Inoue Takashi, Hiroishi Jiro, Yagi Takeshi, Mimura Yu
Fitel Photonics Laboratoy, Furukawa Electric Co., Ltd., Ichihara, Chiba, Japan.
Opt Lett. 2007 Jun 1;32(11):1596-8. doi: 10.1364/ol.32.001596.
We propose and demonstrate generation of an in-phase optical pulse train from an optical beat signal. The proposed method is based on four-wave mixing occurring between the two continuous waves of the beat signal and on spectral filtering to shape the spectrum to be symmetric about the carrier frequency. We perform an experiment to verify the proposed method and obtain a 1.5 ps width in-phase pulse train from a 160 GHz beat signal. Furthermore, we employ a pulse compression scheme to reshape and compress the obtained pulse train, and we show that a 160 GHz repeating, 0.7 ps FWHM, nearly transform-limited, in-phase sech pulse train is successfully generated.
我们提出并演示了从光拍频信号生成同相光脉冲序列。所提出的方法基于拍频信号的两个连续波之间发生的四波混频以及基于频谱滤波来将频谱整形为关于载波频率对称。我们进行了一项实验以验证所提出的方法，并从160GHz拍频信号获得了宽度为1.5ps的同相脉冲序列。此外，我们采用脉冲压缩方案对获得的脉冲序列进行整形和压缩，并且我们表明成功生成了重复频率为160GHz、半高宽为0.7ps、几乎是变换极限的同相双曲正割脉冲序列。
