Optics Communications最新文献_第7页

Five layer bi-directionally adjustable perfect metamaterial absorber based on silver gratings with four narrow bands and 1650 nm broadband absorptions 基于银光栅的五层双向可调完美超材料吸收器，具有四个窄带和 1650 nm 宽带吸收功能

IF 2.2 3区物理与天体物理

Optics Communications Pub Date : 2025-03-12 DOI: 10.1016/j.optcom.2025.131750

Yu Ao , Xingang Dai , Yanjun Hu , Bowen Niu , Qun Dai , Yu Qiao , Xuanwei Xu , Yuan Li , Guofang Fan

{"title":"Five layer bi-directionally adjustable perfect metamaterial absorber based on silver gratings with four narrow bands and 1650 nm broadband absorptions","authors":"Yu Ao , Xingang Dai , Yanjun Hu , Bowen Niu , Qun Dai , Yu Qiao , Xuanwei Xu , Yuan Li , Guofang Fan","doi":"10.1016/j.optcom.2025.131750","DOIUrl":"10.1016/j.optcom.2025.131750","url":null,"abstract":"<div><div>The remarkable performance of metamaterial perfect absorbers in applications such as solar cells, sensors, and photoconversion devices has underscored their progressively important role in diverse areas of scientific and technological development. However, designing perfect absorbers that achieve both narrowband and broadband absorption with relatively simple structures remains a significant challenge. This paper presents a bi-directional metamaterial perfect absorber comprising a silver grating, featuring a specialized structure engineered to simultaneously achieve narrowband and broadband perfect absorption in the same nanostructure. Four distinct absorption peaks are observed when the light source is incident from the grating portion located above the structure, exhibiting absorptivity of 91.8 %, 99.8 %, 94.3 % and 93.2 %. All of these peaks demonstrate favorable sensing performance. In contrast, broadband perfect absorption is observed across the wavelength range of 650–2300 nm when the light source is incident from the bottom planar section of the proposed absorber, exhibiting an average absorption of 95.85 %. Simulation results demonstrate that our designed absorber exhibits excellent narrowband and broadband absorption properties and is simpler and easier to fabricate than other bidirectional absorber materials, suggesting its potential for broader applications compared to traditional absorbers.</div></div>","PeriodicalId":19586,"journal":{"name":"Optics Communications","volume":"583 ","pages":"Article 131750"},"PeriodicalIF":2.2,"publicationDate":"2025-03-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143619221","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

Transmission performance analysis and optimization of C+L band SDM-WDM system with weakly coupled multi-core fiber

IF 2.2 3区物理与天体物理

Optics Communications Pub Date : 2025-03-12 DOI: 10.1016/j.optcom.2025.131755

Jiawei Meng , Yifan Yu , Lian Xiang

引用次数: 0

Double stripe square enclosed SRR based triple band metamaterial absorber for materials variation and thickness sensing applications

IF 2.2 3区物理与天体物理

Optics Communications Pub Date : 2025-03-12 DOI: 10.1016/j.optcom.2025.131740

S.M. Anowarul Haque , Mohammad Tariqul Islam , Abdullah G. Alharbi , Asad Miah , Sams Al Zafir , Md Samsuzzaman

{"title":"Double stripe square enclosed SRR based triple band metamaterial absorber for materials variation and thickness sensing applications","authors":"S.M. Anowarul Haque , Mohammad Tariqul Islam , Abdullah G. Alharbi , Asad Miah , Sams Al Zafir , Md Samsuzzaman","doi":"10.1016/j.optcom.2025.131740","DOIUrl":"10.1016/j.optcom.2025.131740","url":null,"abstract":"<div><div>In this paper, a double stripe square enclosed SRR based triple band metamaterial sensor has been proposed to detect material properties and its thickness. A unique triple negative band metamaterial is designed for applications in microwave sensing described in this paper. It has a good absorption property almost equal to one and highly quality factor. The size for this sensor is 19.9 mm × 19.9 mm × 1.6 mm thickness of FR-4 substrate is used to produce the unit cell. The absorption of this sensor are 99.9 %, 99.9 % and 98.6 % for at frequencies 1.93 GHz, 3.55 GHz and 6.35 GHz respectively. This absorber has three absorption peak make it suitable to use in the triple band (L, S, and C). The copper back layer structure enhances the reflection coefficient, while the double stripe design aids in achieving triple band frequency. The frequency domain used in this study ranges from 1 to 7 GHz. The ADS software and CST results are used to confirm the reflection coefficient (S<sub>11</sub>) of this MTM absorber equivalent circuit. The resonance frequency and quality factor vary with oil because of its varying dielectric constant. The Q factors for these triple frequencies 1.93 GHz, 3.55 GHz, and 6.35 GHz are 1943.00, 1056.25, and 590.625 respectively. This unit cell structure receives a variety of frequencies that can be modified for sensing purposes. The sensor has sensitivity values of 0.454 %, 0.061 %, and 1.55 % for these frequencies. In addition, the FOM for 1.93 GHz, 3.55 GHz, and 6.35 GHz frequencies are 64.54, 915.47, and 822.12, respectively. The information demonstrates that the sensor's sensitivity is adequate to identify a range of oils. Since the proposed sensor has high Q-factor, sensitivity, absorption and excellent performance the recommended sensor can be used for distinguishing materials and thickness in various applications.</div></div>","PeriodicalId":19586,"journal":{"name":"Optics Communications","volume":"583 ","pages":"Article 131740"},"PeriodicalIF":2.2,"publicationDate":"2025-03-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143681628","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

