Optics express最新文献

How many surfaces can you distinguish by color? Real environmental lighting increases discriminability of surface colors. 您能通过颜色分辨出多少种表面？真实环境照明可提高表面颜色的辨别能力。

IF 3.2 2区物理与天体物理

Optics express Pub Date : 2024-09-23 Epub Date: 2024-09-09 DOI: 10.1364/OE.531468

Takuma Morimoto, JoãO M M Linhares, Sérgio M C Nascimento, Hannah E Smithson

引用次数: 0

Polarization-independent and high-efficiency 2D dielectric transmission grating under Littrow incidence 利特罗入射条件下与偏振无关的高效二维介质透射光栅

IF 3.8 2区物理与天体物理

Optics express Pub Date : 2024-09-18 DOI: 10.1364/oe.537907

Mingle Qiao, Yongfang Xie, Shihao Kang, Jin Wang, Changhe Zhou

引用次数: 0

Diffractive microoptics in porous silicon oxide by grayscale lithography 利用灰度光刻技术在多孔氧化硅中实现衍射微光学

IF 3.8 2区物理与天体物理

Optics express Pub Date : 2024-09-18 DOI: 10.1364/oe.538142

Leander Siegle, Dajie Xie, Corey A. Richards, Paul V. Braun, Harald Giessen

{"title":"Diffractive microoptics in porous silicon oxide by grayscale lithography","authors":"Leander Siegle, Dajie Xie, Corey A. Richards, Paul V. Braun, Harald Giessen","doi":"10.1364/oe.538142","DOIUrl":"https://doi.org/10.1364/oe.538142","url":null,"abstract":"We demonstrate focusing as well as imaging using diffractive microoptics, manufactured by two-photon polymerization grayscale lithography (2GL), that have been 3D printed into porous silicon oxide. While typical doublet lens systems require support structures that hold the lenses in place, our optics are held by the porous media itself, decreasing both the fabrication time and design constraints while increasing the optically active area. Compared to the typical two-photon polymerization fabrication process, 2GL offers better shape accuracy while simultaneously increasing throughput. To showcase 2GL manufactured optics in porous media, we fabricate singlet diffractive lenses with a diameter of 500 µm and numerical apertures of up to 0.6. We measure the intensity distribution in the focal plane, and along the optical axis. Furthermore, we design and fabricate a doublet lens system for imaging purposes with a diameter of 600 µm and thinner than 60 µm. We examine the imaging performance with a USAF 1951 resolution test chart and determine the resolution to be 287 lp/mm. 3D printing in porous SiO2 thus holds great promise for future complex and unconventional microoptical solutions.","PeriodicalId":19691,"journal":{"name":"Optics express","volume":"5 1","pages":""},"PeriodicalIF":3.8,"publicationDate":"2024-09-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142250767","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"物理与天体物理","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Mid-infrared ultrafast soliton molecules from a few-cycle Cr:ZnS laser 来自几周期 Cr:ZnS 激光器的中红外超快孤子分子

IF 3.8 2区物理与天体物理

Optics express Pub Date : 2024-09-17 DOI: 10.1364/oe.537071

Xiyue Zhang, Yuchen Wang, Weibo Wu, Tinghui An, Yiguang Jiang, Jintai Fan, Benxue Jiang, Pinghua Tang, Gianluca Galzerano, Paolo Laporta, Long Zhang

{"title":"Mid-infrared ultrafast soliton molecules from a few-cycle Cr:ZnS laser","authors":"Xiyue Zhang, Yuchen Wang, Weibo Wu, Tinghui An, Yiguang Jiang, Jintai Fan, Benxue Jiang, Pinghua Tang, Gianluca Galzerano, Paolo Laporta, Long Zhang","doi":"10.1364/oe.537071","DOIUrl":"https://doi.org/10.1364/oe.537071","url":null,"abstract":"Soliton molecules, or soliton bound states, are envisioned to make far-reaching changes in both fundamental research and applications. Here, we report on the generation and precision manipulation of soliton molecules based on a Kerr-lens mode-locked single-crystal Cr:ZnS laser at 2.4 µm. In the classical soliton regime, self-starting near-transform-limited pulses with a duration of 37 fs, less than 5 optical cycles, have been obtained at a repetition frequency of 173 MHz and an average output power of 572 mW. By fine-tuning the cavity group-delay dispersion profile, bi-soliton states with pulse durations between 55 fs and 98 fs with temporal separations between 348 fs and 604 fs have been observed and characterized. These are the shortest pulse duration and separation of soliton molecules reported so far in the mid-infrared region, to the best of our knowledge. With the ability of precision manipulation of soliton molecules generated on a sub-100-fs timescale, the tunable mid-infrared soliton molecule source paves the way for applications in the fields of telecommunications and ultrafast laser technologies.","PeriodicalId":19691,"journal":{"name":"Optics express","volume":"8 1","pages":""},"PeriodicalIF":3.8,"publicationDate":"2024-09-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142250769","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"物理与天体物理","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Low-complexity turbulence resilience enabled by a multi-mode bi-directional transceiver 多模双向收发器带来的低复杂度湍流恢复能力

