Optics Communications最新文献_第8页

Low complexity and receiver IQ skew tolerant timing recovery and equalization scheme under baud-rate sampling short-reach coherent optical interconnection 波特率采样短程相干光互联下的低复杂度和接收器 IQ 偏移容错定时恢复和均衡方案

IF 2.2 3区物理与天体物理

Optics Communications Pub Date : 2024-10-18 DOI: 10.1016/j.optcom.2024.131207

Siyu Gong , Yanfu Yang , Qian Xiang , Linsheng Fan , Qun Zhang , Tianjian Zuo

{"title":"Low complexity and receiver IQ skew tolerant timing recovery and equalization scheme under baud-rate sampling short-reach coherent optical interconnection","authors":"Siyu Gong , Yanfu Yang , Qian Xiang , Linsheng Fan , Qun Zhang , Tianjian Zuo","doi":"10.1016/j.optcom.2024.131207","DOIUrl":"10.1016/j.optcom.2024.131207","url":null,"abstract":"<div><div>Coherent detection with high spectrum and oversampled digital signal processing (DSP) has been widely used in long-haul and metro optical communication, and power consumption is one of the most challenge for its application in energy-sensitive short reach optical connections, such as hyper-scale and ultra-capacity datacenter net works. With negligible chromatic dispersion (CD) and polarization mode dispersion (PMD) in short-reach interconnects, a low complexity and robust timing recovery and equalization scheme with baud-rate sampling is proposed and demonstrated experimentally, which aims to achieve a power efficient DSP. Instead of oversampled DSP with fully-connected butterfly equalization structure, baud-rate sampling DSP with one-tap connected butterfly structure must become the most power-efficient solution for short-reach optical interconnects, because spectrum aliasing and convolutional polarization mixing caused by CD and PMD can be ignored. Compared to conventional baud-rate and oversampled DSP scheme, the experimental results further confirm the advantage of the proposed scheme in BER performance and IQ skew tolerance. Additionally, the proposed scheme with baud-rate sampling and a simplified equalization structure can also save around 75% of power consumption with a negligible performance cost, compared to oversample DSP scheme.</div></div>","PeriodicalId":19586,"journal":{"name":"Optics Communications","volume":"574 ","pages":"Article 131207"},"PeriodicalIF":2.2,"publicationDate":"2024-10-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142525960","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"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

The symmetry change of the transverse modes in ring-LD end-pumped Nd:YVO4 laser with an étalon 环形激光二极管（ring-LD）末端泵浦 Nd:YVO4 激光器横向模式的对称性变化

IF 2.2 3区物理与天体物理

Optics Communications Pub Date : 2024-10-18 DOI: 10.1016/j.optcom.2024.131205

Jing Wang , Bingxuan Li , Zhanglang Lin , Wenbin Liao , Ge Zhang

引用次数: 0

Carrier density dynamics and frequency shift in optically injected VCSELs 光注入 VCSEL 中的载流子密度动态和频移

IF 2.2 3区物理与天体物理

Optics Communications Pub Date : 2024-10-18 DOI: 10.1016/j.optcom.2024.131227

Sami S. Alharthi, Najm Al-Hosiny

引用次数: 0

Talbot-effect-based multiplication of Laguerre–Gaussian beams with non-zero radial indices: From theory to experimental realization 基于塔尔博特效应的非零径向指数拉盖尔-高斯光束乘法：从理论到实验实现

IF 2.2 3区物理与天体物理

Optics Communications Pub Date : 2024-10-18 DOI: 10.1016/j.optcom.2024.131203

Pouria Amiri , Saifollah Rasouli , Davud Hebri , Sergey A. Ponomarenko

引用次数: 0

Weak-value amplification in fast and slow light in a ring resonator 环形谐振器中快慢光的弱值放大

IF 2.2 3区物理与天体物理

Optics Communications Pub Date : 2024-10-18 DOI: 10.1016/j.optcom.2024.131209

Keigo Nakamura , Kazuki Bando , Takahiro Matsumoto , Makoto Tomita

引用次数: 0

Topological charge of a Gaussian beam with an off-axis optical vortex 带有离轴光学漩涡的高斯光束的拓扑电荷

IF 2.2 3区物理与天体物理

Optics Communications Pub Date : 2024-10-17 DOI: 10.1016/j.optcom.2024.131220

Vitaly P. Panov , Doyeon Lee , V.V. Kotlyar , A.A. Kovalev , P.A.N.S. Priyadharshana , Keumcheol Kwak , L.K. Migara , Jang-Kun Song

引用次数: 0

Reducing dislocations for room-temperature continuous-wave InGaAs/AlGaAs multiple quantum well lasers monolithically grown on Si 减少硅上单片生长的室温连续波 InGaAs/AlGaAs 多量子阱激光器的位错

IF 2.2 3区物理与天体物理

Optics Communications Pub Date : 2024-10-16 DOI: 10.1016/j.optcom.2024.131214

Hao Liu , Chen Jiang , Shuaicheng Liu , Jihong Ye , Hao Zhai , Jian Li , Jun Wang , Qi Wang , Xin Wei , Xiaomin Ren

