Optics Communications最新文献_第4页

Research on a novel packaging configuration for a wearable flexible FBG sensor 可穿戴柔性光纤光栅传感器的新型封装结构研究

IF 2.2 3区物理与天体物理

Optics Communications Pub Date : 2025-06-18 DOI: 10.1016/j.optcom.2025.132143

Xin Li, Yuze Gong, Yuhang Jia, Yiting Chen, Chunwei Wang, Sitong Lu

{"title":"Research on a novel packaging configuration for a wearable flexible FBG sensor","authors":"Xin Li, Yuze Gong, Yuhang Jia, Yiting Chen, Chunwei Wang, Sitong Lu","doi":"10.1016/j.optcom.2025.132143","DOIUrl":"10.1016/j.optcom.2025.132143","url":null,"abstract":"<div><div>To address the stretching range limitations of traditional flexible fiber Bragg grating (FBG) sensors, this paper introduces a novel wearable FBG flexible sensor that employs a cross-shape packaging and a sinusoidal configuration. Initially, three configurations were subjected to finite element analysis and strain monitoring with a displacement from 1 mm to 8 mm. The sinusoidal configuration exhibited the least strain for the same displacement and achieved the widest test range. Subsequently, the selected configuration was packaged and integrated, then, three unidirectional tensile tests were performed on a displacement table. The sensor's length extended to 7 mm, providing a larger scale compared to traditional linear FBG sensors. The results also indicated an average displacement sensitivity of 51.53 pm/mm with a maximum sensitivity error of 2.50 %, demonstrating excellent linearity and repeatability. Ultimately, utilizing the flexible FBG sensor, a wrist angle test was conducted and compared with data from an Inertial Measurement Unit (IMU). The findings revealed an angle sensitivity of 16.94 pm/°, a maximum sensitivity error of 2.42 % and a maximum zero drift rate of 0.41 %, demonstrating high accuracy and recovery. This lays the groundwork for future advancements in wearable applications. The novel packaging configuration of FBG sensor proposed in this paper improves test range of the traditional linear configuration, and has high test sensitivity.</div></div>","PeriodicalId":19586,"journal":{"name":"Optics Communications","volume":"591 ","pages":"Article 132143"},"PeriodicalIF":2.2,"publicationDate":"2025-06-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144330850","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 polarization-insensitive and dynamic-tunable perfect absorber for a compatible infrared-visible multi-band stealth 一个偏振不敏感和动态可调的完美吸收兼容红外可见多波段隐身

IF 2.2 3区物理与天体物理

Optics Communications Pub Date : 2025-06-18 DOI: 10.1016/j.optcom.2025.132142

Feiying Wang , Furong Liu , Zulfiqar Ali , Tao Li , Guofeng Xu , Hafiz Ghullam Rasool

{"title":"A polarization-insensitive and dynamic-tunable perfect absorber for a compatible infrared-visible multi-band stealth","authors":"Feiying Wang , Furong Liu , Zulfiqar Ali , Tao Li , Guofeng Xu , Hafiz Ghullam Rasool","doi":"10.1016/j.optcom.2025.132142","DOIUrl":"10.1016/j.optcom.2025.132142","url":null,"abstract":"<div><div>With the rapid development of infrared detection technology, infrared stealth technology has evolved to focus not only on low infrared emissivity but also on achieving target stealth from multiple perspectives, including tunable optical performance, effective thermal management, and multispectral compatible stealth. This study developed a multilayer thin-film structure (ZnS/Ge/Ge<sub>2</sub>Sb<sub>2</sub>Te<sub>5</sub> (GST)/Ag) that can simultaneously achieve both visible camouflage and infrared stealth, with an operating wavelength band spanning the entire visible region and the infrared detection window. A wide range of color shifts is achieved in the visible band, and a green-yellow-orange-violet-blue-green color cycle is obtained. The structure can achieve dynamic switching between stealth and non-stealth modes by adjusting the phase state of the functional layer GST. The average emissivity of the structure in the whole infrared band in the stealthy state is only 2.1 %. A perfect absorption rate of 99.4 % can be achieved in the non-stealthy state, realizing the heat dissipation of the structure. In addition, since the structure has a high degree of symmetry, it is insensitive to polarization and can maintain stable stealth switching at large incidence angles up to 60°. The top layer structure and multiple adapted substrates can also be changed according to the application's needs. This work has great potential in multi-band compatible switching to advanced adaptive cloaking technology, with promising applications in advanced military camouflage, infrared optics, and intelligent thermal management systems.</div></div>","PeriodicalId":19586,"journal":{"name":"Optics Communications","volume":"591 ","pages":"Article 132142"},"PeriodicalIF":2.2,"publicationDate":"2025-06-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144330846","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

