Demonstration of Ultrafast All-Optical Switching: (A) Schematic Setup and (B) Switching Performance (IMAGE)

Tokyo Institute of Technology

Demonstration of Ultrafast All-Optical Switching: (A) Schematic Setup and (B) Switching Performance

Caption

The signal light is switched (on/off) with control light in all-optical switches (Fig. 3a). In our switch, the control light induces a nonlinear optical effect of graphene; i.e., it changes the degree of absorption by graphene. Figure 3b indicates that a switching time of 260 fs can be achieved with a switching energy of 35 fJ.

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NTT, Tokyo Tech

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