Optics Communications最新文献

{"title":"Surface plasmon resonance excited using Kretschmann configuration with high refractive-index-prism","authors":"Daehyun Kim ,&nbsp;Hayato Otsu ,&nbsp;Masato Tsujiguchi ,&nbsp;Naoki Fujita ,&nbsp;Maria Vanessa Balois-Oguchi ,&nbsp;Kotaro Kajikawa","doi":"10.1016/j.optcom.2026.132927","DOIUrl":"10.1016/j.optcom.2026.132927","url":null,"abstract":"<div><div>Novel designs of a Kretschmann-type surface plasmon resonance (SPR) platform are presented, in which surface plasmons are excited by light incident parallel or perpendicular to the prism-metal interface, using a prism with a high refractive index of approximately 2.0. These designs enable us to miniaturize the optical setup, as the SPR condition can be achieved without the need for a rotation mechanism. The refractive index of water–ethanol mixtures with various mixture ratios was measured, and the formation process of a self-assembled monolayer was observed to demonstrate the adequacy of our design.</div></div>","PeriodicalId":19586,"journal":{"name":"Optics Communications","volume":"607 ","pages":"Article 132927"},"PeriodicalIF":2.5,"publicationDate":"2026-06-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"146025929","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}

{"title":"Realizing mid-infrared refractive index and temperature sensing of an all-dielectric metasurface based on Q-BIC","authors":"Xingyu Feng,&nbsp;Xinyan Wang,&nbsp;Yaowei Dai,&nbsp;Peng Gao,&nbsp;Cong Chen,&nbsp;Ying Zhang,&nbsp;Junfeng Fang,&nbsp;Hongfei Ma,&nbsp;Qiyao Wang,&nbsp;Hai Liu","doi":"10.1016/j.optcom.2026.132944","DOIUrl":"10.1016/j.optcom.2026.132944","url":null,"abstract":"<div><div>The absorption or resonance wavelengths of certain gas molecules and biological macromolecules lie within the mid-infrared band, leading many researchers to focus on sensor design for this spectral region. However, current mid-infrared metasurface sensors typically possess only a single refractive index (RI) sensing parameter, with limited research dedicated to dual-parameter sensing of both RI and temperature. Furthermore, Quasi-Bound States in the Continuum (Q-BIC) can enhance light-matter interactions, thereby improving metasurface sensing performance. Therefore, this study proposes a high-performance, all-dielectric metasurface-based dual-parameter sensor operating in the mid-infrared band, leveraging Q-BIC. A simple perforation design breaks the structural symmetry, forming a magnetic dipole-dominated Q-BIC, which correlates the environmental RI with the material intrinsic RI, enabling exceptional dual-parameter sensing in the mid-infrared. For RI sensing, the maximum sensitivity achieved is 510.12 nm/RIU, the highest Figure of Merit (FoM) reaches 739.37 RIU⁻¹, and the maximum Quality factor (Q-factor) is 11189.17. For temperature sensing, the maximum sensitivity is 0.30376 nm/°C, the highest FoM reaches 0.2217 °C^-1, and the maximum Q-factor is 2496.54, both demonstrating excellent linear responses. Additionally, this structure can function as a polarization-dependent optical switch, with a transmission difference reaching 0.99448. This metasurface sensor holds significant application potential in fields such as security monitoring and biomedical detection.</div></div>","PeriodicalId":19586,"journal":{"name":"Optics Communications","volume":"607 ","pages":"Article 132944"},"PeriodicalIF":2.5,"publicationDate":"2026-06-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"146080071","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}

