All-optical graphene modulator based on optical Kerr phase shift

By Shaoliang Yu, Xiaoqin Wu, Keren Chen, Bigeng Chen, Xin Guo, Daoxin Dai, Limin Tong, Wei-Tao Liu, Y. Shen. 2016

145 citations recorded by the source corpus.

Graphene-based optical modulators have recently attracted much attention because of their characteristic ultrafast and broadband response. Their modulation depth (MD) and overall transmittance (OT), however, are often limited by optical loss arising from interband transitions. We report here an all-optical, all-fiber optical modulator with a Mach–Zehnder interferometer structure that has significantly higher MD and OT than graphene-based loss modulators. It is based on the idea of converting optically induced phase modulation in the graphene-cladded arm of the interferometer to intensity modulation at the output of the interferometer. The device has the potential to be integrable into a photonic system in real applications.

Subfields: Atomic and Molecular Physics, and Optics, Biomedical Engineering, Electrical and Electronic Engineering

View Paper: https://www.semanticscholar.org/paper/9626c950ca838884e0eaa02ec25e3f50ff9390ea