Journal
OPTICS LETTERS
Volume 43, Issue 17, Pages 4156-4159Publisher
OPTICAL SOC AMER
DOI: 10.1364/OL.43.004156
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Funding
- National Natural Science Foundation of China (NSFC) [61475188, 61635013, 61675231, 61705257]
- Strategic Priority Research Program of the Chinese Academy of Sciences (CAS) [XDB24030600]
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We have numerically studied the optical bistability in guided-mode resonance-assisted nonlinear grating nanostructure. A low-index slot is introduced to significantly improve the confinement of light in nonlinear material. In this way, the proposed novel configuration possesses low-threshold optical switching intensity (similar to 3 MW/cm(2)), which is about 58 times lower than that of typical nonlinear grating nanostructure without the low-index slot. This bistability study provides an effective method to reduce the threshold of optical switching intensity and thus can be applied in optical logic, optical computation, and all-optical memory. (C) 2018 Optical Society of America
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