在一个集成的非线性布拉格格中,从连续波光中产生皮秒脉冲.
Ju Won Choi1, Byoung-Uk Sohn1, Ezgi Sahin1
1Photonics Devices and System Group, Singapore University of Technology and Design, 8 Somapah Rd, Singapore 487372, Singapore.
Nanophotonics (Berlin, Germany)
|December 16, 2024
概括
研究人员使用光子芯片中的十字相调制从连续波光中产生了皮秒脉冲列车. 这种新的方法克服了来自低功率信号的基于芯片的脉冲生成方面的挑战.
科学领域:
- 光子学和光学工程 光子学和光学工程
- 非线性光学是非线性光学.
- 综合光子学 综合光子学
背景情况:
- 从连续波 (CW) 光中生成光脉冲列车对于高重复率超短脉冲生成至关重要.
- 现有的方法在光纤方面已经很成熟,但由于相互作用长度短和分散限制,在光子芯片方面面临挑战.
- 从芯片上的弱CW光实现高效的脉冲列车生成仍然是一个重大障碍.
研究的目的:
- 展示一种新方法,通过光子芯片上的低功率连续波光产生皮秒脉冲列车.
- 为了研究脉冲列车生成的基础物理在一个超丰富的化平台.
- 为了克服集成光子设备中短交互长度和分散控制的局限性.
主要方法:
- 通过共传播脉冲 (3.7W峰值功率) 诱导的利用交叉相调制 (XPM).
- 采用超富化 (USRN) 网格波导来增强非线性相互作用.
- 进行实验测量和理论建模,以分析脉冲生成动态.
主要成果:
- 从低功率CW信号成功生成了持续时间低至18皮秒 (ps) 的光学脉冲列车.
- 证明脉冲列车生成机制依赖于XPM诱导的光谱扩展和随后的分散重相.
- 通过理论模拟验证了实验结果,证实了拟议方法的有效性.
结论:
- 这项工作提出了一种新且有效的方法,用于在光子集成电路中从低功率CW光产生皮秒脉冲列车.
- 展示的方法,利用USRN波导中的XPM,为芯片上超短脉冲生成提供了可行的解决方案.
- 这一进步为在紧的光子设备中简化生成高重复率脉冲铺平了道路.
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