Fu Shenggui, Si Libin, Guo Zhancheng, Yuan Shuzhong, Zhao Ying, Dong Xiaoyi
College of Information Technical Science, Nankai University, Tianjin, China.
Appl Opt. 2007 Jun 10;46(17):3579-82. doi: 10.1364/ao.46.003579.
A simple switchable multiwavelength double-clad fiber laser using a multimode fiber Bragg grating (MMFG) as a wavelength selective component is demonstrated. The MMFG is fabricated directly in the active double-clad fiber, resulting in low splicing loss and compact configuration. By properly adjusting the polarization controller in the cavity, the double-clad fiber laser can stably operate at different multiwavelength states at room temperature. At lower pump levels, the laser can be switched between single- and dual-wavelength operations, while at higher pump levels the laser can switch between dual- and triple-wavelength operations. The slope efficiency of the system is 41% with the maximum output power of 6.2 W.
展示了一种简单的可切换多波长双包层光纤激光器，该激光器使用多模光纤布拉格光栅（MMFG）作为波长选择组件。MMFG直接制作在有源双包层光纤中，从而实现了低熔接损耗和紧凑的结构。通过适当地调整腔内的偏振控制器，双包层光纤激光器在室温下能够在不同的多波长状态下稳定运行。在较低的泵浦功率水平下，激光器可以在单波长和双波长运行之间切换，而在较高的泵浦功率水平下，激光器可以在双波长和三波长运行之间切换。该系统的斜率效率为41%，最大输出功率为6.2W。
