Optics Communications最新文献_第10页

Independent tuning of circular dichroism and Q-factor via Quasi-BIC resonances in bilayer plasmonic structures 双层等离子体结构中准bic共振对圆二色性和q因子的独立调谐

IF 2.5 3区物理与天体物理

Optics Communications Pub Date : 2025-09-04 DOI: 10.1016/j.optcom.2025.132422

Zhongtao Liu , Hang Zhang , Hui Li

{"title":"Independent tuning of circular dichroism and Q-factor via Quasi-BIC resonances in bilayer plasmonic structures","authors":"Zhongtao Liu , Hang Zhang , Hui Li","doi":"10.1016/j.optcom.2025.132422","DOIUrl":"10.1016/j.optcom.2025.132422","url":null,"abstract":"<div><div>Bound states in the continuum (BICs) provides an effective mechanism for realizing high-quality-factor (high Q-factor) optical resonances by suppressing radiative losses. However, there is a critical challenge in simultaneously achieving a high Q-factor and strong field enhancement for modulating circular dichroism (CD) in metallic systems. In this work, we propose a bilayer plasmonic structure composed of rectangular metallic nanoapertures and nanorods, which enables strong CD responses while preserving a Q-factor on the order of 10<sup>2</sup>. We demonstrate that the generation of CD arises from distinct localized resonant interactions between the perforated upper metallic layer and the dipolar resonances supported by the lower nanorods. Notably, both the Q-factor and CD can be simultaneously tuned by adjusting the interlayer separation, revealing a clear positive correlation between them. The CD can be effectively tuned by geometric parameters such as rotational angle, nanorod length, and width, while keeping the Q-factor nearly unchanged. By adjusting the length of the upper-layer holes, the Q-factor can be modulated without altering the CD response. This study presents a robust strategy for achieving independent control of CD and Q-factor in plasmonic metasurfaces via resonant coupling between structurally engineered layers.</div></div>","PeriodicalId":19586,"journal":{"name":"Optics Communications","volume":"596 ","pages":"Article 132422"},"PeriodicalIF":2.5,"publicationDate":"2025-09-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145019316","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

Nonlinear generation of Mathieu beams by the quasi-multivalue-encoding method 拟多值编码法产生马修波束的非线性

IF 2.5 3区物理与天体物理

Optics Communications Pub Date : 2025-09-03 DOI: 10.1016/j.optcom.2025.132418

Jiaying Wang, Zhipeng Wang, Binglin Zhang, Gaojian Wu, Chen Chen, Ronger Lu

引用次数: 0

Computational spectrum reconstruction based on all-dielectric metasurface and correlation selection 基于全介电超表面和相关选择的计算谱重建

IF 2.5 3区物理与天体物理

Optics Communications Pub Date : 2025-09-03 DOI: 10.1016/j.optcom.2025.132416

Tonghui Zhao , Jing Zhu , Wei Wu , Yuting Zhang , Jianglin Chen , Lianqing Zhu

{"title":"Computational spectrum reconstruction based on all-dielectric metasurface and correlation selection","authors":"Tonghui Zhao , Jing Zhu , Wei Wu , Yuting Zhang , Jianglin Chen , Lianqing Zhu","doi":"10.1016/j.optcom.2025.132416","DOIUrl":"10.1016/j.optcom.2025.132416","url":null,"abstract":"<div><div>A computational spectrum reconstruction method in the mid-wave infrared band based on all-dielectric metasurfaces and correlation selection is proposed in this study, aiming to address the limitations of traditional spectrometers, such as large volume and the difficulty in balancing resolution and miniaturization. By designing an all-dielectric metasurface structure composed of composite circular pillars, rectangular pillars, cross-shaped pillars, and annular nanoscale pillars, and combining a greedy algorithm to screen low-correlation transmission spectra, a filter measurement matrix with a low Pearson correlation coefficient (average absolute value of 0.2104) was constructed. Non-negative least squares (NNLS) and second-order difference regularization algorithms were used for spectral reconstruction. Experimental results show that within the wavelength range of 3–5 μm, this method achieves high-precision reconstruction of single narrowband spectra (full width at half maximum of 15 nm) and biomal spectra, with a spectral resolution of 25 nm. The root-mean-square error (RMSE) for the reconstruction of 6 sets of broadband spectra is 5.407 × 10<sup>−3</sup>. This scheme combines compactness and high-resolution characteristics, providing a new method for miniaturized mid-wave infrared spectral analysis and portable mid-wave infrared spectral detection.</div></div>","PeriodicalId":19586,"journal":{"name":"Optics Communications","volume":"596 ","pages":"Article 132416"},"PeriodicalIF":2.5,"publicationDate":"2025-09-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145007747","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

Miniaturization of high peak power 954-nm hydrogen Raman laser 峰值功率954 nm氢拉曼激光器小型化研究

