Asymmetrical sampling structure to improve the single-longitudinal-mode property based on reconstruction-equivalent-chirp technology

作者：Zhou Yating^*; Shi Yuechun; Li Simin; Liu Shengchun; Chen Xiangfei

来源：Optics Letters, 2010, 35(18): 3123-3125.

We propose a special asymmetric sampling structure based on reconstruction-equivalent-chirp technology to effectively suppress the side mode oscillation in the zeroth channel in a sampled Bragg grating semiconductor laser, which improves greatly the single-longitudinal mode (SLM) oscillation capability of the laser. A numerical simulation is performed. The proposed structure guarantees a normalized threshold gain margin between the main mode and the side mode larger than 0.3. A high side-mode suppression ratio is also observed. The proposed method would be of great importance for the fabrication of high-performance and wideband multiwavelength laser arrays with each laser operating in SLM.

• 出版日期2010-9-15
• 单位常州工学院; 南京大学