Modulating number of Bloch oscillations in synthetic temporal lattices 调制合成时态网格中的布洛赫振荡次数

IF 2.2 3区物理与天体物理

Optics Communications Pub Date : 2025-03-12 DOI: 10.1016/j.optcom.2025.131694

Tao Wei , Zengrun Wen

引用次数: 0

Demonstration of 633-nm InGaN-based red light-emitting diodes on a semipolar (11–22) GaN template 在半极性 (11-22) GaN 模板上演示 633 纳米 InGaN 基红色发光二极管

IF 2.2 3区物理与天体物理

Optics Communications Pub Date : 2025-03-11 DOI: 10.1016/j.optcom.2025.131749

Kun Xing , Zhengwei Pan , Haifeng Wang , Yimeng Sang , Yun Zhang , Tao Tao , Zhe Zhuang , Rong Zhang , Bin Liu

引用次数: 0

Endoscopic imaging of single multimode fiber based on deep learning

IF 2.2 3区物理与天体物理

Optics Communications Pub Date : 2025-03-11 DOI: 10.1016/j.optcom.2025.131748

Hangyu Zhang , Dafu Shen , Leihong Zhang , Kai Liu , Zhenhua Qian , Mingzhou Jiang , Donghua Jia , Yi Shi , Dawei Zhang

{"title":"Endoscopic imaging of single multimode fiber based on deep learning","authors":"Hangyu Zhang , Dafu Shen , Leihong Zhang , Kai Liu , Zhenhua Qian , Mingzhou Jiang , Donghua Jia , Yi Shi , Dawei Zhang","doi":"10.1016/j.optcom.2025.131748","DOIUrl":"10.1016/j.optcom.2025.131748","url":null,"abstract":"<div><div>The high information throughput and small core diameter of multimode fibers make them have great potential applications in endoscopy. However, the multimode fiber imaging systems usually use additional optical paths for illumination, which takes up a large space and is not suitable for actual endoscopic imaging. In this paper, a self-built multimode fiber imaging system is used, which places the illumination path and the transmission image path in the same optical path, which takes up less space and makes the imaging system more compact. In this paper, we propose a network to extract some invariant features of multimode fiber in perturbed state and reconstruct the image. The multimode fiber with a length of 0.5 m and an inner diameter of 125um is used for image transmission experiments. The experimental results show that this network can extract features better and has the best reconstruction effect compared with the other three networks (UNet, R2UNet, U2Net) in static or perturbed state. Therefore, our study shows the potential of endoscopic imaging.</div></div>","PeriodicalId":19586,"journal":{"name":"Optics Communications","volume":"583 ","pages":"Article 131748"},"PeriodicalIF":2.2,"publicationDate":"2025-03-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143682153","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

Enhanced sensing via multipolarization reconfigurable Fano resonant graphene-dielectric metasurfaces at a fixed frequency

IF 2.2 3区物理与天体物理

Optics Communications Pub Date : 2025-03-11 DOI: 10.1016/j.optcom.2025.131689

Zian Li , Rui Yang , Changhong Li

引用次数: 0

The design of an imaging spectrometer based on forearm compensation optical path multiplexing 基于前臂补偿光路复用的成像光谱仪的设计

