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Thin liquid film as an optical nonlinear-nonlocal medium and memory element in integrated optofluidic reservoir computer

查看全文 作　　者：Chengkuan [1]Gao;Prabhav [1]Gaur;Shimon [1]Rubin;Yeshaiahu [1]Fainman 高影响力作者 机构地区：[1]University of California,San Diego,Department of Electrical and Computer Engineering,La Jolla,California,United States高影响力机构 出　　处：《Advanced Photonics》索引2022年第4卷第4期,共12页高影响力期刊 基　　金：supported by the DARPA Defense Sciences Office NAC(HR00112090009);NLM Programs,the Office of Naval Research(ONR);the National Science Foundation(NSF),grants CBET-1704085,DMR-1707641,NSF ECCS-180789,NSF ECCS-190184,NSF ECCS-2023730;the Army Research Office(ARO);the San Diego Nanotechnology Infrastructure(SDNI);supported by the NSF National Nanotechnology Coordinated Infrastructure(grant ECCS-2025752);the Quantum Materials for Energy Efficient Neuromorphic Computing-an Energy Frontier Research Center,funded by the U.S.Department of Energy(DOE)Office of Science,Basic Energy Sciences,under award#DE-SC0019273;the Cymer Corporation。 摘　　要：Understanding light–matter interaction lies at the core of our ability to harness physical effects and to translate them into new capabilities realized in modern integrated photonics platforms.Here,we present the design and characterization of optofluidic components in an integrated photonics platform and computationally predict a series of physical effects that rely on thermocapillary-driven interaction between waveguide modes and topography changes of optically thin liquid dielectric film.Our results indicate that this coupling introduces substantial self-induced phase change and transmittance change in a single channel waveguide,transmittance through the Bragg grating waveguide,and nonlocal interaction between adjacent waveguides.We then employ the self-induced effects together with the inherent built-in finite relaxation time of the liquid film,to demonstrate that the light-driven deformation can serve as a reservoir computer capable of performing digital and analog tasks,where the gas–liquid interface operates both as a nonlinear actuator and as an optical memory element. 关 键 词：light-liquid interaction OPTOFLUIDICS NANOPHOTONICS silicon photonics reservoir computing thermocapillary effect
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