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Point-by-Point Compression of CO2 Infrared Laser for Fabrication of Waist-Enlarged Long Period Fiber Bragg Gratings

preprint
posted on 2023-10-24, 10:08 authored by Jia Yu, Chen Bai, Weiguang Zhang, Chao Mei, Zilong Guo, zhaojin Fan, Tan Zhenkun Tan, Feng Li, Jing Lv, Jiajun Guo, liuqing yang
We propose a method using CO2 laser irradiation to heat and squeeze a standard SMF-28 fiber, forming long-period fiber gratings (LPFGs). By controlling the motor’s squeezing speed and time, we can increase the cladding diameter of optical fibers from 125 μm to a maximum of 160 μm. This expanded structure allows the formation of LPFGs with a minimum period length of 0.325 mm. This method produces LPFGs with larger waist diameters and shorter periods than traditional tapering methods, exhibiting more spectral transmission peaks with a maximum bandwidth less than 3 nm.

History

Funder Name

Natural Science Basic Research Program of Shaanxi Province (NO. 2019JQ-316); Natural Science Basic Research Program of Shaanxi Province (NO. 2022JQ-648); National Natural Science Foundation of China (NO. 62205263); Key Research and Development Projects of Shaanxi Province (No. 2023-YBGY-197); Aeronautical Science Foundation of China (NO. 202000190U1002)

Preprint ID

110597

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