Han Xiaofang, Wang Zhao, Gao Feng, Zhang Wending, Bo Fang, Dong Xiao, Zhang Guoquan, Xu Jingjun
Appl Opt. 2022 Jan 1;61(1):22-27. doi: 10.1364/AO.445812.
A robust in-fiber tunable acousto-optic Mach-Zehnder interferometer with a taper-shaped sandwich-like fiber structure is proposed and characterized experimentally, based on which tunable dual-wavelength lasers are demonstrated. The fiber structure was prepared by two-step etching methods, which could be used to fabricate either a symmetric structure for a continuous tuning dual-wavelength laser or an asymmetric structure for a switchable one. The proposed structure has advantages of low cost, low driving power, and robustness. The method for preparing the fiber structure is agile, which paves the way for its applications.
提出了一种具有锥形三明治状光纤结构的稳健型光纤可调谐声光马赫-曾德尔干涉仪，并进行了实验表征，在此基础上演示了可调谐双波长激光器。该光纤结构采用两步蚀刻法制备，可用于制造用于连续调谐双波长激光器的对称结构或用于可切换双波长激光器的不对称结构。所提出的结构具有成本低、驱动功率低和稳健性强的优点。制备光纤结构的方法灵活，为其应用铺平了道路。