{"title":"Reducing dislocations for room-temperature continuous-wave InGaAs/AlGaAs multiple quantum well lasers monolithically grown on Si","authors":"Hao Liu , Chen Jiang , Shuaicheng Liu , Jihong Ye , Hao Zhai , Jian Li , Jun Wang , Qi Wang , Xin Wei , Xiaomin Ren","doi":"10.1016/j.optcom.2024.131214","DOIUrl":"10.1016/j.optcom.2024.131214","url":null,"abstract":"<div><div>As dislocation-sensitive light-emitting devices, quantum well lasers monolithically grown on Si substrates operate poorly compared to their counterparts on native ones. In this work, a GaAs/Si virtual substrate with a low threading dislocation density of 8.9 × 10<sup>6</sup>/cm<sup>2</sup> was achieved by using a combined dislocation-reducing method. Meanwhile, by using two In-containing strained layer separately inserted into upper and lower AlGaAs cladding layers, the active region was virtually free of gliding dislocations. With the reduced dislocations in the active region, the fabricated Si-based broad-stripe ridged lasers exhibited continuous-wave lasing at room temperature, and a low threshold current density of 1015 A/cm<sup>2</sup>, high operation temperature of 90 °C as well as a device lifetime of over 87.25 h were achieved. These results demonstrate an experimentally feasible way to optimize a Si-based InGaAs/AlGaAs quantum well laser and further promote the research on monolithic integration.</div></div>","PeriodicalId":19586,"journal":{"name":"Optics Communications","volume":"574 ","pages":"Article 131214"},"PeriodicalIF":2.2,"publicationDate":"2024-10-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142525819","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"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

A bandwidth allocation scheme based on GRU traffic prediction in passive optical networks 无源光网络中基于 GRU 流量预测的带宽分配方案

IF 2.2 3区物理与天体物理

Optics Communications Pub Date : 2024-10-16 DOI: 10.1016/j.optcom.2024.131222

Shiwen Song , Qinghua Tian , Xiao Zhang , Xiangjun Xin , Fu Wang , Dandan Sun , Xiongyan Tang , Lei Zhu , Feng Tian , Sitong Zhou , Qi Zhang

{"title":"A bandwidth allocation scheme based on GRU traffic prediction in passive optical networks","authors":"Shiwen Song , Qinghua Tian , Xiao Zhang , Xiangjun Xin , Fu Wang , Dandan Sun , Xiongyan Tang , Lei Zhu , Feng Tian , Sitong Zhou , Qi Zhang","doi":"10.1016/j.optcom.2024.131222","DOIUrl":"10.1016/j.optcom.2024.131222","url":null,"abstract":"<div><div>With the advancement of information technology, network slicing technology has emerged as a viable solution for ensuring Quality of Service (QoS) in optical access networks. Current research is increasingly focusing on the integration of optical access networks with network slicing technologies. This paper proposes a bandwidth allocation scheme based on traffic prediction, specifically designed for resource management in optical network slicing scenarios. The scheme employs a Gated Recurrent Unit (GRU) neural network model to forecast future traffic, and combines bandwidth and latency factors to allocate bandwidth to each slice based on predicted values, thereby meeting the QoS requirements of various services. Simulation results indicate that, compared to the baseline algorithm, the proposed scheme achieved a 35.42% increase in Explaining Variance Score (EVS) and a 38.16% improvement in R2 score for factory slicing prediction. Similarly, for data center slicing prediction, the EVS score increased by 32.29% and the R2 score improved by 41.96%. In terms of performance metrics such as latency, packet loss rate, and throughput, the proposed algorithm outperforms both traditional prediction algorithms and the baseline algorithm.</div></div>","PeriodicalId":19586,"journal":{"name":"Optics Communications","volume":"574 ","pages":"Article 131222"},"PeriodicalIF":2.2,"publicationDate":"2024-10-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142525809","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"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

Infrared non-uniformity correction method based on binocular detection system without blindsight 基于无盲区双目检测系统的红外非均匀性校正方法

IF 2.2 3区物理与天体物理

Optics Communications Pub Date : 2024-10-16 DOI: 10.1016/j.optcom.2024.131219

Honghong Lu , Tong Liu , Zhenhua Li

{"title":"Infrared non-uniformity correction method based on binocular detection system without blindsight","authors":"Honghong Lu , Tong Liu , Zhenhua Li","doi":"10.1016/j.optcom.2024.131219","DOIUrl":"10.1016/j.optcom.2024.131219","url":null,"abstract":"<div><div>The output image of an infrared detector often suffers from non-uniformity due to the inhomogeneity of the device material and limitations in the manufacturing process, which can reduce the detector's capability to detect and identify targets. It is therefore necessary to adequately correct the non-uniformity to fully utilize the high temperature sensitivity of the detector. Calibration-based non-uniformity correction technology is one of the earliest and most effective methods of correcting non-uniformity. Typically, a relatively uniform shutter is used to mask the field of view for calibration correction. However, this process interrupts the observation due to the need for masking, severely limiting its use in real-world projects. In order to maintain the performance superiority of the calibration-based method and eliminate the defect of target loss caused by masking, this paper takes the occlusion calibration as the theoretical basis, which consists of dual detectors to form a binocular detection system, and uses one of the occluded calibration auxiliary detector to assist the other occlusion-free primary detector, and takes advantage of the fact that the radiation is the same when observing the same target at the same time to make the correct response based on the steepest gradient descent learning algorithm, which removes the non-uniformity while achieving detail fidelity, no ghosting and continuous output.</div></div>","PeriodicalId":19586,"journal":{"name":"Optics Communications","volume":"575 ","pages":"Article 131219"},"PeriodicalIF":2.2,"publicationDate":"2024-10-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142654657","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"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

41.6nm/44 fs Mamyshev Yb-doped fiber laser with bound-state solitons and multiple harmonics 具有束缚态孤子和多谐波的 41.6nm/44 fs Mamyshev 掺镱光纤激光器

IF 2.2 3区物理与天体物理

Optics Communications Pub Date : 2024-10-16 DOI: 10.1016/j.optcom.2024.131221

Yuqi Sun , Yuanzhu Zhou , Yuezhang Hou , Yangmei Liu , Ting Luo , Zhili Li , Baoqun Li , Tianshu Wang , Xinjian Pan

引用次数: 0