Abstract

A high-temperature-resistant linearly polarized single-frequency distributed Bragg reflector fiber laser is demonstrated by using a femtosecond laser and directly fabricating a pair of fiber Bragg gratings (FBGs) into an erbium-doped fiber (EDF). A high-reflection FBG with high birefringence prepared by femtosecond laser overexposure is used as a polarization selector. The integrated resonator cavity is 0.82 cm to ensure single-frequency operation. After annealing treatment, the laser can work stably at 600°C, and no mode hopping happens at different temperatures. By using the residual pump light and a suitable EDF to amplify the laser, a narrow linewidth laser with an output power of 26.3 mW, a degree of polarization reaching 0.984, and a linewidth less than 4 kHz is obtained.

© 2022 Optica Publishing Group

Triple-wavelength laser from a femtosecond laser directly-written fiber cavity for microwave generation

Jindan Shi, Wenjuan Sun, Rui Chen, Shihao Yin, and Xian Feng
Opt. Lett. 47(19) 4861-4864 (2022)

55 W kilohertz-linewidth core- and in-band-pumped linearly polarized single-frequency fiber laser at 1950 nm

Xianchao Guan, Changsheng Yang, Quan Gu, Weiwei Wang, Tianyi Tan, Qilai Zhao, Wei Lin, Xiaoming Wei, Zhongmin Yang, and Shanhui Xu
Opt. Lett. 45(8) 2343-2346 (2020)

Multi-parameter sensor with high sensitivity based on a long-period fiber grating prepared by a polarization-maintaining fiber

Shuo Zhang, Tao Geng, and Weimin Sun
Opt. Lett. 47(9) 2266-2269 (2022)

High-Q-factor phase-shifted helical fiber Bragg grating by one-step femtosecond laser inscription for high-temperature sensing

Xicheng Wang, Zhifang Wu, Yefen Wei, Wenqing Yang, Yanyan Huang, Zhiyuan Wang, Perry Ping Shum, Xiaoyan Wang, and Jixiong Pu
Opt. Lett. 47(6) 1407-1410 (2022)

Polarization-maintaining all-fiber tunable mode-locked laser based on a thermally controlled Lyot filter

Xiangnan Sun, Yuanjun Zhu, Lei Jin, Shinji Yamashita, and Sze Yun Set
Opt. Lett. 47(19) 4913-4916 (2022)