Generation of tunable dual-wavelength low jitter gain-switched optical pulses
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摘要: 提出了一种产生可调谐双波长低抖动超短光脉冲的新方法。采用外光注入法来降低增益开关F-P激光脉冲的时间抖动,实现了脉冲光谱的双波长可调谐输出。实验中利用两个多量子阱DFB激光器作为外部种子光源,通过温度控制和偏振态调节使外部种子光有效地耦合到增益开关F-P激光器中,输出的光脉冲时间抖动(均方根)从2.57ps降低至1.06ps,双波长的边模抑制比可达25dB。通过改变DFB激光器和F-P激光器的工作温度,可实现波长从1540nm到1560nm的可调谐输出。
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关键词:
- 激光技术 /
- 增益开关半导体激光器 /
- 双波长 /
- 光注入 /
- 时间抖动
Abstract: A novel scheme for generating dual-wavelength low timing jitter tunable ultra-short pulses is demonstrated.Injecting the external seeding source to the gain-switched F-P laser diode,a reduction of timing jitter and a tunable dual-wavelength spectrum is achieved.Two multiple quantum-well DFB laser diodes are used as the external-injection seeding source.Adjusting the temperature of the laser diodes and the polarization of the seeding source,the injection seeding source is coupled with the F-P laser diode effectively.A reduction of timing jitter(root-mean-square) from 2.57ps to 1.06ps is achieved,and the output side-mode-suppression-ratio is larger than 25dB.Changing the temperature of the laser diodes,a tunable range from 1540nm to 1560nm is achieved.-
Keywords:
- laser technique /
- gain-switched laser diode /
- dual-wavelength /
- optical injection /
- timing jitter
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