High speed graphene based optical modulators and photodetectors on silicon waveguides

我成功地设计了硅光波导上的超快石墨烯光调制器，并辅之以严格的数值模拟和RC电路表征。这一设计最终在日本应用物理学会APEX期刊上发表了一篇被接受的论文，影响系数，2.667，并承认了JSPS。除此之外，我利用之前获得的制造技术在硅波导上制作了一种集成的无源可饱和石墨烯吸收材料。我使用电子束平版印刷和湿法蚀刻工艺来开发波导。石墨烯在湿法转移中转移，使用PMMA涂层进行处理，并在电子束平版印刷中形成图案。我第一次在硅光子芯片中展示了锁模脉冲在不同长度的石墨烯中的不同行为。这是制造建议/设计的超高速石墨烯调制器的垫脚石，因为我能够成功地制造光波导、石墨烯的传输和图案。这项研究发表在日本应用物理杂志上，并对JSPS表示感谢。全调制器的制作留待以后的研究，将由我的同行接手。除了发表了2篇期刊外，我的研究还在4次会议上发表，并引用了JSPS。

I successfully designed an ultra-fast graphene optical modulator on Si waveguide, supplemented with rigorous numerical simulations and RC circuit characterization. This design culminated in an accepted paper in the APEX journal of the Japanese Society for Applied Physics, Impact Factor, 2.667, with Acknowledgment to JSPS. In addition to this, I utilized the previously obtained fabrication skills to fabricate an integrated passive saturable absorber with graphene on silicon waveguides. I used the e-beam litography and wet etch process to develop waveguides. Graphene was transfered in the wet transfer processed using a PMMA coating, and patterned in e-beam litography. For the first time I showed different behaviour of the mode locked pulse in different lengths of graphene in a Si photonic chip. This was a stepping stone in fabricating the proposed/designed ultra high speed graphene modulator as I was able to succesfully fabricate waveguides, transfer and pattern graphene. This research was published in the Japanese Journal of Applied Physics, with an acknowledgment to JSPS. The fabrication of the full modulator is left for the future research which will be taken over by my peers. In addition to 2 journal publication, my research was presented at 4 conferences, with references to JSPS.