Stabilization of self-mode-locked quantum dash lasers by symmetric dual-loop optical feedback.
Stabilization of self-mode-locked quantum dash lasers by symmetric dual-loop optical feedback.
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通过对称双环光学反馈稳定自锁模量子冲激激光器。
DOI：
10.1364/oe.26.004581
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发表时间：
2017
期刊：
影响因子：
3.8
通讯作者：
J. McInerney
中科院分区：
文献类型：
--
作者：
H. Asghar;Wei Wei;Pramod Kumar;E. Sooudi;J. McInerney
报道了对称双环光反馈对1550 nm自锁模两段量子短脉冲激光器射频线宽和时间抖动的影响的实验研究。研究了各种反馈方案，并确定了单环和对称双环反馈的最佳水平，以获得最窄的射频线宽和低的定时抖动。研究了具有平衡反馈比和不平衡反馈比的两种对称双环结构。我们证明，与单环和平衡对称双环结构不同，非平衡对称双环反馈具有内腔谐振和外环的精细延迟调谐，可以在很大的延迟范围内提供最窄的射频线宽和减少的定时抖动。这种反馈长度为80m和140m的配置与自由运行相比，在最宽的延迟范围内将射频线宽分别缩小了∼4-67倍和∼10-100倍。对于对称双环反馈，确定了反馈环中不同功率分配比对系统性能的影响。我们的结果表明，对称双环反馈在减小射频线宽和定时抖动方面明显比单环反馈更有效，并且对时延相位的敏感度要低得多，这使得这种技术非常适合于稳健性和对准容错至关重要的应用。
We report experimental studies of the influence of symmetric dual-loop optical feedback on the RF linewidth and timing jitter of self-mode-locked two-section quantum dash lasers emitting at 1550 nm. Various feedback schemes were investigated and optimum levels determined for narrowest RF linewidth and low timing jitter, for single-loop and symmetric dual-loop feedback. Two symmetric dual-loop configurations, with balanced and unbalanced feedback ratios, were studied. We demonstrate that unbalanced symmetric dual loop feedback, with the inner cavity resonant and fine delay tuning of the outer loop, gives the narrowest RF linewidth and reduced timing jitter over a wide range of delay, unlike single and balanced symmetric dual-loop configurations. This configuration with feedback lengths of 80 and 140 m narrows the RF linewidth by ∼ 4-67x and ∼ 10-100x, respectively, across the widest delay range, compared to free-running. For symmetric dual-loop feedback, the influence of different power split ratios through the feedback loops was determined. Our results show that symmetric dual-loop feedback is markedly more effective than single-loop feedback in reducing RF linewidth and timing jitter, and is much less sensitive to delay phase, making this technique ideal for applications where robustness and alignment tolerance are essential.
影响因子：
3.8
作者：
M. Haji;L. Hou;A. Kelly;J. Akbar;J. Marsh;J. Arnold;C. Ironside
通讯作者：
M. Haji;L. Hou;A. Kelly;J. Akbar;J. Marsh;J. Arnold;C. Ironside
影响因子：
2.4
作者：
Jaurigue, Lina;Nikiforov, Oleg;Luedge, Kathy
通讯作者：
Luedge, Kathy
影响因子：
3.8
作者：
Oleg Nikiforov;L. Jaurigue;L. Drzewietzki;K. Lüdge;S. Breuer
通讯作者：
Oleg Nikiforov;L. Jaurigue;L. Drzewietzki;K. Lüdge;S. Breuer