{"title":"Vibration signal denoising method for pipeline leakage based on WFBG and deep learning","authors":"Cui Zhang ,&nbsp;Xinjun Gao ,&nbsp;Ajiaikebaier Wulamu ,&nbsp;Weibing Gan ,&nbsp;Ai Zhou ,&nbsp;Congcong Qin ,&nbsp;Pei Lv","doi":"10.1016/j.optcom.2026.132958","DOIUrl":"10.1016/j.optcom.2026.132958","url":null,"abstract":"<div><div>Natural gas pipelines are critical infrastructure for urban energy supply, but leak-induced vibration signals are often obscured by environmental noise and coupling from supporting structures, which reduces the accuracy of detection and localization. This paper proposes a denoising framework that integrates a weak fiber Bragg grating (WFBG) array with deep learning. Specifically, the method builds a VMD-fused multi-branch structure, in which U-Net and gated recurrent unit (GRU) subnetworks are used for feature extraction and are trained under the Noise2Noise (N2N) framework, thereby enabling denoising without clean reference signals. It effectively achieves extraction and reconstruction of both high- and low-frequency features. Experiments are conducted on a steel pipeline leakage monitoring platform with synchronous multi-zone acquisition (Zone 1 to Zone 9). Training pairs are constructed using data from different time instants within the same zone, and cross-zone consistency is validated under different noise and coupling conditions. For physical interpretability, this paper provides an order-of-magnitude prediction of the first bending mode of a supported span to explain the dominant low-frequency peak and its spatial variation. Under representative operating conditions, the proposed method achieves <span><math><mrow><mi>SNR</mi><mo>=</mo><mn>20</mn><mo>.</mo><mn>32</mn><mspace></mspace><mi>dB</mi></mrow></math></span>, <span><math><mrow><mi>PSNR</mi><mo>=</mo><mn>31</mn><mo>.</mo><mn>71</mn><mspace></mspace><mi>dB</mi></mrow></math></span>, <span><math><mrow><mi>SSIM</mi><mo>=</mo><mn>0</mn><mo>.</mo><mn>929</mn></mrow></math></span>, time-domain <span><math><mrow><mi>MSE</mi><mo>=</mo><mn>0</mn><mo>.</mo><mn>00581</mn></mrow></math></span>, and frequency-domain error <span><math><mrow><msub><mrow><mi>Err</mi></mrow><mrow><mi>f</mi></mrow></msub><mo>=</mo><mn>1</mn><mo>.</mo><mn>99985</mn></mrow></math></span>, outperforming baseline methods. Overall, the framework preserves key frequency-band characteristics related to leakage while suppressing noise, and demonstrates robust cross-zone generalization for distributed monitoring.</div></div>","PeriodicalId":19586,"journal":{"name":"Optics Communications","volume":"607 ","pages":"Article 132958"},"PeriodicalIF":2.5,"publicationDate":"2026-06-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"146080152","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}

{"title":"A networking protocol for UV communication networks based on adaptive message compression","authors":"Leitao Wang,&nbsp;Zhiyong Xu,&nbsp;Jianhua Li,&nbsp;Jingyuan Wang,&nbsp;Cheng Li,&nbsp;Jiyong Zhao,&nbsp;Yang Su","doi":"10.1016/j.optcom.2026.132939","DOIUrl":"10.1016/j.optcom.2026.132939","url":null,"abstract":"<div><div>Existing networking protocols for ultraviolet communication networks suffer from insufficient reliability, along with shortcomings in ensuring message transmission continuity and controlling failure rates. This paper proposes the enhanced ultraviolet large-scale communication networking (eUVLSCN) protocol. Firstly, a message-based simulation model is established, and network performance evaluation criteria centered on message transmission rate and message transmission success rate are put forward. Secondly, the frame structure is optimized, and message fields are added to ensure continuous message transmission. Meanwhile, an adaptive message compression algorithm is designed to dynamically adjust the compression ratio based on the message size and the transmission distance between source and destination nodes. Simulation results show that compared with the existing networking protocols for large-scale mobile ultraviolet communication networks, the eUVLSCN protocol achieves a higher message transmission success rate, enhances reliability and flexibility, and provides new insights for network performance optimization.</div></div>","PeriodicalId":19586,"journal":{"name":"Optics Communications","volume":"607 ","pages":"Article 132939"},"PeriodicalIF":2.5,"publicationDate":"2026-06-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"146080062","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}

{"title":"Enhancing optical performance of Micro-LEDs in near-eye displays via microlens-assisted light management","authors":"Chun-Yu Li ,&nbsp;Yi-Yun Sie ,&nbsp;Yu-Cheng Lin ,&nbsp;Chen-En Tsai ,&nbsp;Yu-Xiang Sun ,&nbsp;Kuan-An Chen ,&nbsp;Kuroda Hideki ,&nbsp;Hung-Chen Kuo ,&nbsp;Chih-Jung Chen","doi":"10.1016/j.optcom.2026.132886","DOIUrl":"10.1016/j.optcom.2026.132886","url":null,"abstract":"<div><div>We propose a microlens array (MLA) structure to enhance the optical performance of quantum-dot color-conversion (QDCC) micro-LEDs for near-eye displays. The design integrates high-refractive-index microlenses with a low-refractive-index filler to reduce light divergence and increase forward brightness. The MLA/low-index filler configuration narrows the angular spread of scattered light, while the microlens curvature further collimates the emission. Simulation results indicate that, despite using a fully absorptive black bank to suppress optical crosstalk, increasing the microlens refractive index to 2.0 can still enhance the forward brightness of red, green, and blue sub-pixels by nearly fourfold. The MLA/low-index filler structure also improves angular color stability. As the structure is compatible with standard fabrication processes, it offers a practical solution for advanced near-eye micro-LED display integration.</div></div>","PeriodicalId":19586,"journal":{"name":"Optics Communications","volume":"607 ","pages":"Article 132886"},"PeriodicalIF":2.5,"publicationDate":"2026-06-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"146080070","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}

