Technology Letters
Issue number24
Publication statusPublished - 2017 Dec 15

Bibliographical note

Publisher Copyright:
© 1989-2012 IEEE.

All Science Journal Classification (ASJC) codes

  • Electronic, Optical and Magnetic Materials
  • Atomic and Molecular Physics, and Optics
  • Electrical and Electronic Engineering


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