论文标题
石墨烯在硅调节剂上
Graphene on Silicon Modulators
论文作者
论文摘要
石墨烯是具有具有吸引力的电子和光电特性的2D材料。这是一种零带盖的材料，在动量空间中以单点（狄拉克点）遇到的价值和传统带。可以通过通过外部电场移动费米水平能量来改变其电导率。这种重要的特性决定了光频率下的宽带和可调吸收。此外，它的电导率是一个复杂的数量，即石墨烯既表现出电吸附又表现出电折扣性可调性，这是光子应用的有趣特性。例如，它可以作为硅波导以实现有效的检测器，开关和调节器的活性材料组合。在本文中，我们回顾了我们在现场的结果，重点是集成在硅光子平台上的基于石墨烯的光学调节器。据报道，在单层和双层电容调制器的制造中获得的结果显示出强度和相位调节，由于正确的信号chirp和高达50 GB/s的操作，生成的信号对色散的弹性是弹性的。
Graphene is a 2D material with appealing electronic and optoelectronic properties. It is a zero-bandgap material with valence and conduction bands meeting in a single point (Dirac point) in the momentum space. Its conductivity can be changed by shifting the Fermi level energy via an external electric field. This important property determines broadband and tunable absorption at optical frequencies. Moreover, its conductivity is a complex quantity, i.e. Graphene exhibits both electro-absorption and electro-refraction tunability, and this is an intriguing property for photonic applications. For example, it can be combined as an active material for silicon waveguides to realize efficient detectors, switches and modulators. In this paper, we review our results in the field, focusing on graphene-based optical modulators integrated on Silicon photonic platforms. Results obtained in the fabrication of single- and double-layer capacitive modulators are reported showing intensity and phase modulation, resilience of the generated signals to chromatic dispersion because of proper signal chirp and operation up to 50 Gb/s.
