[12] S. Y. Set, H. Yaguchi, Y. Tanaka, M. Jablonski, Y. Sakakibara, A. Rozhin, M. Tokumoto, H. Kataura, Y. Achiba, K. Kikuchi. Mode-locked fiber lasers based on a saturable absorber incorporating carbon nanotubes. Optical Fiber Communications Conference (OFC), PD44(2003).
[19] A. K. Geim, K. S. Novoselov. The rise of graphene. Nat. Mater., 6, 183-191(2007).