Effects of modulation amplitude and frequency of frequency-modulated fiber lasers on the threshold of the stimulated Brillouin scattering in optical fiber

• 来源期刊: 中国光学快报(英文版)
• 学科: 工学
• 关键词: 受激布里渊散射 光纤激光器 调制频率 调制幅度 阈值 调频 光纤传输系统 SBS
• 年，卷（期）: 2010,（12）
• 所属期刊栏目: Fiber Optics and Optical Communications
• 页码范围: 1124-1126
• 页数: 3页
• 分类号: TN248 O437.2
• 语种: 英文

摘要

Stimulated Brillouin scattering (SBS) is a key problem with the increasing power of fiber transmission systems. In this letter, a frequency-modulated fiber laser with an ultra-narrow linewidth is chosen as a light source. The SBS threshold is increased from 4.1 to 6.2 mW at 13-MHz frequency modulation amplitude for a 50-km G652 fiber. We also show that the SBS threshold increases with not only the frequency modulation amplitude, but also the modulation frequency. The modulation frequency should be high enough for effective modulation.