{"title":"Perfect excitation of graphene surface polaritons in visible waveband","authors":"Lixun Sun ,&nbsp;Yanxiong Yang ,&nbsp;Yuyang Xiao ,&nbsp;Yuquan Zhang ,&nbsp;Xiaocong Yuan ,&nbsp;Ting Mei","doi":"10.1016/j.optcom.2026.132924","DOIUrl":"10.1016/j.optcom.2026.132924","url":null,"abstract":"<div><div>Extending the low-loss polariton response of graphene into the visible waveband is of significant interest for advancing applications in nanophotonics and optoelectronics. However, the challenge arises from the relatively low conductivity of graphene in this regime when coupled with common material properties. We reveal that a promising solution involves understanding and optimizing the influence of the dielectric environment on polariton excitation. In this work, both theoretical prediction and experimental evidence are presented, confirming the existence of transverse-electric surface polaritons in graphene within the visible waveband. This discovery is grounded in the optical admittance matching condition, providing a practical approach for achieving complete conversion of excitation photons into surface polaritons at designated wavelengths and incidence angles. By ensuring precise wavevector matching, the polaritons supported by structures specifically optimized for admittance matching exhibit theoretically attenuation-free propagation characteristics. This advancement holds promise for developing ultralow-loss polaritonic devices in the visible and near-infrared ranges.</div></div>","PeriodicalId":19586,"journal":{"name":"Optics Communications","volume":"607 ","pages":"Article 132924"},"PeriodicalIF":2.5,"publicationDate":"2026-06-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"146025927","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}

{"title":"Angular patterns of photoluminescence in quantum dot spherical superparticles mediated by whispering-gallery modes","authors":"Yu E. Geints","doi":"10.1016/j.optcom.2026.132940","DOIUrl":"10.1016/j.optcom.2026.132940","url":null,"abstract":"<div><div>Quantum dot superparticles are a specific class of metamaterials created through the self-assembly of nanometer semiconductor quantum dots into organized micro-scale structures, such as microspheres. Superparticles exhibit unique optical, chemical, and electronic properties. These properties are not merely the sum of the constituent quantum dots but rather bear the signature of the collective behavior of the nanoscale building blocks. In particular, assembling an ensemble of quantum dots into a super-sphere allows them to function as a single, high-quality optical resonator. This structure efficiently confines the emission from the pump-excited quantum dots via whispering gallery modes. The emissive properties of such a superparticle resonator remain an area of active investigation. Using numerical simulation, we study the angular structure of the photoluminescence from superparticles of various sizes and architectures formed from CdS quantum dots. We show that, in general, the angular distribution of the SP emission is characterized by strong asymmetry, with a maximum in the backward direction relative to the incident pump beam. In contrast, this asymmetry is virtually absent in the forward and side-scattering directions. The excitation of resonant modes in the superparticle enhances the emission intensity and reduces the degree of its backward asymmetry. Furthermore, coating the CdS quantum dot particle with a silicon dioxide layer increases the probability of exciting field resonances in such a core-shell superparticle.</div></div>","PeriodicalId":19586,"journal":{"name":"Optics Communications","volume":"607 ","pages":"Article 132940"},"PeriodicalIF":2.5,"publicationDate":"2026-06-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"146025928","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}

