Tuning characteristics of fiber ring semiconductor lasers
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摘要: 采用国产半导体器件,组建了半导体光纤环形腔激光器(FRSLs)的实验装置及相应的测试系统,系统地研究了FRSLs的输出和调谐特性.结果表明,已实现高速调制情况下的动态单纵模调谐,并获得波长调谐范围大于36nm的稳定光脉冲输出.确立了FRSLs的阈值特性、输出功率等物理参量与振荡波长之间的关系,提出通过控制分光比来优化和兼顾FRSLs的调谐范围及输出功率.实验结果较好地与理论模拟结果相吻合,为进一步改善FRSLs的性能指标提供了实验依据.同时,这些分析与结论对于相关结构类型的激光器设计也具有一定的参考价值.Abstract: A novel appro ach to achieve single frequency,widely tunable semiconductor laser oscillation is put for ward. One appropriate candidate is a fiber ring semiconductor laser( FRSLs) with a semiconductor gain medium and an external cavity. The threshold current and output power with tuning wavelengths of FRSLs is experimentally studied. The sing lemode oscillation is demonstrated and dynamic tuning of FRSLs is realized. The output optical pulses have been tuned over a wavelength range of 36nm. The analysis confirms that there is an optimum coupler splitting ratio to trade off between wavelength tuning width and output power. The experimental results ar econsistent with theoretical simulation results.
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Keywords:
- semiconductor /
- optical amplifier /
- fiber ring cavity /
- wavelength tuning
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