IF 3.8 2区物理与天体物理

Optics express Pub Date : 2024-09-10 DOI: 10.1364/oe.532749

Ultan J. Daly, Fortune Iga, Aleksandr Boldin, Adam J. Vallance, Mitchell A. Cox, Martin P. J. Lavery

{"title":"Low-complexity turbulence resilience enabled by a multi-mode bi-directional transceiver","authors":"Ultan J. Daly, Fortune Iga, Aleksandr Boldin, Adam J. Vallance, Mitchell A. Cox, Martin P. J. Lavery","doi":"10.1364/oe.532749","DOIUrl":"https://doi.org/10.1364/oe.532749","url":null,"abstract":"Free-space optical (FSO) communication systems are acutely affected by the pointing issues and distortions that result from mechanical instability and environmental factors such as turbulence. These distortions have generally prevented single-mode bi-directional systems from being deployed without adaptive optics due to high optical losses. We investigate and compare the performance of both step and graded index multi-mode fibers for bi-directional communications over an emulated 400 m FSO channel. We propose that OM5 graded index fiber will simultaneously provide a near Gaussian optical transmission mode and a factor of greater than 5 increase in the field of view compared to single-mode fiber. We demonstrate that OM5 can support an error-free throughput of 10 Gbps for low-turbulence (D/r0 = 3) and 9.1 Gbps for high-turbulence (D/r0 = 9) using commercial bi-directional small form-factor pluggable (SFP+) transceivers with no adaptive optical components.","PeriodicalId":19691,"journal":{"name":"Optics express","volume":"29 1","pages":""},"PeriodicalIF":3.8,"publicationDate":"2024-09-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142184762","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"物理与天体物理","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Image segmentation of phase-modulated holographic data storage based on deep learning 基于深度学习的相位调制全息数据存储的图像分割

IF 3.8 2区物理与天体物理

Optics express Pub Date : 2024-09-09 DOI: 10.1364/oe.536783

Ruixian Chen, Jinyu Wang, Shaodong Zhang, Rongquan Fan, Dakui Lin, Xiong Li, Jihong Zheng, Qiang Cao, Jianying Hao, Xiao Lin, Xiaodi Tan

引用次数: 0

Modulation format identification in elastic optical networks using integrated photonic reservoir computing and untrained K-nearest neighbors algorithm 利用集成光子存储计算和未经训练的 K 近邻算法识别弹性光网络中的调制格式

IF 3.8 2区物理与天体物理

Optics express Pub Date : 2024-09-05 DOI: 10.1364/oe.533608

Quan Li, Li Pei, Bing Bai, Jianshuai Wang, Bowen Bai, Xiaoyan Zuo, Juan Sui, Fei Dong

{"title":"Modulation format identification in elastic optical networks using integrated photonic reservoir computing and untrained K-nearest neighbors algorithm","authors":"Quan Li, Li Pei, Bing Bai, Jianshuai Wang, Bowen Bai, Xiaoyan Zuo, Juan Sui, Fei Dong","doi":"10.1364/oe.533608","DOIUrl":"https://doi.org/10.1364/oe.533608","url":null,"abstract":"In the next generation of Elastic Optical Networks, various modulation formats exhibit varying degrees of sensitivity to channel impairments during transmission. To adopt appropriate channel equalization schemes at the receiver, it is essential to perform modulation format identification prior to the receiver, followed by the adjustment of receiver parameters and types based on the recognition results. A system based on a 52-node integrated photonic reservoir chip and untrained K-nearest neighbors (KNN) algorithm is proposed for the recognition of OOK, PAM4, QPSK, and BPSK modulation formats in optical channel transmission. Its performance is validated across optical signal-to-noise ratios ranging from 8 to 23 dB, taking into account the dispersion damage of 20 km single-mode fiber transmission. In all tested scenarios, the recognition accuracy consistently surpasses 96.25%, showcasing a 14.93% improvement over prior works and an 82.81% enhancement over traditional algorithmic methods under identical conditions. The study explores the impact of different waveguide delay amounts, random phases, and algorithm K values on recognition accuracy.","PeriodicalId":19691,"journal":{"name":"Optics express","volume":"72 1","pages":""},"PeriodicalIF":3.8,"publicationDate":"2024-09-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142184783","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"物理与天体物理","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Light-injection attack against practical continuous-variable measurement-device-independent quantum key distribution systems 针对独立于测量设备的实用连续可变量子密钥分发系统的光注入攻击

