为了适应当前光通信系统对波长可调谐激光器的需求, 提出用游标效应来实现波长可调谐的激光器, 设计了一种功率稳定且频率可调的三段式开槽法布里-珀罗结构可调谐半导体激光器, 给出了系统结构的设计原理, 并进行了理论分析和实验验证。取得了三段式开槽法布里-珀罗结构可调谐半导体激光器激射谱叠加图数据, 利用光纤延迟自外差法测量激光器线宽, 对比了3种不同激光器的线宽测量曲线。结果表明, 基于游标效应设计的新型开槽法布里-珀罗可调谐半导体激光器波长调谐机制简单方便, 且具有很好的单模性和信道切换能力。该研究在未来的光通信领域中具有一定的应用价值和实际意义。

In order to reach demands of tunable lasers in the current optical fiber communication systems, a design concept for wavelength tunable lasers was proposed based on vernier effect. A three-section slotted Fabry-Perot tunable semiconductor laser with stable power and adjustable frequency was designed and its design principle of system structure was given. After theoretical analysis and experimental verification, the lasing spectrum overlay data of the three-section slotted Fabry-Perot tunable semiconductor laser was obtained. Its laser line width was measured by using fiber delay self-heterodyne method. Measurement curves of line widths of three different lasers were compared. The results show that the slotted Fabry-Perot tunable semiconductor laser based on vernier effect is simple and convenient. It has good single-mode performance and channel switching capability. In the future, it has some value and practical significance in the field of optical communication.