Optics Communications最新文献_第9页

Edge-lit directional backlight based on tailored freeform optics 基于定制自由形状光学的边缘照明定向背光

IF 2.5 3区物理与天体物理

Optics Communications Pub Date : 2026-06-01 Epub Date: 2026-01-09 DOI: 10.1016/j.optcom.2026.132902

Zijun Zhang, Haotian Sun, Yuqin Chen, Rengmao Wu

引用次数: 0

Four-state electro-optic switch operating in the short-wave infrared enabled by a dual transparent window C-bar-shaped antenna/AZO metasurface 双透明窗口c形天线/AZO超表面使能工作在短波红外的四态电光开关

IF 2.5 3区物理与天体物理

Optics Communications Pub Date : 2026-06-01 Epub Date: 2026-01-09 DOI: 10.1016/j.optcom.2026.132899

Qiupeng Huang , Yanhua Xu , Zeliang Bai , Zhenbo Hu , Decheng Ni , Xiangqian Li , Guangming Li , Lili Miao

{"title":"Four-state electro-optic switch operating in the short-wave infrared enabled by a dual transparent window C-bar-shaped antenna/AZO metasurface","authors":"Qiupeng Huang , Yanhua Xu , Zeliang Bai , Zhenbo Hu , Decheng Ni , Xiangqian Li , Guangming Li , Lili Miao","doi":"10.1016/j.optcom.2026.132899","DOIUrl":"10.1016/j.optcom.2026.132899","url":null,"abstract":"<div><div>The short-wave infrared (SWIR) band has become a pivotal spectral window for optical communications, multi-wavelength routing, and integrated photonic logic circuits. Conventional electro-optic switches, however, still face significant challenges in channel count, modulation depth, and insertion loss. To achieve multi-state, broadband, low-loss asynchronous control, we propose a C-shaped split-ring antenna that generates a plasmon-induced-transparency (PIT)-like transparent window through plasmonic coupling between the antenna and the aluminum-doped zinc oxide (AZO) film, and integrate it into a dual-window C-bar-shaped antenna/AZO metasurface. The first window extends approximately 175 nm across the Near-Infrared I and II regions, while the second provides PIT-like transparency over 535 nm, covering the O- and C-telecommunication bands. Consequently, we demonstrate a four-state electro-optic switch realized on this C-bar-shaped antenna/AZO metasurface, in which the modulation of the AZO electron density enables operation from 920 to 1235 nm with a peak modulation depth of 97.08 %, an extinction ratio up to 15.35 dB, and an insertion loss as low as 0.83 dB. These findings offer quantitative design guidelines for next-generation photonic devices.</div></div>","PeriodicalId":19586,"journal":{"name":"Optics Communications","volume":"606 ","pages":"Article 132899"},"PeriodicalIF":2.5,"publicationDate":"2026-06-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145981664","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

Tunable dual-band infrared optical switch via surface plasmon resonance based on Ag nanodisks 基于银纳米片表面等离子体共振的可调谐双频红外光开关

IF 2.5 3区物理与天体物理

Optics Communications Pub Date : 2026-06-01 Epub Date: 2026-01-09 DOI: 10.1016/j.optcom.2026.132898

Yiwen Yang, Qi Wang, Chen Wang, Mochi Guo, Tianrong Ouyang, Ruijin Hong, Dawei Zhang

{"title":"Tunable dual-band infrared optical switch via surface plasmon resonance based on Ag nanodisks","authors":"Yiwen Yang, Qi Wang, Chen Wang, Mochi Guo, Tianrong Ouyang, Ruijin Hong, Dawei Zhang","doi":"10.1016/j.optcom.2026.132898","DOIUrl":"10.1016/j.optcom.2026.132898","url":null,"abstract":"<div><div>A dual-band tunable infrared optical switch based on a plasmonic structure composed of metal nanodisks and vanadium dioxide film is proposed. Dynamic optical switch modulation of both operating wavelength and spectral reflectance intensity is achieved by leveraging the insulator-metal transition of vanadium dioxide. Finite-difference time-domain simulations demonstrate that the device operates at two operating wavelengths of 2389 nm and 2974 nm, achieving modulation depths of 65.8 % and 73.5 %, with extinction ratios up to 14.42 dB. Furthermore, by adjusting the nano-disk radii and their relative positions, the operating wavelength can be tuned over a range exceeding 1100 nm while maintaining polarization-independent and angle-insensitive characteristics. Benefiting from the ultrafast phase transition of VO<sub>2</sub>, the proposed design provides low-power and high-speed switching, offering great potential for applications in dynamic and multifunctional devices such as optical modulations, tunable multiband filters, infrared photnics.</div></div>","PeriodicalId":19586,"journal":{"name":"Optics Communications","volume":"606 ","pages":"Article 132898"},"PeriodicalIF":2.5,"publicationDate":"2026-06-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145981665","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

