Abstract

A novel, to the best of our knowledge, cantilever construction design of an adaptive fiber-optics collimator (AFOC) based on piezoelectric bimorph actuators for tip/tilt control is introduced. With this new cantilever structure, an AFOC with a diameter of only 6 mm was developed, and the output laser beam deviation angle and resonance frequency of the device were measured. The experimental results show that this new AFOC can provide more than 1 mrad deflection angle at a 20 V driving voltage, and the first resonance frequency is about 500 Hz. Further, in order to verify whether the cantilever structure can be used in a high-power fiber collimator, a high-power ${X} {-} {Y}$ positioner with an 8 mm diameter fiber end cap was developed. The experimental results show that the high-power ${X} {-} {Y}$ positioner can output more than 2 kW laser power and provide about 330 µm displacement of the fiber end cap in the ${{X}}$ direction and about 770 µm in the ${{Y}}$ direction at a 150 V driving voltage.

© 2022 Optica Publishing Group

Adaptive fiber optics collimator based on flexible hinges

Dong Zhi, Yanxing Ma, Pengfei Ma, Lei Si, Xiaolin Wang, and Pu Zhou
Appl. Opt. 53(24) 5434-5438 (2014)

Piezoelectric bimorph optical-fiber sensor

Fengguo Sun, Gaozhi Xiao, Zhiyi Zhang, and Chander P. Grover
Appl. Opt. 43(9) 1922-1925 (2004)

Novel adaptive fiber-optics collimator for coherent beam combination

Dong Zhi, Pengfei Ma, Yanxing Ma, Xiaolin Wang, Pu Zhou, and Lei Si
Opt. Express 22(25) 31520-31528 (2014)

Wavefront sensing based on fiber coupling in adaptive fiber optics collimator array

Feng Li, Chao Geng, Guan Huang, Yan Yang, and Xinyang Li
Opt. Express 27(6) 8943-8957 (2019)

High-resolution beam scanning technique with microlens array and adaptive fiber-optics collimator

Xu Yang, Chao Geng, Feng Li, Xiaoyang Li, Jing Zuo, Jiali Jiang, Bincheng Li, and Xinyang Li
Opt. Express 29(1) 359-367 (2021)