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Fabricating fiber Bragg gratings based on composite manufacturing methods

QING TAO1,2, CHENCHEN WU1, XIAOLIANG WANG1, YUNLONG SONG1, CHONGCHONG WANG1, JIAN CHENG1, DUN LIU1,* , BOWEN LU3,*

Affiliation

  1. Laser Group, School of Mechanical Engineering, Hubei University of Technology, Wuhan 430068, China
  2. Hubei Key Laboratory of Modern Manufacturing Quantity Engineering, School of Mechanical Engineering, Hubei University of Technology, Wuhan 430068, Hubei, China
  3. State Key Laboratory of Optical Fiber and Cable Manufacture Technology (YOFC), Wuhan 430068, China

Abstract

In this paper, simultaneous spatiotemporal focusing femtosecond laser combined with acupuncture method is proposed. Two gradient index fiber Bragg gratings are designed and fabricated. Their center wavelengths are 980 nm and 1080 nm, bandwidths are 0.23 nm and 0.49 nm, periods are 0.32 µm and 0.36 µm. Testing results show that center wavelength of G1 Bragg grating is 979.372 nm with bandwidth of 0.25 nm. The center wavelength of G2 Bragg grating is 1080.1 nm with bandwidth of 0.52 nm. And, their reflectivity is greater than 99%. The actual results meet the design requirements.

Keywords

Fiber Bragg grating, Simultaneous spatiotemporal focusing, Gradient refractive index, Transmittance and reflectivity, Femtosecond laser inducing.

Citation

QING TAO, CHENCHEN WU, XIAOLIANG WANG, YUNLONG SONG, CHONGCHONG WANG, JIAN CHENG, DUN LIU, BOWEN LU, Fabricating fiber Bragg gratings based on composite manufacturing methods, Optoelectronics and Advanced Materials - Rapid Communications, 18, 3-4, March-April 2024, pp.103-112 (2024).

Submitted at: Nov. 30, 2023

Accepted at: April 8, 2024