光通信系统中新型可调谐半导体激光器的设计

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。

Design of novel tunable semiconductor lasers in optical fiber communication systems

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 .