Hybrid FSO/RF satellite-air-ground integration network for reliable ITS communication in desert environments 沙漠环境下可靠ITS通信的混合FSO/RF星-空-地一体化网络

IF 2.2 3区物理与天体物理

Optics Communications Pub Date : 2025-06-18 DOI: 10.1016/j.optcom.2025.132071

Maadoud Djihane , Hamza Abdelkrim , Becherif Mohamed

{"title":"Hybrid FSO/RF satellite-air-ground integration network for reliable ITS communication in desert environments","authors":"Maadoud Djihane , Hamza Abdelkrim , Becherif Mohamed","doi":"10.1016/j.optcom.2025.132071","DOIUrl":"10.1016/j.optcom.2025.132071","url":null,"abstract":"<div><div>This paper presents a comprehensive study on hybrid Free Space Optical (FSO) and Radio Frequency (RF) communication systems within Space–Air–Ground Integrated Networks (SAGIN) to support Intelligent Transportation Systems (ITS). The proposed system leverages dual-hop communication between a satellite, High Altitude Platform Station (HAPS), and ground station, utilizing both FSO and RF links to ensure high data transmission rates under diverse environmental conditions. This study analyzes the effects of sandstorm attenuation, atmospheric turbulence, and path loss in desert environments during summer and winter. The performance of the hybrid FSO/RF system is evaluated through key metrics, including outage probability (OP) and received signal strength, under various scenarios that account for fading and shadowing. The results offer valuable insights into the system’s robustness, adaptability, and the critical role of HAPS in enhancing communication reliability. This work highlights the potential of HAPS in supporting 5G and future 6G networks, particularly for ITS applications in harsh and unpredictable environments.</div></div>","PeriodicalId":19586,"journal":{"name":"Optics Communications","volume":"591 ","pages":"Article 132071"},"PeriodicalIF":2.2,"publicationDate":"2025-06-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144330902","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

Combined non-negative matrix factorization and Otsu method for advanced analysis of Raman hyperspectral images acquired at nano- and microscale 结合非负矩阵分解和Otsu方法对纳微尺度拉曼高光谱图像进行高级分析

IF 2.2 3区物理与天体物理

Optics Communications Pub Date : 2025-06-18 DOI: 10.1016/j.optcom.2025.132139

Michał Czaja , Katarzyna Skirlińska-Nosek , Anna Chachaj-Brekiesz , Anita Wnętrzak , Ewelina Lipiec

{"title":"Combined non-negative matrix factorization and Otsu method for advanced analysis of Raman hyperspectral images acquired at nano- and microscale","authors":"Michał Czaja , Katarzyna Skirlińska-Nosek , Anna Chachaj-Brekiesz , Anita Wnętrzak , Ewelina Lipiec","doi":"10.1016/j.optcom.2025.132139","DOIUrl":"10.1016/j.optcom.2025.132139","url":null,"abstract":"<div><div>Micro- and nanospectroscopic hyperspectral imaging approaches provide comprehensive information about the studied material. While the obtained experimental data are characterized by high dimensionality it may lead to many difficulties in the interpretation of the results. A common approach overcoming this problem is the application of multivariate data analysis, which enables data dimensionality reduction and extraction of crucial information. In this paper, we present our proprietary algorithm to investigate hyperspectral maps of biological samples at various levels of organization. The proposed approach is based on a combination of non-negative matrix factorization and the Otsu method of image binarization. We demonstrated its application in the investigation of a TER hyperspectral map of a DPPE monolayer, which enables the automatic differentiation of spectra corresponding to nanoscopic domains in the lipid film. Moreover, to examine the proposed computational algorithm in the analysis of more complex types of samples, we applied it to a confocal Raman hyperspectral map of a single HeLa cell. The NMF-Otsu analysis automatically distinguished the spectra of lipid droplets and the cellular membrane.</div></div>","PeriodicalId":19586,"journal":{"name":"Optics Communications","volume":"591 ","pages":"Article 132139"},"PeriodicalIF":2.2,"publicationDate":"2025-06-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144313151","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

Optical bistability of photonic spin Hall effect in SPR-enhanced plasmonic structures spr增强等离子体结构中光子自旋霍尔效应的光学双稳定性

IF 2.2 3区物理与天体物理

Optics Communications Pub Date : 2025-06-17 DOI: 10.1016/j.optcom.2025.132056

Kunbiao Huang , Zhimin Zeng , Haibin Xu , Jiawei Shu , Dongmei Deng , Guanghui Wang , Li Zhang

