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Femtojoule electro-optic modulation using a silicon– organic hybrid device

Light(Science & Applications) 2015年第1期4卷 483-490页

作者： Sebastian Koeber Robert Palmer Matthias Lauermann Wolfgang Heni Delwin L Elder Dietmar Korn Markus Woessner Luca Alloatti Swen Koenig Philipp C Schindler Hui Yu Wim Bogaerts Larry R Dalton Wolfgang Freude Juerg Leuthold Christian Koos Institute of Photonics and Quantum electronics(IPQ)and Institute of Microstructure Technology(IMT) Karlsruhe Institute of Technology(KIT)76131 KarlsruheGermany Now with:Institute of electromagnetic Fields Swiss Federal Institute of Technology(ETH)ZurichSwitzerland University of Washington Department of ChemistrySeattleWA 98195-1700USA Now with:Massachusetts Institute of Technology Research Lab of Electronics(RLE)CambridgeMA 02139USA Now with:Infinera Corporation SunnyvaleCAUSA Ghent University–IMEC Photonics Research GroupDepartment of Information TechnologyGentBelgium Now with:Department of Information Science and electronic Engineering Zhejiang UniversityHangzhou 310027China

Energy-efficient electro-optic modulators are at the heart of short-reach optical interconnects,and silicon photonics is considered the leading technology for realizing such ***,the performance of all-silicon devices is limited by intrinsic material *** particular,the absence of linear electro-optic effects in silicon renders the integration of energy-efficient photonic–electronic interfaces ***–organic hybrid(SOH)integration can overcome these limitations by combining nanophotonic silicon waveguides with organic cladding materials,thereby offering the prospect of designing optical properties by molecular *** this paper,we demonstrate an SOH Mach–Zehnder modulator with unprecedented efficiency:the 1-mm-long device consumes only 0.7 fJ bit^(-1) to generate a 12.5 Gbit s^(-1) data stream with a bit-error ratio below the threshold for hard-decision forward-error *** power consumption represents the lowest value demonstrated for a non-resonant Mach–Zehnder modulator in any material *** is enabled by a novel class of organic electro-optic materials that are designed for high chromophore density and enhanced molecular *** device features an electro-optic coefficient of r33<180 pm V^(-1) and can be operated at data rates of up to 40 Gbit s^(-1).

关键词： electro-optic materials electro-optic modulation nonlinear organic materials silicon-organic hybrid

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electro-optic lithium niobate metasurfaces

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Science China(Physics,Mechanics & Astronomy) 2021年第4期64卷 28-33页

作者： BoFeng Gao MengXin Ren Wei Wu Wei Cai JingJun Xu The Key Laboratory of Weak-Light Nonlinear Photonics Ministry of EducationSchool of Physics and TEDA Applied Physics InstituteNankai UniversityTianjin 300071China Collaborative Innovation Center of Extreme optics Shanxi UniversityTaiyuan 030006China

Many applications of metasurfaces require an ability to dynamically change their properties in the time domain. Electrical tuning techniques are of particular interest, since they pave a way to on-chip integration of metasurfaces with optoelectronic *** this work, we propose and experimentally demonstrate an electro-optic lithium niobate(EO-LN) metasurface that shows dynamic modulations to phase retardation of transmitted light. Quasi-bound states in the continuum(QBIC) are observed from this metasurface. By applying external electric voltages, the refractive index of lithium niobate(LN) is changed by Pockels EO nonlinearity, leading to efficient phase modulations to the transmitted light around the QBIC wavelength. The EO-LN metasurface developed in this study opens up new routes for potential applications in the field of displaying, pulse shaping, and spatial light modulating.

关键词： lithium niobate metasurfaces electro-optic modulation bound states in the continuum resonance

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High-speed autopolarization synchronization modulation three-dimensional structured illumination microscopy

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Advanced Photonics Nexus 2024年第1期3卷 1-10页

作者： Yaning Li Ruijie Cao Wei Ren Yunzhe Fu Yiwei Hou Suyi Zhong Karl Zhanghao Meiqi Li Peng Xi Peking University College of Future TechnologyDepartment of Biomedical EngineeringBeijingChina Peking University National Biomedical Imaging CenterBeijingChina

In recent years,notable progress has been achieved in both the hardware and algorithms of structured illumination microscopy(SIM).Nevertheless,the advancement of three-dimensional structured illumination microscopy(3DSIM)has been impeded by challenges arising from the speed and intricacy of polarization *** introduce a high-speed modulation 3DSIM system,leveraging the polarizationmaintaining and modulation capabilities of a digital micromirror device(DMD)in conjunction with an electrooptic *** DMD-3DSIM system yields a twofold enhancement in both lateral(133 nm)and axial(300 nm)resolution compared to wide-field imaging and can acquire a data set comprising 29 sections of 1024 pixels×1024 pixels,with 15 ms exposure time and 6.75 s per *** versatility of the DMD-3DSIM approach was exemplified through the imaging of various specimens,including fluorescent beads,nuclear pores,microtubules,actin filaments,and mitochondria within cells,as well as plant and animal ***,polarized 3DSIM elucidated the orientation of actin ***,the implementation of diverse deconvolution algorithms further enhances 3D *** DMD-based 3DSIM system presents a rapid and reliable methodology for investigating biomedical phenomena,boasting capabilities encompassing 3D superresolution,fast temporal resolution,and polarization imaging.

关键词： digital micromirror device electro-optic modulation polarization three-dimensional structured illumination microscopy

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Recent progresses on optical arbitrary waveform generation

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Frontiers of Optoelectronics 2014年第3期7卷 359-375页

作者： Ming LI Jose AZANA Ninghua ZHU Jianping YAO State Key Laboratory on Integrated Optoelectronics Institute of Semiconductors Chinese Academy of Sciences Beijing 100083 China Instimt National de la Recherche Scientifique - Energie Materiaux et Telecommunications (INRS-EMT) 1650 boulevard Lionel-Boulet Varennes QC J3X 1S2 Canada Microwave Photonics Research Laboratory School of Electrical Engineering and Computer Science University of Ottawa ON K1N 6N5 Canada

This paper reviews recent progresses on optical arbitrary waveform generation （AWG） techniques, which could be used to break the speed and bandwidth bottle- necks of electronics technologies for waveform generation. The main enabling techniques for optically generating optical and microwave waveforms are introduced and reviewed in this paper, such as wavelength-to-time mapping techniques, space-to-time mapping techniques, temporal pulse shaping （TPS） system, optoelectronics oscillator （OEO）, programmable optical filters, optical differentiator and integrator and versatile electro-optic modulation implementations. The main advantages and challenges of these optical AWG techniques are also discussed.

关键词： optical arbitrary waveform generation (AWG) wavelength-to-time mapping optoelectronics oscillator (OEO) temporal pulse shaping (TPS) system optical differentiator and integrator electro-optic modulation

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