arXiv: Optics最新文献_第5页

Learning and Avoiding Disorder in Multimode Fibers 多模光纤的学习和避免紊乱

arXiv: Optics Pub Date : 2020-10-28 DOI: 10.1103/PhysRevX.11.021060

Maxime W. Matthès, Y. Bromberg, J. de Rosny, S. Popoff

{"title":"Learning and Avoiding Disorder in Multimode Fibers","authors":"Maxime W. Matthès, Y. Bromberg, J. de Rosny, S. Popoff","doi":"10.1103/PhysRevX.11.021060","DOIUrl":"https://doi.org/10.1103/PhysRevX.11.021060","url":null,"abstract":"Multimode optical fibers (MMFs) have gained renewed interest in the past decade, emerging as a way to boost optical communication data-rates in the context of an expected saturation of current single-mode fiber-based networks. They are also attractive for endoscopic applications, offering the possibility to achieve a similar information content as multicore fibers, but with a much smaller footprint, thus reducing the invasiveness of endoscopic procedures. However, these advances are hindered by the unavoidable presence of disorder that affects the propagation of light in MMFs and limits their practical applications. We introduce here a general framework to study and avoid the effect of disorder. We experimentally find an almost complete set of optical channels that are resilient to disorder induced by strong deformations. These deformation principle modes are obtained by only exploiting measurements for weak perturbations. We explain this effect by demonstrating that, even for a high level of disorder, the propagation of light in MMFs can be characterized by just a few key properties. These results are made possible thanks to a precise and fast estimation of the modal transmission matrix of the fiber which relies on a model-based optimization using deep learning frameworks.","PeriodicalId":304443,"journal":{"name":"arXiv: Optics","volume":"40 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2020-10-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"133914274","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 37

Computational inverse design for ultra-compact single-piece metalenses free of chromatic and angular aberration 无色差和角像差的超紧凑单片超透镜的计算反设计

arXiv: Optics Pub Date : 2020-10-27 DOI: 10.1063/5.0035419

Zin Lin, C. Roques-Carmes, R. Christiansen, M. Soljačić, Steven G. Johnson

引用次数: 30

Topologically Protected Strong Coupling and Entanglement Between Distant Quantum Emitters 远距离量子发射体之间的拓扑保护强耦合和纠缠

arXiv: Optics Pub Date : 2020-10-25 DOI: 10.1103/physrevapplied.14.054007

Yujing Wang, Jun Ren, Weixuan Zhang, Lu He, Xiangdong Zhang

引用次数: 5

Analysis of carbon content in direct-write plasmonic Au structures by nanomechanical scanning absorption microscopy 用纳米机械扫描吸收显微镜分析直写等离子体金结构中的碳含量

arXiv: Optics Pub Date : 2020-10-22 DOI: 10.1063/5.0035234

Miao-Hsuan Chien, M. M. Shawrav, K. Hingerl, P. Taus, M. Schinnerl, H. Wanzenboeck, S. Schmid

引用次数: 9

Plasmonic lattice Kerker effect in ultraviolet-visible spectral range 紫外-可见光谱范围内的等离子体晶格Kerker效应

arXiv: Optics Pub Date : 2020-10-22 DOI: 10.1103/physrevb.103.035402

V. Gerasimov, A. Ershov, R. G. Bikbaev, I. Rasskazov, I. L. Isaev, P. Semina, A. Kostyukov, V. Zakomirnyi, Sergey P. Polyutov, S. Karpov

{"title":"Plasmonic lattice Kerker effect in ultraviolet-visible spectral range","authors":"V. Gerasimov, A. Ershov, R. G. Bikbaev, I. Rasskazov, I. L. Isaev, P. Semina, A. Kostyukov, V. Zakomirnyi, Sergey P. Polyutov, S. Karpov","doi":"10.1103/physrevb.103.035402","DOIUrl":"https://doi.org/10.1103/physrevb.103.035402","url":null,"abstract":"Mostly forsaken, but revived after the emergence of all-dielectric nanophotonics, the Kerker effect can be observed in a variety of nanostructures from high-index constituents with strong electric and magnetic Mie resonances. Necessary requirement for the existence of a magnetic response limits the use of generally non-magnetic conventional plasmonic nanostructures for the Kerker effect. In spite of this, we demonstrate here for the first time the emergence of the lattice Kerker effect in regular plasmonic Al nanostructures. Collective lattice oscillations emerging from delicate interplay between Rayleigh anomalies and localized surface plasmon resonances both of electric and magnetic dipoles, and electric and magnetic quadrupoles result in suppression of the backscattering in a broad spectral range. Variation of geometrical parameters of Al arrays allows for tailoring lattice Kerker effect throughout UV and visible wavelength ranges, which is close to impossible to achieve using other plasmonic or all-dielectric materials. It is argued that our results set the ground for wide ramifications in the plasmonics and further application of the Kerker effect.","PeriodicalId":304443,"journal":{"name":"arXiv: Optics","volume":"15 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2020-10-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"122341883","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 11

