Locking bandwidth of optically injected Fabry-Perot semiconductor lasers for high injection strengths

Locking bandwidth of optically injected Fabry-Perot semiconductor lasers for high injection strengths
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锁定光注入法布里-珀罗半导体激光器的带宽以实现高注入强度

DOI:
10.1049/iet-opt:20080029
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发表时间:
2008
影响因子:
1.6
通讯作者:
Stolz C
Stolz C
中科院分区:
计算机科学4区
文献类型:
--
作者:
Stolz C

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作者将使用商业软件程序的模拟结果与光注入 FP 半导体激光器的速率方程 (RE) 和法布里-珀罗 (FP) 模型的解进行了比较,以实现高注入强度(主激光器和从激光器之间的注入比高于 0 dB)。对于线宽增强因子(α因子)为0和3的情况,锁定带宽与RE模型进行比较,在α因子为0的情况下,结果也与FP模型进行比较。结果发现,高注入强度的 RE 模型不能很好地描述锁定带宽,而 FP 模型与我们的模拟结果非常吻合。此外,还显示了不同注入强度和不同失谐值时光功率和电子浓度的纵向变化。对于 3 的 α 因子,这些特性的空间变化对于更高的注入强度变得不对称,并且随着失谐的增加,发现当通过锁定区域接近下锁定边界时,它们表现出减小的波动。因此,为了获得高注射强度,考虑空间变化非常重要。
The authors compare simulated results using a commercial software program with solutions of the rate equation (RE) and Fabry–Perot (FP) models of an optically injected FP semiconductor laser for high injection strengths (with injection ratios between the master and slave lasers above 0 dB). For linewidth enhancement factors (α-factors) of 0 and 3, the locking bandwidth is compared with the RE model and in the case of an α-factor of 0, the results are also compared with the FP model. It is found that the RE model for high injection strengths does not describe the locking bandwidth very well, whereas the FP model gives good agreement with our simulated results. Additionally, the longitudinal variation of optical power and electron concentration are shown for different injection strengths and different detuning values. For an α-factor of 3, the spatial variations of these properties become asymmetrical for higher injection strengths and with an increase in detuning, they are found to exhibit decreased fluctuations when the lower locking boundary is approached through the locking region. Therefore it is important to take spatial variation into account for high injection strengths.
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