Deep learning-aided dual-mode index modulation FBMC for optical wireless communications 用于无线光通信的深度学习辅助双模索引调制FBMC

IF 2.5 3区物理与天体物理

Optics Communications Pub Date : 2026-06-01 Epub Date: 2026-01-12 DOI: 10.1016/j.optcom.2026.132906

Xuan Chen, Minghua Cao, Yue Zhang, Huiqin Wang

{"title":"Deep learning-aided dual-mode index modulation FBMC for optical wireless communications","authors":"Xuan Chen, Minghua Cao, Yue Zhang, Huiqin Wang","doi":"10.1016/j.optcom.2026.132906","DOIUrl":"10.1016/j.optcom.2026.132906","url":null,"abstract":"<div><div>Optical filter-bank multicarrier with index modulation (OFBMC-IM) suffers from reduced spectral efficiency due to inactive subcarriers. To address this issue, we propose a dual-mode scheme for OFBMC-IM system (DM-OFBMC-IM), which assigns distinct constellation modes to all subcarriers, thereby achieving full carrier utilization while preserving the diversity gain of index modulation. To further enhance bit error rate (BER) performance, phase rotation and amplitude scaling are introduced to adjust both the angular and radial positions of constellation points, generating IM-preferable constellations. Additionally, a deep learning-aided detector, named DMOFIMNet, is developed to recover index and symbol information under channel turbulence, and its hyperparameters are optimized using the Artificial Lemming Algorithm (ALA), thereby maximizing the achievable performance. Simulation and experimental results demonstrate that the proposed DM-OFBMC-IM system not only achieves higher spectral efficiency than benchmark systems but also improves BER performance. In addition, compared to the classical maximum-likelihood detector, the proposed detector reduces computational complexity by approximately 25% while achieving near-optimal BER performance.</div></div>","PeriodicalId":19586,"journal":{"name":"Optics Communications","volume":"606 ","pages":"Article 132906"},"PeriodicalIF":2.5,"publicationDate":"2026-06-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145981666","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

Robust quantum optical encryption framework using chaotic umbrella maps and fractional transforms with holographic techniques 基于混沌伞形映射和分数阶全息变换的鲁棒量子光学加密框架

IF 2.5 3区物理与天体物理

Optics Communications Pub Date : 2026-06-01 Epub Date: 2026-01-12 DOI: 10.1016/j.optcom.2026.132909

Pankaj Rakheja

{"title":"Robust quantum optical encryption framework using chaotic umbrella maps and fractional transforms with holographic techniques","authors":"Pankaj Rakheja","doi":"10.1016/j.optcom.2026.132909","DOIUrl":"10.1016/j.optcom.2026.132909","url":null,"abstract":"<div><div>The proposed quantum-based image encryption framework introduces an asymmetric mechanism for standard grayscale and iris biometric images by integrating quantum theory, unequal modulus decomposition, umbrella mapping, LU decomposition, fractional Fourier and Fresnel transforms. Biometric uniqueness is explicitly embedded within cryptographic operations; the scheme achieves high robustness and security while ensuring confidentiality and authentication. The numerical simulations demonstrate the superior performance of the proposed scheme, achieving average execution time of <span><math><mrow><mn>0.1132</mn></mrow></math></span> seconds, entropy of <span><math><mrow><mn>7.9955</mn></mrow></math></span> bits, and strong statistical metrics, including <span><math><mrow><mi>N</mi><mi>P</mi><mi>C</mi><mi>R</mi><mo>=</mo><mn>99.6063</mn><mo>,</mo><mi>U</mi><mi>A</mi><mi>C</mi><mi>I</mi><mo>=</mo><mn>33.3283</mn><mo>,</mo><mi>C</mi><mi>C</mi><mo>=</mo><mn>1</mn><mtext>,</mtext></mrow></math></span> and <span><math><mrow><mi>M</mi><mi>S</mi><mi>E</mi><mo>=</mo><mn>0</mn><mtext>,</mtext></mrow></math></span> confirming robust encryption and perfect image reconstruction fidelity. The system shows strong resistance to noise, brute force, special, differential, and traditional cryptographic attacks, supported by an extended key space. Despite generating a complex cipher and being vulnerable to occlusion attack, the designed scheme ensures reliability, scalability, and security. This makes the scheme suitable for real-life applications in multiple domains like healthcare, defense, and multimedia communication, with potential enhancements through hardware implementations.</div></div>","PeriodicalId":19586,"journal":{"name":"Optics Communications","volume":"606 ","pages":"Article 132909"},"PeriodicalIF":2.5,"publicationDate":"2026-06-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"146039186","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

