Optics Communications最新文献_第5页

Decoding nanosphere-driven structural color in photonic crystals 解码光子晶体中纳米球驱动的结构色

IF 2.5 3区物理与天体物理

Optics Communications Pub Date : 2025-09-17 DOI: 10.1016/j.optcom.2025.132476

Chonglin Min , Yanqin Ma , Jiabei Li, Yao Li, Kun Gao, Xiaohong Li

{"title":"Decoding nanosphere-driven structural color in photonic crystals","authors":"Chonglin Min , Yanqin Ma , Jiabei Li, Yao Li, Kun Gao, Xiaohong Li","doi":"10.1016/j.optcom.2025.132476","DOIUrl":"10.1016/j.optcom.2025.132476","url":null,"abstract":"<div><div>Structural colors of photonic crystals demonstrate significant application value in optical sensing and anti-counterfeiting due to their high stability and environmental friendliness. However, current research still lacks systematic investigation into the structure-property relationship between face-centered cubic (FCC) photonic crystal nanosphere parameters (e.g., particle size, refractive index) and structural color characteristics (e.g., peak wavelength, reflectance). This unresolved scientific issue hinders the further development and applications of photonic crystal structural colors. This study establishes a three-dimensional FCC photonic crystal model using COMSOL Multiphysics simulations. Through systematic adjustment of key parameters including nanosphere radius (<em>r</em> = 75–150 nm), refractive index (<em>n</em> = 1.5–3.0), and crystal thickness, we investigate the color variation patterns. Based on the obtained reflection spectra, mathematical models are developed to describe the relationships between reflectance peak (<em>R</em><sub><em>M</em></sub>), full width at half maximum (<em>FWHM</em>), peak wavelength <em>(λ</em><sub><em>M</em></sub>), and nanosphere parameters. Furthermore, combining CIE 1931 xyY colorimetric analysis with HSV color space, we propose optimization criteria for achieving high-saturation structural colors. The findings provide theoretical guidance for parametric design and performance optimization of photonic crystal structural colors.</div></div>","PeriodicalId":19586,"journal":{"name":"Optics Communications","volume":"596 ","pages":"Article 132476"},"PeriodicalIF":2.5,"publicationDate":"2025-09-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145159245","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

Wavelength calibration technology of overlapping spectra in MRR-WDM transmission systems MRR-WDM传输系统中重叠光谱的波长校准技术

IF 2.5 3区物理与天体物理

Optics Communications Pub Date : 2025-09-17 DOI: 10.1016/j.optcom.2025.132484

Kejian Zhu , Zhenmin Du , Tuo Li , Feng Zhang , Changhong Wang , Kang Su , Guoqing Li , Xin Xi , Fen Guo , Xinxin Yuan

引用次数: 0

Gain-switched laser-diode-pumped Er3+:CaF2 crystal laser at 2.8 μm 2.8 μm增益开关激光二极管泵浦Er3+:CaF2晶体激光器

IF 2.5 3区物理与天体物理

Optics Communications Pub Date : 2025-09-17 DOI: 10.1016/j.optcom.2025.132469

Lifen Liao , Zhen Zhang , Zhanduo Qiao , Wenqi Ge , Changjun Ke

{"title":"Gain-switched laser-diode-pumped Er3+:CaF2 crystal laser at 2.8 μm","authors":"Lifen Liao , Zhen Zhang , Zhanduo Qiao , Wenqi Ge , Changjun Ke","doi":"10.1016/j.optcom.2025.132469","DOIUrl":"10.1016/j.optcom.2025.132469","url":null,"abstract":"<div><div>The energy level transitions of the Er<sup>3+</sup>:CaF<sub>2</sub> crystal are analyzed, and the rate equation of the Er<sup>3+</sup>:CaF<sub>2</sub> laser in gain-switching mode is calculated. The relationship between the peak photon energy and pulse duration of the output laser is simulated in the gain-switch mode of the Er<sup>3+</sup>:CaF<sub>2</sub> crystal laser. Based on theoretical analysis, we utilize Er<sup>3+</sup>:CaF<sub>2</sub> crystals with a low doping concentration of 3 %, grown via the temperature gradient method, as the gain medium to develop a laser oscillation. For the first time, a 50-Hz frequency and 2.76-μm wavelength laser output is obtained via laser diode room-temperature gain-switched pumping. The laser pulse duration reaches 228.4 ns, with a single-pulse energy of 30.0 μJ and a peak power of 0.131 kW. When compared with the existing Er<sup>3+</sup>:CaF<sub>2</sub> stable Q-switching oscillation, the shortest pulse duration and high peak output power for the Er<sup>3+</sup>:CaF<sub>2</sub> crystal pumped by laser diode is achieved. Experimental results demonstrate that low-doped Er<sup>3+</sup>:CaF<sub>2</sub> crystals can be used as laser material for room-temperature operation, nanosecond pulse duration, high peak power, and 3-μm wavelength laser.</div></div>","PeriodicalId":19586,"journal":{"name":"Optics Communications","volume":"596 ","pages":"Article 132469"},"PeriodicalIF":2.5,"publicationDate":"2025-09-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145119243","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

