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Generation of a flat optical frequency comb based on a cascaded polarization modulator and phase modulator

机译:基于级联偏振调制器和相位调制器的平坦光学频率梳的生成

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摘要

A scheme to generate a flat optical frequency comb (OFC) with a fixed phase relationship between the comb lines is proposed and experimentally demonstrated based on a cascaded polarization modulator (PolM) and phase modulator. Because the PolM introduces more controllable parameters compared with the conventional intensity modulator, 9, 11, and 13 comb lines can be generated with relatively low RF powers, or 15, 17, and 19 comb lines can be obtained if high RF powers are applied. The experimentally generated 9, 11, and 13 OFCs have a flatness of 1, 1.3, and 2.1 dB, respectively. The scheme requires no DC bias to the modulators, no optical filter, and no frequency divider or multiplier, which is simple and stable.
机译:提出了一种在级联偏振调制器(PolM)和相位调制器的基础上产生具有固定相位关系的平面光学频率梳(OFC)的方案,并进行了实验证明。因为与传统的强度调制器相比,PolM引入了更多可控制的参数,所以可以使用相对较低的RF功率生成9、11和13梳状线,如果施加高RF功率,则可以获得15、17和19梳状线。实验生成的9、11和13个OFC的平坦度分别为1、1.3和2.1 dB。该方案不需要调制器的直流偏置,不需要光学滤波器,也不需要分频器或乘法器,这是简单而稳定的。

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