On-chip optical non-reciprocity through a synthetic Hall effect for photons 通过光子合成霍尔效应的片上光学非互易性

arXiv: Optics Pub Date : 2020-10-21 DOI: 10.1063/5.0034291

S. Kim, Donggyu B. Sohn, Christopher W. Peterson, G. Bahl

引用次数: 10

Simple method for mid-infrared optical frequency comb generation with dynamic offset frequency tuning 动态偏频调谐中红外光频梳生成的简单方法

arXiv: Optics Pub Date : 2020-10-19 DOI: 10.1063/5.0038496

M. Roiz, K. Kumar, J. Karhu, M. Vainio

引用次数: 9

Super-extended nanofiber-guided field for coherent interaction with hot atoms 与热原子相干相互作用的超扩展纳米纤维引导场

arXiv: Optics Pub Date : 2020-10-18 DOI: 10.1364/optica.413372

R. Finkelstein, G. Winer, David Zeev Koplovich, Or Arenfrid, T. Hoinkes, G. Guendelman, Moran Netser, E. Poem, A. Rauschenbeutel, B. Dayan, O. Firstenberg

引用次数: 3

Electric Directional Steering of Cathodoluminescence From Graphene-Based Hybrid Nanostructures 石墨烯基杂化纳米结构阴极发光的电定向控制

arXiv: Optics Pub Date : 2020-10-18 DOI: 10.1103/PhysRevApplied.15.054016

A. Ciattoni, C. Conti, A. Marini

{"title":"Electric Directional Steering of Cathodoluminescence From Graphene-Based Hybrid Nanostructures","authors":"A. Ciattoni, C. Conti, A. Marini","doi":"10.1103/PhysRevApplied.15.054016","DOIUrl":"https://doi.org/10.1103/PhysRevApplied.15.054016","url":null,"abstract":"Controlling directional emission of nanophotonic radiation sources is fundamental to tailor radiation-matter interaction and to conceive highly efficient nanophotonic devices for on-chip wireless communication and information processing. Nanoantennas coupled to quantum emitters have proven to be very efficient radiation routers, while electrical control of unidirectional emission has been achieved through inelastic tunneling of electrons. Here we prove that the radiation emitted from the interaction of a high-energy electron beam with a graphene-nanoparticle composite has beaming directions which can be made to continuously span the full circle even through small variations of the graphene Fermi energy. Emission directionality stems from the interference between the double cone shaped electron transition radiation and the nanoparticle dipolar diffraction radiation. Tunability is enabled since the interference is ruled by the nanoparticle dipole moment whose amplitude and phase are driven by the hybrid plasmonic resonances of the composite and the absolute phase of the graphene plasmonic polariton launched by the electron, respectively. The flexibility of our method provides a way to exploit graphene plasmon physics to conceive improved nanosources with ultrafast reconfigurable radiation patterns.","PeriodicalId":304443,"journal":{"name":"arXiv: Optics","volume":"130 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2020-10-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"131723151","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 3

Adaptive optical focusing through perturbed scattering media with a dynamic mutation algorithm 基于动态突变算法的扰动散射介质自适应光学聚焦

arXiv: Optics Pub Date : 2020-10-17 DOI: 10.1364/prj.412884

Huanhao Li, Chi Man Woo, T. Zhong, Zhipeng Yu, Yunqi Luo, Yuanjin Zheng, Xin Yang, Hui Hui, Puxiang Lai

{"title":"Adaptive optical focusing through perturbed scattering media with a dynamic mutation algorithm","authors":"Huanhao Li, Chi Man Woo, T. Zhong, Zhipeng Yu, Yunqi Luo, Yuanjin Zheng, Xin Yang, Hui Hui, Puxiang Lai","doi":"10.1364/prj.412884","DOIUrl":"https://doi.org/10.1364/prj.412884","url":null,"abstract":"Optical focusing through/inside scattering media, like multimode fiber and biological tissues, has significant impact in biomedicine yet considered challenging due to strong scattering nature of light. Previously, promising progress has been made, benefiting from the iterative optical wavefront shaping, with which deep-tissue high-resolution optical focusing becomes possible. Most of iterative algorithms can overcome noise perturbations but fail to effectively adapt beyond the noise, e.g. sudden strong perturbations. Re-optimizations are usually needed for significant decorrelated medium since these algorithms heavily rely on the optimization in the previous iterations. Such ineffectiveness is probably due to the absence of a metric that can gauge the deviation of the instant wavefront from the optimum compensation based on the concurrently measured optical focusing. In this study, a square rule of binary-amplitude modulation, directly relating the measured focusing performance with the error in the optimized wavefront, is theoretically proved and experimentally validated. With this simple rule, it is feasible to quantify how many pixels on the spatial light modulator incorrectly modulate the wavefront for the instant status of the medium or the whole system. As an example of application, we propose a novel algorithm, dynamic mutation algorithm, with high adaptability against perturbations by probing how far the optimization has gone toward the theoretically optimum. The diminished focus of scattered light can be effectively recovered when perturbations to the medium cause significant drop of the focusing performance, which no existing algorithms can achieve due to their inherent strong dependence on previous optimizations. With further improvement, this study may boost or inspire many applications, like high-resolution imaging and stimulation, in instable scattering environments.","PeriodicalId":304443,"journal":{"name":"arXiv: Optics","volume":"46 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2020-10-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"127995058","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 25