IF 2.5 3区物理与天体物理

Optics Communications Pub Date : 2025-09-03 DOI: 10.1016/j.optcom.2025.132414

Zhensong Liu , Yuhui Liu , Yuxi Jia , Ming Xu , Jinglu Sun , Tao Li , Xianglong Cai , Suya Song , Qingwei Li , Jingwei Guo

引用次数: 0

Denoising method for Φ-OTDR systems based on deep non-negative matrix factorization and non-local means filtering 基于深度非负矩阵分解和非局部均值滤波的Φ-OTDR系统去噪方法

IF 2.5 3区物理与天体物理

Optics Communications Pub Date : 2025-09-03 DOI: 10.1016/j.optcom.2025.132420

Shihe Zhang , Yafeng Cheng , Changpeng Ming , Chenxu Wang , Hanyong Wang , Lei Qian , Lei Dong , Ming Luo , Wu Liu , Hanbing Li , Tianye Huang , Xiang Li

{"title":"Denoising method for Φ-OTDR systems based on deep non-negative matrix factorization and non-local means filtering","authors":"Shihe Zhang , Yafeng Cheng , Changpeng Ming , Chenxu Wang , Hanyong Wang , Lei Qian , Lei Dong , Ming Luo , Wu Liu , Hanbing Li , Tianye Huang , Xiang Li","doi":"10.1016/j.optcom.2025.132420","DOIUrl":"10.1016/j.optcom.2025.132420","url":null,"abstract":"<div><div>The phase-sensitive optical time-domain reflectometry (Φ-OTDR) system based on Rayleigh backscattering (RBS) features high spatial resolution, long sensing distance, and strong capability for continuous monitoring, offering significant application prospects in the field of distributed optical fiber sensing. In practical applications, this system is often affected by various types of noise, primarily including laser phase noise, detector thermal noise, and environmental interference, all of which seriously impact the detection and localization accuracy of weak signals. To address these issues, this study proposes a novel denoising method that combines Deep Autoencoder-like Nonnegative Matrix Factorization (DANMF) with Non-local Means (NLM) filtering. The DANMF algorithm first decomposes the RBS signal into multiple hierarchical feature representations through multilayer nonnegative transformations, providing an initial modeling of complex Rayleigh scattering signals. Then, each extracted channel feature is individually processed using NLM filtering, which further suppresses residual noise while preserving key signal details. Experimental validation on a typical Φ-OTDR device demonstrates that the proposed DANMF-NLM method significantly improves the signal-to-noise ratio (SNR) and outperforms conventional methods. Moreover, compared to traditional deep learning models, this method requires fewer labeled samples and less computational resources, making it more practical and applicable for real-world engineering scenarios with complex noise environments.</div></div>","PeriodicalId":19586,"journal":{"name":"Optics Communications","volume":"596 ","pages":"Article 132420"},"PeriodicalIF":2.5,"publicationDate":"2025-09-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145007757","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

Fiber Bragg grating pressure sensor based on multi-hinges three-levers structure 基于多铰链三杠杆结构的光纤光栅压力传感器

IF 2.5 3区物理与天体物理

Optics Communications Pub Date : 2025-09-03 DOI: 10.1016/j.optcom.2025.132417

Shuhui Wei , Qiang Liu , Chao Ma , Jianxin Wang , Pengfei Lu , Tingting Lv , Yudan Sun , Jingwei Lv , Paul K. Chu , Chao Liu

{"title":"Fiber Bragg grating pressure sensor based on multi-hinges three-levers structure","authors":"Shuhui Wei , Qiang Liu , Chao Ma , Jianxin Wang , Pengfei Lu , Tingting Lv , Yudan Sun , Jingwei Lv , Paul K. Chu , Chao Liu","doi":"10.1016/j.optcom.2025.132417","DOIUrl":"10.1016/j.optcom.2025.132417","url":null,"abstract":"<div><div>A novel diaphragm pressure sensor based on multi-hinges three-levers structure is proposed and verified. The multi-hinges three-levers structure effectively amplifies the strain of the diaphragm and transfers to the fiber Bragg grating (FBG) which is pasted on the structure, and then the pressure can be measured by observing the central wavelength shift of FBG. The amplification principle of the three-levers structure is analyzed and optimized using the finite element methods. Then the sensor is manufactured and tested in the experiment. The results indicate that the sensitivity of the sensor reaches 4.37 p.m./kPa in the measurement range of 0–1.5 MPa. Meanwhile, another FBG is employed for monitoring temperature and eliminating the cross-sensitivity between temperature and strain. The temperature sensitivity is 11.09 p.m./°C in the range of 20–80 °C. The designed sensor exhibits higher sensitivity and can measure temperature and pressure simultaneously. It has a potential application prospect in the field of the pressure monitoring of oil and gas pipelines.</div></div>","PeriodicalId":19586,"journal":{"name":"Optics Communications","volume":"596 ","pages":"Article 132417"},"PeriodicalIF":2.5,"publicationDate":"2025-09-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145007758","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

Quasi-BIC mode and refractive index sensing by asymmetric silicon nanodisk arrays 非对称硅纳米片阵列的准bic模式和折射率传感

