Zhao Li, Li Wei, Chen Yunhao, Yu Ting, Zhao Enming, Tang Jianing
Opt Express. 2024 May 6;32(10):16799-16808. doi: 10.1364/OE.520588.
We model and demonstrate a self-matching photonic lantern (SMPL) device, which is designed to address the constraint of limited transverse modes generated by fiber lasers. The SMPL incorporates a FMF into the array at the input end of a traditional photonic lantern. The few-mode fiber at the output end is specifically configured to align with the few-mode fiber at the input, therefore named as SMPL. This paper details the design and fabrication of the SMPL device, validated by both simulation and experiment. The 980nm fundamental mode, injected via 980nm single-mode fibers, selectively excites corresponding higher-order modes at the few-mode port of the SMPL. Additionally, 1550nm fundamental and higher-order modes injected at the input end into the SMPL device demonstrates mode preservation and low-loss transmission characteristics. The SMPL is well-suited for developing a ring laser system, enabling selective excitation of 980nm pump light modes and facilitating closed-loop oscillation and transmission of 1550nm laser.
我们对一种自匹配光子灯笼（SMPL）器件进行了建模和演示，该器件旨在解决光纤激光器产生的横向模式有限的限制。SMPL在传统光子灯笼的输入端将一根少模光纤（FMF）并入阵列。输出端的少模光纤经过特殊配置，使其与输入端的少模光纤对齐，因此被命名为SMPL。本文详细介绍了SMPL器件的设计和制造过程，并通过仿真和实验进行了验证。通过980nm单模光纤注入的980nm基模，在SMPL的少模端口选择性地激发相应的高阶模。此外，在输入端注入到SMPL器件中的1550nm基模和高阶模表现出模式保持和低损耗传输特性。SMPL非常适合用于开发环形激光系统，能够选择性地激发980nm泵浦光模式，并促进1550nm激光的闭环振荡和传输。
