Beat signal compression by loop mirror constructed with linear dispersion decreasing fiber

• 来源期刊: 光电子快报(英文版)
• 学科: 工学
• 年，卷（期）: 2013,（3）
• 页码范围: 173-176
• 页数: 4页
• 分类号: TN253
• 语种: 中文

摘要

A nonlinear optical loop mirror (NOLM) constructed with linear dispersion decreasing fiber (DDF) is used to compress a beat signal. Several factors impacting on quality of output pulse in this compression system, such as dispersion slope of DDF, power-splitting ratio, incident pulse shape and peak power, are analyzed numerically. The new method for selecting device characteristics is adopted to enable both good pedestal suppression and pulse compression. As a result, the output pulse train with tunable and high repetition rate, pedestal energy of 5.09%, compression ratio of 25.6 and energy transmissivity of 50.56% is obtained by using 0.524 km-long DDF with dispersion slope of 26 ps~2/km~2 and a coupler with power-splitting ratio of 0.54.