{"title":"Mitigating signal interruption of OAM- and fiber-based mode group multiplexing by receiving two conjugated OAM beams within an OAM mode group","authors":"Xiaohui Wang ,&nbsp;Zhiang Gao ,&nbsp;Chenglong Jiang ,&nbsp;Yan Hong ,&nbsp;Shanman Cheng ,&nbsp;Zewen Jing ,&nbsp;Wentao Cao ,&nbsp;Liang Xu ,&nbsp;Xinchen Ji ,&nbsp;Hui Zhang ,&nbsp;Jiawei Rui ,&nbsp;Yingxiong Song ,&nbsp;Fufei Pang ,&nbsp;Liyun Zhuang ,&nbsp;Song Yang ,&nbsp;Xiaofeng He ,&nbsp;Yongfeng Ju ,&nbsp;Yinshan Yu","doi":"10.1016/j.optcom.2026.132942","DOIUrl":"10.1016/j.optcom.2026.132942","url":null,"abstract":"<div><div>An orbital angular momentum (OAM) has been promisingly adopted and propagated over an optical fiber by a space-division multiplexing (SDM) for enhancing the channel capacity and propagation distance, where the system performances are inevitably disturbed by various factors. Plenty of methods have been investigated for mitigating signal interruption in the OAM-based mode group (OMG) multiplexing system, which inevitably increases the cost of device, complexities and times. For mitigating the aforementioned issues, a multiple-path receiving (MPR) method is proposed by receiving two conjugated OAM modes within an OMG for demodulating the received the multiplexed OMGs. For supporting the OAM mode propagations, a weakly-coupled OAM fiber (WCOF) is fabricated, where a lower refraction index contrast (less than 1 %) between ring-core layer and cladding is achieved for reducing the propagation loss (PL) of the supported modes. A maximal PL of 0.289 dB/km in the supported four OMGs is measured by an optical time domain reflectometry, which depicts that the proposed WOCF with a low propagation loss can be potentially used for OAG-based multiplexing through a longer propagation distance. Besides, an experiment platform is also built for showing the feasibility of the proposed method. The detected intensity and interference images depict that the transmitted three OAM modes are successfully received, respectively. Moreover, a bit error rate (BER) is also adopted to evaluate the system performances with/without MPR. The measured BER results show that an improvement of 2.30/2.39/2.98 dBm for OMG1/2/3 can be achieved when the proposed MPR is employed. Moreover, the measured BERs also demonstrate that the BERs degrade as the WCOF length/data rate increases, respectively. Besides, all measured BERs are below the threshold of hard forward error correction (HFEC) at −21 dBm from 1530 nm to 1625 nm, which implies that the proposed method can be utilized in the “C + L” waveband.</div></div>","PeriodicalId":19586,"journal":{"name":"Optics Communications","volume":"607 ","pages":"Article 132942"},"PeriodicalIF":2.5,"publicationDate":"2026-06-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"146026027","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}

{"title":"Single-pixel imaging based on pseudo non-diffracting structured light modulation","authors":"Jingjing Wu ,&nbsp;Xueyao Song","doi":"10.1016/j.optcom.2026.132951","DOIUrl":"10.1016/j.optcom.2026.132951","url":null,"abstract":"<div><div>In the single-pixel imaging (SPI) process, the illumination patterns need to be projected onto the object surface to modulate and sample the object information. If the illumination pattern is defocused, it will cause blurring in the SPI results. This paper proposes a method using spatially multiplexed phase modulation to generate pseudo non-diffracting structured light pattern, such as random binary patterns, and applies it to SPI, thereby extending the axial imaging range of SPI. Experimental results show that the generated non-diffracting structured light can maintain its pattern stable and unchanged within the designed nondiffracting distance, achieving high-quality SPI imaging even at low sampling rates. This method can obtain clear images without requiring precise focusing, enable SPI for multiple objects along the axial direction simultaneously, and can also be applied to SPI for axially moving objects.</div></div>","PeriodicalId":19586,"journal":{"name":"Optics Communications","volume":"607 ","pages":"Article 132951"},"PeriodicalIF":2.5,"publicationDate":"2026-06-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"146026028","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}

{"title":"Identification of rough surface replicas","authors":"A.M. Smolovich ,&nbsp;A.P. Orlov ,&nbsp;A.V. Frolov ,&nbsp;L.D. Klebanov ,&nbsp;I.D. Laktaev ,&nbsp;P.A. Smolovich ,&nbsp;O.V. Butov","doi":"10.1016/j.optcom.2026.132915","DOIUrl":"10.1016/j.optcom.2026.132915","url":null,"abstract":"<div><div>Novel reflection and transparent optical elements containing replicas of rough surface areas were experimentally studied as an alternative to traditional security holograms. These elements provide a physically unclonable function while allowing for mass replication from a master stamp. The sensitivity of the replica identification process to positioning inaccuracies was determined, and methods for reducing this sensitivity were proposed and experimentally tested. This allowed for an increase in permissible lateral shifts by more than an order of magnitude. For transparent elements, the permissible tilt value increased by two orders of magnitude compared to reflection elements.</div></div>","PeriodicalId":19586,"journal":{"name":"Optics Communications","volume":"606 ","pages":"Article 132915"},"PeriodicalIF":2.5,"publicationDate":"2026-06-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145981657","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}