{"title":"Optical bistability of photonic spin Hall effect in SPR-enhanced plasmonic structures","authors":"Kunbiao Huang , Zhimin Zeng , Haibin Xu , Jiawei Shu , Dongmei Deng , Guanghui Wang , Li Zhang","doi":"10.1016/j.optcom.2025.132056","DOIUrl":"10.1016/j.optcom.2025.132056","url":null,"abstract":"<div><div>We propose a multilayer structure composed of a Ge<sub>20</sub>Ga<sub>5</sub>Sb<sub>10</sub>S<sub>65</sub> (2S2G) chalcogenide prism, a gold layer, and a nonlinear material layer. Surface plasmon resonance (SPR) at the Au-nonlinear interface is excited by p-polarized light through the prism, inducing local field enhancement and nonlinear effects. Numerical simulations are performed to analyze the reflection and transmission coefficients, as well as the transverse shift, revealing a bistable response (i.e., the system exhibits two distinct output states under the same input condition) in the system. The effects of incidence angle and metal layer thickness on bistability are systematically investigated. Results indicate that the incidence angle significantly affects the bistable threshold, whereas the metal layer thickness has minimal impact on the threshold but influences the displacement amplitude. The proposed structure provides a tunable bistable system with potential applications in all-optical switching, high-sensitivity biosensing, and photonic integrated circuits.</div></div>","PeriodicalId":19586,"journal":{"name":"Optics Communications","volume":"591 ","pages":"Article 132056"},"PeriodicalIF":2.2,"publicationDate":"2025-06-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144313150","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

Phase singularity points in tight focus of linearly polarized optical vortices near the region of reverse energy flow 在反向能量流区域附近的线偏振光涡旋紧聚焦处存在相位奇异点

IF 2.2 3区物理与天体物理

Optics Communications Pub Date : 2025-06-16 DOI: 10.1016/j.optcom.2025.132111

S.S. Stafeev , V.V. Kotlyar

引用次数: 0

Surface gap solitons in linear coupling combined with cubic and saturable nonlinearity 结合三次非线性和饱和非线性的线性耦合中的表面间隙孤子

IF 2.2 3区物理与天体物理

Optics Communications Pub Date : 2025-06-16 DOI: 10.1016/j.optcom.2025.132048

Huilian Wei, Xuefei Zhang, Xiaoyang Wang, Tianfu Xu

引用次数: 0

Quantitative wavefront sensing with static Foucault and pyramid tests 定量波前传感与静态福柯和金字塔测试

IF 2.2 3区物理与天体物理

Optics Communications Pub Date : 2025-06-16 DOI: 10.1016/j.optcom.2025.132094

François Hénault , Yan Feng , Alain Spang , Laura Schreiber

{"title":"Quantitative wavefront sensing with static Foucault and pyramid tests","authors":"François Hénault , Yan Feng , Alain Spang , Laura Schreiber","doi":"10.1016/j.optcom.2025.132094","DOIUrl":"10.1016/j.optcom.2025.132094","url":null,"abstract":"<div><div>Wavefront sensors (WFS) are now core components in the fields of metrology of optical systems, biomedical optics and adaptive optics systems for astronomy. Nowadays, the most popular WFS is the Shack-Hartmann, which is fully static but suffers from a limited spatial resolution in the pupil plane of the tested optical system. Higher spatial resolutions are achievable with other types of sensors, e.g. the pyramid WFS that requires temporal modulation of the recorded signals and implies high mechanical and electronic complexity. This paper examines the possibility of performing quantitative wavefront sensing inspired from the well-known Foucault test and only comprising static, non-modulated optical components. Here, two candidate designs of static WFS are proposed, based on a set of reflective prisms. Those prisms may be coated with gradient density filters. A simplified mathematical model allows for the definition of the wavefront slopes reconstruction formula and for the calculation of the wavefront itself. Numerical simulations demonstrate that the wavefront measurement accuracy is compliant with classical diffraction limit criteria when using coated prisms. Thus accurate WFE measurements are feasible in that case.</div></div>","PeriodicalId":19586,"journal":{"name":"Optics Communications","volume":"591 ","pages":"Article 132094"},"PeriodicalIF":2.2,"publicationDate":"2025-06-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144322688","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

Generation of dissipative soliton resonance with reverse saturable absorption in anomalous-dispersion fiber lasers 反常色散光纤激光器中反向饱和吸收耗散孤子共振的产生

