In this letter, we present an experimental demonstration of a Si optical modulator based on Fano-like resonance, which is the first of its kind in the literature. The Fano-like resonance is obtained through weak coupling between two optical resonators in the prototype device and a PN junction is designed for carrier-depletion type electro-refractive modulation. 20 Gb/s data rate on-off keying (OOK) is obtained experimentally on the prototype device. Compared with a ring resonator modulator with a similar optical resonance linewidth, a Fano-like resonance based modulator can potentially have a higher extinction ratio (ER) because the Fano-like resonance has an asymmetric spectrum line shape and the line shape on one side can be sharper than the Lorentz resonance line shape of a ring resonator.

中文翻译：

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基于类法诺共振的硅光调制器


在这封信中，我们提出了基于类法诺共振的硅光调制器的实验演示，这是文献中的第一个。类 Fano 谐振是通过原型器件中两个光学谐振器之间的弱耦合获得的，并且 PN 结设计用于载流子耗尽型电折射调制。 20 Gb/s 数据速率开关键控 (OOK) 是在原型设备上通过实验获得的。与具有相似光学谐振线宽的环形谐振器调制器相比，基于类 Fano 谐振的调制器可能具有更高的消光比 (ER)，因为类 Fano 谐振具有不对称的谱线形状，并且一侧的线形状可以比环形谐振器的洛伦兹谐振线形状更尖锐。