A compact electro-absorption modulator based on graphene photonic crystal fiber Project supported by the National Natural Science Foundation of China (Grant Nos. 61575170 and 61675176), the Key Basic Research Program of Hebei Province, China (Grant No. 16961701D), and the “Xin Rui Gong Cheng” Talent Project of Yanshan University. |
(a) The 3-dB modulation bandwidth and energy per bit |