10-Gbps 20-km Feedback-Resistant Transmission Using Directly Modulated Quantum-Dot Lasers
10-Gbps 20-km Feedback-Resistant Transmission Using Directly Modulated Quantum-Dot Lasers
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DOI：
10.1109/lpt.2020.3025209
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发表时间：
2020-11
影响因子：
2.6
通讯作者：
Yiming He;Zhongkai Zhang;Zunren Lv;Tao Yang;D. Lu;Lingjuan Zhao
中科院分区：
文献类型：
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作者：
Yiming He;Zhongkai Zhang;Zunren Lv;Tao Yang;D. Lu;Lingjuan Zhao
在这封信中，我们报告了1.3- $\mu \text{m}$ InAs/GaAs直接调制量子点激光器（QDL）在强反馈下的动力学和性能。在直接调制速度为10 Gbps的情况下，实现了QDL在−12 dB反馈电平下的无差错背靠背工作。在最大光反馈电平为- 9 dB的情况下，光纤传输超过20 km，并且在误码率（BER）为10 - 3的情况下，功率损失小于1 dB。将QDL激光器的性能与具有相似参数的直接调制量子阱激光器（QWL）进行了比较，结果表明QDL在反馈电阻方面具有明显的优势。
In this letter, we report the dynamics and performance of a 1.3- $\mu \text{m}$ InAs/GaAs directly modulated quantum-dot laser (QDL) under strong feedback. At a direct modulation speed of 10 Gbps, error-free back-to-back operation of the QDL under a feedback level of −12 dB was realized. Feedback-resistant fiber transmission over 20 km under a maximum optical feedback level of −9 dB was also demonstrated with a power penalty of less than 1 dB at a bit error ratio (BER) of 10−3. The performance of the QDL was compared with directly modulated quantum-well laser (QWL) with similar parameters, showing a clear advantage in feedback resistance of QDL.