Narrow-linewidth single-frequency photonic microwave generation in optically injected semiconductor lasers with filtered optical feedback.
Narrow-linewidth single-frequency photonic microwave generation in optically injected semiconductor lasers with filtered optical feedback.
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DOI：
10.1364/ol.43.004184
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发表时间：
2018-08
期刊：
影响因子：
3.6
通讯作者：
Chenpeng Xue;Songkun Ji;Anbang Wang;N. Jiang;K. Qiu;Yanhua Hong
中科院分区：
文献类型：
--
作者：
Chenpeng Xue;Songkun Ji;Anbang Wang;N. Jiang;K. Qiu;Yanhua Hong
提出了一种利用光注入半导体激光器和滤波光反馈产生窄线宽单频光子微波的方案。滤波后的反馈来自单个反馈环路，该反馈环路包括窄带通滤波器。在滤波反馈的作用下，产生的微波线宽从22.4MHz显著减小到9.0kHz，边峰抑制达28dB。与传统的单反馈结构相比，该方案在线宽减小和侧峰抑制方面具有上级性能。与复杂的双反馈设置相比，该方案也取得了更好的结果。滤波光反馈的优良性能的机制是滤波光反馈可以有效地限制外腔模式并稳定周期一动力学。此外，微波线宽随着滤波器宽度的增加而减小，直到达到最佳滤波器宽度。此外，使用滤波的光反馈的光子微波的线宽减小和侧峰抑制对滤波器中心频率和半导体激光器的自激频率之间的频率失谐相对不敏感。
A narrow-linewidth single-frequency photonic-microwave-generation scheme using an optically injected semiconductor laser with a filtered optical feedback has been proposed. The filtered feedback comes from a single feedback loop, which includes a narrow bandpass filter. With the filtered feedback, the linewidth of the generated microwave can be significantly reduced from 22.4 MHz to 9.0 kHz, with the side peaks suppression of 28 dB. The proposed scheme shows superior performance compared to the conventional single-feedback configuration in terms of linewidth reduction and side peaks suppression. The proposed scheme also achieves better results compared to the complex dual-feedback setting. The mechanism for a better performance of filtered optical feedback is that the filtered feedback can effectively limit the external cavity modes and stabilize the period-one dynamics. In addition, the microwave linewidth decreases with the increase of the filter width until the optimized filter width is reached. Furthermore, the linewidth reduction and the side peaks suppression of a photonic microwave using filtered optical feedback is relatively insensitive to the frequency detuning between the filter center frequency and the free-running frequency of the semiconductor laser.