IF 2.2 3区物理与天体物理

Optics Communications Pub Date : 2025-06-16 DOI: 10.1016/j.optcom.2025.132129

Huihui Ma , Cuihong Jin , Ting Wang , Wei Ge , Ke Dai , Yue Chen , Ding Mao , Zichuan Yuan , Yusheng Zhang , Daru Chen

{"title":"Generation of dissipative soliton resonance with reverse saturable absorption in anomalous-dispersion fiber lasers","authors":"Huihui Ma , Cuihong Jin , Ting Wang , Wei Ge , Ke Dai , Yue Chen , Ding Mao , Zichuan Yuan , Yusheng Zhang , Daru Chen","doi":"10.1016/j.optcom.2025.132129","DOIUrl":"10.1016/j.optcom.2025.132129","url":null,"abstract":"<div><div>In this work, we experimentally investigate the generation of dissipative soliton resonance (DSR) pulses in the anomalous dispersion regime, enabled by the reverse saturable absorption (RSA) effect. The RSA effect is achieved by tailoring the saturable absorption characteristics of a single-walled carbon nanotube-polyvinyl alcohol composite film. Our findings indicate that a strong RSA effect can suppress spectral broadening and prevent pulse breakup in a high-gain cavity, facilitating the formation of DSR pulses. At a central wavelength of 1560.3 nm, we obtain rectangular pulses with durations ranging from 0.74 ns to 3.4 ns, achieving a single-pulse energy of 0.139 nJ. Additionally, our results show that the peak power of DSR pulses increases with the saturation power, consistent with observations in the normal dispersion regime. This study highlights the crucial role of the RSA effect in carbon nanotube films for generating DSR pulses, offering valuable insights for the development of high-performance carbon-based fiber lasers.</div></div>","PeriodicalId":19586,"journal":{"name":"Optics Communications","volume":"591 ","pages":"Article 132129"},"PeriodicalIF":2.2,"publicationDate":"2025-06-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144306737","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

Finite-size secret key rate analysis of a discrete-modulated continuous-variable quantum key distribution protocol for satellite-to-ground fading channel 星地衰落信道中离散调制连续变量量子密钥分配协议的有限尺寸密钥速率分析

IF 2.2 3区物理与天体物理

Optics Communications Pub Date : 2025-06-15 DOI: 10.1016/j.optcom.2025.132044

Chetan Waghmare, Ashwin Kothari

{"title":"Finite-size secret key rate analysis of a discrete-modulated continuous-variable quantum key distribution protocol for satellite-to-ground fading channel","authors":"Chetan Waghmare, Ashwin Kothari","doi":"10.1016/j.optcom.2025.132044","DOIUrl":"10.1016/j.optcom.2025.132044","url":null,"abstract":"<div><div>Quantum key distribution via satellite-to-ground communication (SatQKD) holds great promise to enable long-distance quantum secure communication. However, SatQKD systems face significant challenges due to satellite orbital movement, atmospheric losses, fading channel and excess noise. Given these challenges, in this work, we investigate the feasibility of the discrete-modulated continuous-variable QKD (DM-CVQKD) protocol using weak coherent pulses and homodyne detection against collective Gaussian attacks for the low Earth orbit SatQKD applications. We evaluate the atmospheric loss model with respect to the satellite overpass geometry and channel fading effects to determine realistic channel parameters such as transmissivity and excess noise. With these channel parameters, we present the asymptotic secret key rate (ASKR) and finite-size secret key rate (FSKR) analysis and identify operational boundaries across different turbulence regimes in terms of satellite elevation angle, the channel transmissivity and excess noise due to various losses along with the suitable time of execution of the protocol. In particular, at weak turbulence with Rytov variance <span><math><mrow><msubsup><mrow><mi>σ</mi></mrow><mrow><mi>R</mi></mrow><mrow><mn>2</mn></mrow></msubsup><mo>=</mo><mn>0</mn><mo>.</mo><mn>1</mn></mrow></math></span>, we identify the maximum permissible loss as 9.17 dB and the suitable time of execution of the protocol as 461s per satellite pass. Additionally, we compare the FSKR of the DM-CVQKD protocol with the ASKR of the Gaussian-CVQKD protocol and demonstrate the superior performance of the DM-CVQKD protocol at all turbulence strengths. The results underscore the potential of DM-CVQKD protocol as a robust and practical solution for secure satellite-based quantum key distribution.</div></div>","PeriodicalId":19586,"journal":{"name":"Optics Communications","volume":"591 ","pages":"Article 132044"},"PeriodicalIF":2.2,"publicationDate":"2025-06-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144288962","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