IF 3.8 2区物理与天体物理

Optics express Pub Date : 2024-09-03 DOI: 10.1364/oe.537325

Yiliang Wang, Yi Zheng, Chenlei Fang, Haobin Shi, Wei Pan

{"title":"Light-injection attack against practical continuous-variable measurement-device-independent quantum key distribution systems","authors":"Yiliang Wang, Yi Zheng, Chenlei Fang, Haobin Shi, Wei Pan","doi":"10.1364/oe.537325","DOIUrl":"https://doi.org/10.1364/oe.537325","url":null,"abstract":"Continuous-variable measurement-device-independent quantum key distribution (CV-MDI QKD) can defend all detection-side attacks effectively. Therefore, the source side is the final battlefield for performing quantum hacking attacks. This paper investigates the practical security of a CV-MDI QKD system under a light-injection attack. Here, we first describe two different light-injection attacks, i.e., the induced-photorefractive attack and the strong-power injection attack. Then, we consider three attack cases where Eve only attacks one of the parties or both parties of the CV-MDI QKD system. Based on the analysis of the parameter estimation, we find that the legitimate communication parties will overestimate the secret key rate of the system under the effect of a light-injection attack. This opens a security loophole for Eve to successfully obtain secret key information in a practical CV-MDI QKD system. In particular, compared to the laser-damage attack, the above attacks use a lower power of injected light and have a more serious effect on the security of the system. To eliminate the above effects, we can enhance the practical security of the system by doping the lithium niobate material with various impurities or by using protective devices, such as optical isolators, circulators, optical power limiters, and narrow-band filters. Apart from these, we can also use an intensity monitor or a photodetector to detect the light-injection attack.","PeriodicalId":19691,"journal":{"name":"Optics express","volume":"6 1","pages":""},"PeriodicalIF":3.8,"publicationDate":"2024-09-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142184763","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"物理与天体物理","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Cavity-dumped femtosecond Yb:CALYO laser based on SESAM assisted Kerr-lens mode locking 基于 SESAM 辅助克尔透镜模式锁定的腔倾销飞秒 Yb:CALYO 激光器

IF 3.8 2区物理与天体物理

Optics express Pub Date : 2024-09-03 DOI: 10.1364/oe.537391

Yang Yu, Biao Ba, Wenlong Tian, Geyang Wang, Hui Tong, Yulong Su, Zhiyi Wei, Xiaodong Xu, Jiangfeng Zhu

引用次数: 0

Design terahertz polarizers and vector polarized vortex terahertz wave generators based on the effective dielectric constant of metal gratings 根据金属光栅的有效介电常数设计太赫兹偏振器和矢量偏振涡旋太赫兹波发生器

IF 3.8 2区物理与天体物理

Optics express Pub Date : 2024-09-03 DOI: 10.1364/oe.530489

Mengqiang Cai, Zhixu Wu, Weichao Yan, Jiangtao Lei, Yong Xia, Rongxin Tang

{"title":"Design terahertz polarizers and vector polarized vortex terahertz wave generators based on the effective dielectric constant of metal gratings","authors":"Mengqiang Cai, Zhixu Wu, Weichao Yan, Jiangtao Lei, Yong Xia, Rongxin Tang","doi":"10.1364/oe.530489","DOIUrl":"https://doi.org/10.1364/oe.530489","url":null,"abstract":"Polarization and phase devices for terahertz waves have important applications in terahertz detection, imaging, communication, etc. Spatially variable metal gratings can be used for broad-spectrum, miniaturized, and low-cost terahertz polarization and phase modulation devices. Based on the effective dielectric constant and the theory of light propagation in multilayer media, we obtain the relationship between the transmittance and extinction ratio and the parameters such as the duty cycle of the metal grating, the frequency of the incident terahertz wave, the angle of incidence, the thickness of the metal grating, the refractive index of the substrate, and the thickness of the substrate. We propose a method of designing a spatially variable metal grating located on a transparent substrate. The designed spatially variable metal grating is also used to modulate the terahertz spatial polarization and phase to generate terahertz optical fields whose polarization and phase change simultaneously in space, such as azimuthally vector vortex terahertz optical fields, radially vector vortex terahertz optical fields, and so on. This will have important applications in terahertz time-domain spectroscopic detection, terahertz time-domain spectroscopic imaging, terahertz time-domain near-field microscopic imaging, terahertz communication, and so on.","PeriodicalId":19691,"journal":{"name":"Optics express","volume":"20 1","pages":""},"PeriodicalIF":3.8,"publicationDate":"2024-09-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142184774","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"物理与天体物理","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0