Li Wangzhe, Yao Jianping
Microwave Photonics Research Laboratory, School of Information Technology and Engineering University of Ottawa, Ottawa, ON, K1N 6N5, Canada.
Opt Express. 2009 Dec 21;17(26):23712-8. doi: 10.1364/OE.17.023712.
A novel approach to generating an optical frequency comb based on repeated frequency shifting is proposed and experimentally demonstrated. The frequency shifting is implemented via optical carrier suppression and single-sideband modulation using two Mach-Zehnder modulators in conjunction with a bidirectional asymmetric Mach-Zehnder interferometer with wavelength-shifted transmission spectra along the opposite directions. A theoretical analysis is performed, which is confirmed by a proof-of-concept experiment. A stable optical comb covering a spectral range of 0.18 THz is generated.
提出了一种基于重复频率偏移产生光频梳的新方法，并进行了实验验证。频率偏移通过光载波抑制和单边带调制实现，使用两个马赫-曾德尔调制器与一个双向非对称马赫-曾德尔干涉仪相结合，该干涉仪具有沿相反方向波长偏移的传输光谱。进行了理论分析，并通过概念验证实验得到了证实。产生了一个覆盖0.18太赫兹光谱范围的稳定光梳。
