期刊
LASER & PHOTONICS REVIEWS
卷 11, 期 5, 页码 -出版社
WILEY-V C H VERLAG GMBH
DOI: 10.1002/lpor.201700042
关键词
On-chip remotely-triggered all-optical switching; Multicomponent nanocomposite; Third-order nonlinear Kerr effect; Epsilon-near-zero material
资金
- 973 Program of China [2013CB328704, 2014CB921003]
- National Natural Science Foundation of China [11225417, 61475003, 11134001, 11527901, 11121091, 90921008]
- National Postdoctoral Program for Innovative Talents [BX201700011]
On-chip-triggered all-optical switching is a key component of ultrahigh-speed and ultrawide-band information processing chips. This switching technique, the operating states of which are triggered by a remote control light, paves the way for the realization of cascaded and complicated logic processing circuits and quantum solid chips. Here, a strategy is reported to realize on-chip remotely-triggered, ultralow-power, ultrafast, and nanoscale all-optical switching with high switching efficiency in integrated photonic circuits. It is based on control-light induced dynamic modulation of the coupling properties of two remotely-coupled silicon photonic crystal nanocavities, and extremely large optical nonlinearity enhancement associated with epsilon-near-zero multi-component nanocomposite achieved through dispersion engineering. Compared with previous reports of on-chip direct-triggered all-optical switching, the threshold control intensity, 560 kW/cm(2), is reduced by four orders of magnitude, while maintaining ultrafast switching time of 15 ps. This not only provides a strategy to construct photonic materials with ultrafast and large third-order nonlinearity, but also offers an on-chip platform for the fundamental study of nonlinear optics.
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