Generation of tunable and ultra-broadband microwave frequency combs based on a semiconductor laser subject to pulse injection from a current modulated laser
Generation of tunable and ultra-broadband microwave frequency combs based on a semiconductor laser subject to pulse injection from a current modulated laser
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基于受电流调制激光器脉冲注入的半导体激光器产生可调谐超宽带微波频率梳
DOI：
10.1109/jphot.2018.2883111
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发表时间：
2018
影响因子：
2.4
通讯作者：
Zheng-Mao Wu
中科院分区：
文献类型：
--
作者：
Li Fan;Guang-Qiong Xia;Tao Deng;Xi Tang;Xiao-Dong Lin;Zi-Ye Gao;Zheng-Mao Wu
我们通过实验证明并描述了基于从激光器（SL）的可调谐和超宽带微波频率梳（mfc）的产生，该激光器受到电流调制主激光器（ML）的常规脉冲注入。在调制频率<斜体>f<sub>m</sub></斜体> = 1.2 GHz，调制功率<斜体>P<sub>m</斜体> =</斜体> 22 dBm的条件下，将电流调制的ML驱动为规则脉冲状态，得到带宽为14.4 GHz、幅度变化在±5 dB范围内的种子MFC。然后将这种种子MFC注入到SL中，以产生具有更高性能的最终MFC。当调谐频率<斜体>f<sub>i</sub></斜体> = 0 GHz，优化注入功率<斜体>P<sub>i</斜体></斜体> = 2060 <斜体>μ</斜体>W时，最终的MFC带宽提高到33.6 GHz，该带宽内MFC各梳线的单边带相位噪声可降至-90.9 dBc/Hz@10 kHz以下。此外，还分析了<斜体>P<sub>i</sub></斜体>和<斜体>f<sub>m</sub></斜体>对MFC带宽的影响。实验结果与数值模拟结果有一定的吻合。
We have experimentally demonstrated and characterized the generation of tunable and ultra-broadband microwave frequency combs (MFCs) based on a slave laser (SL) subject to regular pulse injection from a current modulated master laser (ML). Under modulation frequency <italic>f<sub>m</sub></italic> = 1.2 GHz and modulation power <italic>P<sub>m</sub> =</italic> 22 dBm, the current modulated ML is driven into a regular pulse state, and a seed MFC with 14.4 GHz bandwidth within a ±5 dB amplitude variation can be obtained. Such a seed MFC is then injected into the SL for producing final MFC with higher performances. For a fixed detuning frequency <italic>f<sub>i</sub></italic> = 0 GHz and optimized injection power <italic>P<sub>i</sub></italic> = 2060 <italic>μ</italic>W, the bandwidth of the final MFC is increased to 33.6 GHz, and the single-sideband phase noises of all comb lines of the MFC within the bandwidth can be decreased to below –90.9 dBc/Hz@10 kHz. Additionally, the influences of <italic>P<sub>i</sub></italic> and <italic>f<sub>m</sub></italic> on the MFC bandwidth are also analyzed. The experimental results are in agreement with numerical simulations to a certain extent.