Propagation dynamics and transient amplification in warm and cold atomic EIT systems 热和冷原子EIT系统中的传播动力学和瞬态放大

IF 2.5 3区物理与天体物理

Optics Communications Pub Date : 2026-06-01 Epub Date: 2026-01-13 DOI: 10.1016/j.optcom.2026.132893

Andrew MacRae , Connor Kupchak

引用次数: 0

Lightweight Transformer-based nonlinear equalization for robust IQ recovery in WDM PDM CO-OFDM systems 基于轻量级变压器的WDM PDM CO-OFDM系统鲁棒IQ恢复非线性均衡

IF 2.5 3区物理与天体物理

Optics Communications Pub Date : 2026-06-01 Epub Date: 2026-01-03 DOI: 10.1016/j.optcom.2025.132837

Xi Fang, YunZhang Wang, Shun Lv, LingYu Liu, SiLu Fan, LingXiao Liu

{"title":"Lightweight Transformer-based nonlinear equalization for robust IQ recovery in WDM PDM CO-OFDM systems","authors":"Xi Fang, YunZhang Wang, Shun Lv, LingYu Liu, SiLu Fan, LingXiao Liu","doi":"10.1016/j.optcom.2025.132837","DOIUrl":"10.1016/j.optcom.2025.132837","url":null,"abstract":"<div><div>In high-speed WDM PDM CO-OFDM systems, nonlinear distortion and frequency-domain coupling severely impact in-phase/quadrature (IQ) recovery in coherent optical receivers. We propose LTNE, a lightweight Transformer-based equalizer specifically tailored for frequency-domain IQ signal recovery. Unlike generic local-attention approaches, LTNE employs a sliding-window design motivated by the localized nature of fiber-induced nonlinear inter-subcarrier coupling. By predicting the center subcarrier within each local spectral window, LTNE captures the most relevant high-order nonlinear interactions while avoiding unnecessary global attention. This approach effectively reduces computational complexity while preserving phase continuity essential for coherent detection. Under 50 GHz spacing, 500 km reach, and 500 kHz linewidth conditions, LTNE maintains BER below 3.8 × 10<sup>−3</sup> and remains robust for 64/128-QAM formats where conventional methods fail. With 10 × faster inference and 55.6 % fewer parameters than standard Transformers, LTNE demonstrates both high-order robustness and practical feasibility for real-time optical IQ recovery.</div></div>","PeriodicalId":19586,"journal":{"name":"Optics Communications","volume":"607 ","pages":"Article 132837"},"PeriodicalIF":2.5,"publicationDate":"2026-06-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"146026025","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 video encryption using iterative phase retrieval and multimodal chaotic maps 基于迭代相位恢复和多模态混沌映射的光学视频加密

IF 2.5 3区物理与天体物理

Optics Communications Pub Date : 2026-06-01 Epub Date: 2026-01-24 DOI: 10.1016/j.optcom.2026.132960