IF 2.5 3区物理与天体物理

Optics Communications Pub Date : 2025-09-03 DOI: 10.1016/j.optcom.2025.132421

Dongpeng Zhao , Xiangxian Wang , Yizhen Chen , Xijun Rao , Jiayao Gao , Yunping Qi , Hua Yang , Xianchuang Zheng

{"title":"Quasi-BIC mode and refractive index sensing by asymmetric silicon nanodisk arrays","authors":"Dongpeng Zhao , Xiangxian Wang , Yizhen Chen , Xijun Rao , Jiayao Gao , Yunping Qi , Hua Yang , Xianchuang Zheng","doi":"10.1016/j.optcom.2025.132421","DOIUrl":"10.1016/j.optcom.2025.132421","url":null,"abstract":"<div><div>This study proposes a metasurface consisting of silicon nanodisk arrays periodically arranged on a silica substrate to excite quasi-bound states in the continuum(Q-BIC) modes. Through introducing symmetry breaking, the metasurface successfully excites Q-BIC modes with an exceptionally high quality factor(Q-factor). To further elucidate the generation mechanisms and the key factors contributing to the high Q-factor, the multipolar radiation characteristics, optical field distributions, and sensing performance are systematically investigated under three distinct symmetry-breaking configurations. The transmission spectra and electric field distributions, calculated using the finite-difference time-domain method, are complemented by the multipolar radiation theory, which provides profound insights into the underlying physical mechanisms and optical responses of structural symmetry breaking. The resonant peaks that emerge in the transmission spectra exhibit pronounced Fano line shapes that are characteristic of Q-BIC modes. Based on the advantage of optical field modulation enabled by the asymmetric silicon nanodisk array, we apply it to refractive index sensing. The metasurface delivers outstanding performance, exhibiting a maximum Q-factor of 81696 and a maximum sensitivity of 541 nm/RIU<sup>−1</sup> in the gas environment. These results confirm that the proposed metasurface sustains ultra-high-Q resonances with exceptional sensitivity, highlighting its significant potential for next-generation optical sensing and modulation technologies.</div></div>","PeriodicalId":19586,"journal":{"name":"Optics Communications","volume":"596 ","pages":"Article 132421"},"PeriodicalIF":2.5,"publicationDate":"2025-09-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145010815","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

Versatile pulses and dynamic evolution in a 1.7-μm ultrafast Tm-doped fiber laser 1.7 μm超快掺铥光纤激光器的多用途脉冲和动态演化

IF 2.5 3区物理与天体物理

Optics Communications Pub Date : 2025-09-02 DOI: 10.1016/j.optcom.2025.132419

Zhenhong Wang, Jinhai Zhu, Yubo Ji, Jun Liu, Yufeng Song

引用次数: 0

Fabry-Pérot etalon walk-off loss in ring cavities 环腔中的法布里-帕氏准子漂移损失

IF 2.5 3区物理与天体物理

Optics Communications Pub Date : 2025-09-02 DOI: 10.1016/j.optcom.2025.132381

U. Eismann

引用次数: 0

Inverse design of multispectral metamaterials with laser-infrared-visible camouflage and thermal 具有激光-红外-可见伪装和热成像的多光谱超材料的反设计

IF 2.5 3区物理与天体物理

Optics Communications Pub Date : 2025-09-02 DOI: 10.1016/j.optcom.2025.132394

Ya-Bo Lin, Shu-Wen Zheng, Meng-Dan Qian

{"title":"Inverse design of multispectral metamaterials with laser-infrared-visible camouflage and thermal","authors":"Ya-Bo Lin, Shu-Wen Zheng, Meng-Dan Qian","doi":"10.1016/j.optcom.2025.132394","DOIUrl":"10.1016/j.optcom.2025.132394","url":null,"abstract":"<div><div>The application of advanced detection technologies has made single-band camouflage materials ineffective. Therefore, it is necessary to develop infrared multi-band camouflage technology. Here, we propose a design method that combines genetic algorithm (GA) and rigorous coupled-wave analysis (RCWA) to achieve compatible camouflage across visible, near-infrared laser, and mid-infrared bands for a multilayer structure. By precisely controlling the thickness of the top layer material, this structure can exhibit different colors within the visible light band, thereby achieving a camouflage effect in the visible light band. Besides, the structure has high absorption in the laser band (α1.06 μm = 0.91, α1.55 μm = 0.99, α10.6 μm = 0.98), low emissivity in the infrared bands(α3-5μm = 0.29, α8-14μm = 0.29). The relatively high average emissivity in the non-atmospheric double-window band (ε2.5–3 μm = 0.41, ε5-8μm = 0.78) facilitate effective heat dissipation. This research provides a method for designing multi-spectral compatible camouflage technology which holds potential application value in military fields.</div></div>","PeriodicalId":19586,"journal":{"name":"Optics Communications","volume":"595 ","pages":"Article 132394"},"PeriodicalIF":2.5,"publicationDate":"2025-09-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144989351","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