In this paper, we propose and investigate a novel scheme to generate optical frequency comb (OFC) by using a three-stage generator, which is based on optical-injection-induced dynamics cascaded by subharmonic electro-optic modulation and four wave mixing (FWM) effect. A primary seed OFC is rooted from the nonlinear dynamics in the optically injected semiconductor laser, and its performance is improved using a two-stage booster based on subharmonic electro-optic modulation and FWM effect. The comb spacing can be easily tuned through adjusting that of the primary seed OFC, or through electro-optic modulation by use of subharmonics with different orders. Moreover, it becomes stabilized because the phase relationship between comb teeth can be fixed in the process of subharmonic electro-optic modulation. Its optical spectrum continues to be broadened in the following FWM process. Finally, robust OFCs with comb spacing of 4GHz and comb teeth number of 23, and comb spacing of 5GHz, comb teeth number of 21 are experimentally demonstrated.

中文翻译：

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使用三级光学非线性动态生成鲁棒的光学频率梳

在本文中，我们提出并研究了一种使用三级发生器产生光频梳 (OFC) 的新方案，该方案基于由次谐波电光调制和四波混频 (FWM) 级联的光注入诱导动力学。 ） 影响。初级种子 OFC 源于光注入半导体激光器的非线性动力学，并使用基于次谐波电光调制和 FWM 效应的两级增强器提高其性能。通过调整初级种子 OFC 的频率，或通过使用不同阶次的次谐波进行电光调制，可以很容易地调整梳间距。此外，由于在次谐波电光调制过程中可以固定梳齿之间的相位关系，因此它变得稳定。在接下来的 FWM 过程中，它的光谱继续变宽。最后，实验证明了梳间距为 4GHz、梳齿数为 23、梳间距为 5GHz、梳齿数为 21 的鲁棒 OFC。