Gaurav Verma , Wenqi He

{"title":"Optical video encryption using iterative phase retrieval and multimodal chaotic maps","authors":"Gaurav Verma , Wenqi He","doi":"10.1016/j.optcom.2026.132960","DOIUrl":"10.1016/j.optcom.2026.132960","url":null,"abstract":"<div><div>The Optical Phase Retrieval (OPR) technique represents an innovative encoding approach that enforces constraints in both the Fourier and spatial domains to generate a phase-only representation of data. Discarding amplitude information inherently achieves data compression in the Fourier domain while preserving essential structural details. This paper presents an efficient and secure video encryption framework integrating OPR with multimodal chaotic-map modulation for enhanced robustness and confidentiality. In the proposed method, video sequences are decomposed into individual frames, which are encoded into phase-only distributions using an iterative OPR algorithm. These encoded frames are further encrypted through multimodal chaotic maps, including Logistic and Henon systems, ensuring high key sensitivity, strong diffusion, and nonlinear randomness. The integrated framework achieves efficient data compression, secure transmission, and robustness against perturbations. The numerical results demonstrate that the proposed scheme achieves a large key space and strong sensitivity, and offers efficient computation time complexity, also effectively showing reliable performance against video processing attacks such as compression, rotation, and blurring. Comprehensive experiments under diverse degradations — such as Gaussian noise, salt-and-pepper noise, and partial occlusion — demonstrate that the proposed system provides high-quality reconstruction during decryption. Statistical evaluations using metrics such as MSE, PSNR, SSIM, and entropy confirm excellent decryption fidelity and strong resistance to standard cryptographic attacks. Furthermore, the proposed system exhibits real-time processing capabilities, making it a suitable choice for next-generation optical video encryption and secure multimedia communication applications.</div></div>","PeriodicalId":19586,"journal":{"name":"Optics Communications","volume":"607 ","pages":"Article 132960"},"PeriodicalIF":2.5,"publicationDate":"2026-06-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"146080063","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

Generating spatial multimode entanglement using a spatial-mode-rotated SU(1,1) interferometer: Theoretical study 利用空间模式旋转SU（1,1）干涉仪产生空间多模纠缠：理论研究

IF 2.5 3区物理与天体物理

Optics Communications Pub Date : 2026-06-01 Epub Date: 2026-01-21 DOI: 10.1016/j.optcom.2026.132925

Xiansheng Li, Jun Xin

引用次数: 0

Application of quaternions to obtain analytic solutions to systems of polarization components 四元数在极化分量系统解析解中的应用

IF 2.5 3区物理与天体物理

Optics Communications Pub Date : 2026-06-01 Epub Date: 2026-01-13 DOI: 10.1016/j.optcom.2026.132904

Michael G. Taylor

{"title":"Application of quaternions to obtain analytic solutions to systems of polarization components","authors":"Michael G. Taylor","doi":"10.1016/j.optcom.2026.132904","DOIUrl":"10.1016/j.optcom.2026.132904","url":null,"abstract":"<div><div>This paper describes the passage of light through a system of waveplates mathematically in terms of quaternions, an extension of the complex numbers, instead of the more usual Jones vectors and Jones matrices. Both the light beam and the waveplate are represented by a quaternion. It is possible to manipulate the quaternion expression more readily than the Jones matrix-vector expression; for example it can be inverted. The quaternion form of a waveplate is compactly related to its retardance and fast/slow axes, and the quaternion of a signal is closely related to its state of polarization (SOP), either expressed as a vector on the Poincaré sphere or as a polarization ellipse. The paper presents rules to decide if two optical signals are aligned or orthogonal in phase or in polarization from their quaternions, and presents the quaternion operations to change the phase or change the SOP. Several mathematical tools are identified, such as partial conjugation, to rearrange a quaternion expression, a tricky operation because multiplication does not commute. Put together, these advances let us understand how waveplates can act on a light beam to produce desired behavior. Finally, the quaternion math is put to work on two problems. A new endless optical phase shift system is designed out of waveplates. A prior solution to the problem used five waveplates, and in this paper the same task is done with only three waveplates. Also, failures of a polarization controller are studied, and found to be caused by singularities, which can occur frequently.</div></div>","PeriodicalId":19586,"journal":{"name":"Optics Communications","volume":"607 ","pages":"Article 132904"},"PeriodicalIF":2.5,"publicationDate":"2026-06-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"146080155","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