Sensitivity enhanced all-optical switching using prism-grating coupled surface plasmon modes |
| |
| Authors: | Junxue Chen Xiaolei Wang Chuncong Chen Hai Ming |
| |
| Institution: | a Department of Physics, Anhui Key Laboratory of Optoelectronic Science and Technology, University of Science and Technology of China, Hefei, Anhui 230026, PR China
b Electro-Optics Program, University of Dayton, 300 College Park, Dayton, OH 45469, USA |
| |
| Abstract: | A sensitivity enhanced all-optical-switch design using prism-sinusoidal grating coupled surface plasmon modes is demonstrated numerically. Owing to the simultaneous excitation of surface plasmons for the pump and signal at the interface between a nonlinear waveguide layer and a metal layer, a sensitivity enhanced bistability effect in the structure can be obtained. The nonlinear refractive index of the waveguide layer experiences an abrupt change of the local pump field owing to this bistability effect. Such a characteristic greatly improves the performance of optical switch by reducing the threshold pump intensity. An all-optical-switch design with a pump threshold as low as 0.9 GW/cm2 is presented. |
| |
| Keywords: | 73 20 Mf 42 65 Pc 42 65 Wi |
| 本文献已被 ScienceDirect 等数据库收录！ |
|
