期刊
NANOTECHNOLOGY
卷 23, 期 44, 页码 -出版社
IOP PUBLISHING LTD
DOI: 10.1088/0957-4484/23/44/444009
关键词
-
资金
- National Natural Science Foundation of China [10874239, 10604066]
We have proposed and numerically investigated an all-optical switch based on a metal-insulator-metal waveguide with graded nonlinear plasmonic gratings. The influences of grating depth and refractive index of a Kerr nonlinear medium on the transmission of the switch are exactly analyzed by utilizing transmission line theory. The finite-difference time-domain simulation results show that the highly compact structure possesses excellent switch function by tuning the incident electric field intensity. In addition, the simulation results show that this all-optical switch has an ultrawide operating frequency regime and femtosecond-scale response time (similar to 130 fs). Such a switch can find potential applications for all-optical signal processing and optical communication.
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