期刊
JOURNAL OF OPTICS A-PURE AND APPLIED OPTICS
卷 11, 期 8, 页码 -出版社
IOP PUBLISHING LTD
DOI: 10.1088/1464-4258/11/8/085005
关键词
surface plasmon polaritons; all-optical switching
类别
资金
- National Natural Science Foundation of China [60778045, 60736037]
- National Research Foundation of Singapore [NRF-G-CRP 2007-01]
- Ministry of Education [ARC 3/06, RGM6/05, RGM37/06]
- Nankai University (China)
- Nanyang Technological University (Singapore)
We have numerically demonstrated an all-optical switching device based on dielectric-loaded surface plasmon polaritonic crystals with one defect mode. Under the excitation of pump beams with different intensities, the signal surface plasmon polaritons whose wavelength is in resonance with the defect mode can be switched on and off by means of modification of the effective refractive index and increasing the radiative loss in the nonlinear defect layer. The switching time is kept at picosecond level and the switching efficiency is kept at over 85% by the use of a pump pulse with peak intensity of 37 MW cm(-2) and time duration of 200 fs.
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