IF 2.2 3区物理与天体物理

Optics Communications Pub Date : 2025-03-10 DOI: 10.1016/j.optcom.2025.131746

Xijie Li , Jiating Yang , Ming Gao , Jun Liu , Yunliang Zhu , Siyuan Li

{"title":"The design of an imaging spectrometer based on forearm compensation optical path multiplexing","authors":"Xijie Li , Jiating Yang , Ming Gao , Jun Liu , Yunliang Zhu , Siyuan Li","doi":"10.1016/j.optcom.2025.131746","DOIUrl":"10.1016/j.optcom.2025.131746","url":null,"abstract":"<div><div>The plane diffraction grating has very high diffraction efficiency, so it is widely used in spectrometers. However, since the principal section of the plane grating does not coincide with the section of the diffracted light, a serious spectral smile occurs, causing deviation in the collected spectral and image information, which affects the imaging spectrometer's detection accuracy for the target signal. To address this issue, a design method of an imaging spectrometer based on forearm compensation optical path multiplexing is proposed in this paper. The forearm compensation lens group generates spectral smile in the opposite direction of to the plane grating to correct the spectral smile of the spectrometer. Moreover, the correction conditions for wide spectrum aberrations are derived based on vector geometric relationships. Based on the proposed design method, we have developed a prototype with a spectral range of 0.45 μm–0.9 μm, a spectral resolution of 6 nm, spectral smile and spectral distortion both less than 2.5 μm, and a volume of approximately 65 mm × 40 mm × 40 mm. Finally, the spectral and imaging performance of the prototype is tested.The test results confirm the feasibility of correcting the spectral smile of an imaging spectrometer and the correctness of the correction conditions for the wide spectrum aberrations based on our proposed design method.</div></div>","PeriodicalId":19586,"journal":{"name":"Optics Communications","volume":"583 ","pages":"Article 131746"},"PeriodicalIF":2.2,"publicationDate":"2025-03-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143619284","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"物理与天体物理","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Robust speckle reconstruction based on cascade transfer learning and speckle correlation imaging

IF 2.2 3区物理与天体物理

Optics Communications Pub Date : 2025-03-10 DOI: 10.1016/j.optcom.2025.131743

Fu Liao , Guangmang Cui , Weize Cui , Yang Liu , Shigong Shi , Jufeng Zhao , Changlun Hou

{"title":"Robust speckle reconstruction based on cascade transfer learning and speckle correlation imaging","authors":"Fu Liao , Guangmang Cui , Weize Cui , Yang Liu , Shigong Shi , Jufeng Zhao , Changlun Hou","doi":"10.1016/j.optcom.2025.131743","DOIUrl":"10.1016/j.optcom.2025.131743","url":null,"abstract":"<div><div>Achieving high-quality reconstruction with unknown scattering media and complex scattering conditions, such as low signal-to-noise ratio (SNR) or non-darkroom environments with strong ambient light, remains a significant challenge. Traditional imaging methods have good generalization ability but the fidelity of results needs to be improved, while deep learning methods have good imaging results but limited generalization ability. In order to enhance the generalization ability of the model, improve the reconstruction quality, and achieve robust reconstruction in high-intensity ambient light noise environments, we propose a method based on cascade transfer learning and speckle correlation imaging. Specifically, an innovative and flexible cascade transfer learning architecture is proposed for accurate and robust speckle reconstruction, while the speckle correlation imaging chain is used to generate robust pre-training and fine-tuning datasets, maximizing the advantages of the pre-training and boosting the overall efficacy of transfer learning. Additionally, a degradation-aware Transformer network is designed to achieve better convergence in both pre-training and fine-tuning tasks. Experimental results show that our method outperforms traditional methods and various deep learning-based approaches in both reconstruction fidelity and generalization. Moreover, it can reliably reconstruct targets utilizing low-quality speckles in unfavorable environments, and successfully tackle the challenge of reconstructing highly complex face images through biological tissue, offering new inspiration for scattering imaging.</div></div>","PeriodicalId":19586,"journal":{"name":"Optics Communications","volume":"583 ","pages":"Article 131743"},"PeriodicalIF":2.2,"publicationDate":"2025-03-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143619288","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

Light trapping in four-coupled silicon nanowires for photovoltaic applications 用于光伏应用的四耦合硅纳米线中的光捕获

IF 2.2 3区物理与天体物理

Optics Communications Pub Date : 2025-03-10 DOI: 10.1016/j.optcom.2025.131747

Jinrong Tang , Jie Zhang , Wenfu Liu , Yasha Yi

引用次数: 0