飞秒光纤激光相干偏振合成系统全光纤光程差自适应控制方法研究

提出了一种全光纤光程差自适应控制方法，并成功应用于飞秒光纤激光相干偏振合成系统。建立的光程差自适应控制系统以现场可编程门阵列（FPGA）控制电路为硬件基础，基于爬山法设计了有效的控制算法，成功解决了光程差自适应控制与锁相控制相互干扰的问题。实验结果表明，系统可以完全补偿±60λ范围内的光程差漂移，具有良好的连续工作稳定性，可以满足飞秒光纤激光相干偏振合成系统中光程差自适应控制的要求。

Abstract

An all-fiber optical path difference adaptive control method is proposed, and it has been successfully applied to the femtosecond fiber laser coherent polarization combination system. Field programmable gate array (FPGA) control circuit is used as the hardware foundation in the establishment of the optical path difference adaptive control system, and an effective control algorithm is designed based on the hill-climbing algorithm, which can successfully solve the disturbance problem between optical path difference adaptive control and phase-locked control. The experimental results show that the system can completely compensate the optical path difference drift in the range of ±60λ with good continuous working stability, which can meet the requirements of optical path difference adaptive control in the femtosecond fiber laser coherent polarization combination system.

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张志新, 于海龙, 支冬, 马阎星, 王小林, 周朴, 司磊. 飞秒光纤激光相干偏振合成系统全光纤光程差自适应控制方法研究[J]. 光学学报, 2016, 36(9): 0906003. Zhang Zhixin, Yu Hailong, Zhi Dong, Ma Yanxing, Wang Xiaolin, Zhou Pu, Si Lei. All Fiber Optical Path Difference Adaptive Control Method in Femtosecond Fiber Laser Coherent Polarization Beam Combination System[J]. Acta Optica Sinica, 2016, 36(9): 0906003.

飞秒光纤激光相干偏振合成系统全光纤光程差自适应控制方法研究

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