Controlling soliton spectral tunneling via symmetric Airy pulses at the advanced stage of supercontinuum generation 利用对称Airy脉冲控制超连续谱产生后期孤子的谱隧穿

IF 2.5 3区物理与天体物理

Optics Communications Pub Date : 2025-09-17 DOI: 10.1016/j.optcom.2025.132480

Qian Wang , Changwen Xu , Yanxia Gao , Zhiteng Wang , Dianyuan Fan , Lifu Zhang

引用次数: 0

Short-pulsed passively Q-switched ∼2.8 μm bulk laser based on VS2/tellurene composite saturable absorber 基于VS2/碲复合饱和吸收体的短脉冲被动调q ~ 2.8 μm体激光器

IF 2.5 3区物理与天体物理

Optics Communications Pub Date : 2025-09-16 DOI: 10.1016/j.optcom.2025.132452

Ting lun Xing , Xiao yu Wang , Hao Pei , Ao lin Jiang , Dun lu Sun , Jin long Zhang , Yu zong Gu

{"title":"Short-pulsed passively Q-switched ∼2.8 μm bulk laser based on VS2/tellurene composite saturable absorber","authors":"Ting lun Xing , Xiao yu Wang , Hao Pei , Ao lin Jiang , Dun lu Sun , Jin long Zhang , Yu zong Gu","doi":"10.1016/j.optcom.2025.132452","DOIUrl":"10.1016/j.optcom.2025.132452","url":null,"abstract":"<div><div>The assembly of two-dimensional materials can provide a strategy for integrating their superior properties. In this work, the petal-shaped VS<sub>2</sub> self-assembly was synthesized via a solvothermal process and the VS<sub>2</sub>/tellurene (VS<sub>2</sub>/Te) composite saturable absorber mirror (SAM) was prepared by using the liquid-phase exfoliation technique. The open-aperture Z-scan measurements revealed that the VS<sub>2</sub>/Te composite SAM exhibits a modulation depth of ∼5.6 % and a total unsaturated loss of ∼2.4 % at 2.8 μm, highlighting its excellent saturable absorption performance. With this as-prepared SAM, short-pulse passively Q-switched Er:YAP laser operation around 2.8 μm was realized. Under an absorbed pump power of 8.1 W, the minimum pulse width of 160.2 ns with a repetition rate of 194.6 kHz and average output power of 0.65 W was achieved. These results show the outstanding performance of the VS<sub>2</sub>/Te composite film as an optical switching device at 2.8 μm, enabling the generation of short-pulse lasers in the mid-infrared region.</div></div>","PeriodicalId":19586,"journal":{"name":"Optics Communications","volume":"596 ","pages":"Article 132452"},"PeriodicalIF":2.5,"publicationDate":"2025-09-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145106675","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

Gain determination of new erbium-bismuth doped germanium silicate optical glass for double-band optical amplification 双波段光学放大新型掺铒铋硅酸锗光学玻璃的增益测定

IF 2.5 3区物理与天体物理

Optics Communications Pub Date : 2025-09-16 DOI: 10.1016/j.optcom.2025.132472

D. Mareš , V. Jeřábek , J. Šmejcký , T. Martan , V. Prajzler , P. Vařák , San-Liang Lee , P. Nekvindová

{"title":"Gain determination of new erbium-bismuth doped germanium silicate optical glass for double-band optical amplification","authors":"D. Mareš , V. Jeřábek , J. Šmejcký , T. Martan , V. Prajzler , P. Vařák , San-Liang Lee , P. Nekvindová","doi":"10.1016/j.optcom.2025.132472","DOIUrl":"10.1016/j.optcom.2025.132472","url":null,"abstract":"<div><div>The research examines the measurement and modeling of gain in optical silica-germanium glass doped with erbium and bismuth activators to implement a two-band planar optical amplification. Including both activators enables bismuth active centers with germanium (BAC-Ge) to broaden amplification across the near-infrared bandwidth, reaching up to 1650 nm, where the optical attenuation in telecommunications fibers is below 0.3 dB/km. We have outlined the amplification mechanism through the luminescence spectral response of the activators. The differential amplification gain of the fabricated active glasses was determined using a pulse measurement method alongside calculating a model based on waveguide propagation equations. A single source with a wavelength of 1480 nm was employed for pumping in both optical bands. The emission and absorption cross-section coefficients were derived from the luminescence spectra of glasses using the Füchtbauer-Ladenburg equation with a Gaussian approximation, along with McCumber's theory. The calculated differential gain values align closely with the measured results. Our findings suggest that the optical activity of BAC-Ge is significantly influenced by germanium doping in the amplification process through BAC-Ge centers.</div></div>","PeriodicalId":19586,"journal":{"name":"Optics Communications","volume":"596 ","pages":"Article 132472"},"PeriodicalIF":2.5,"publicationDate":"2025-09-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145221409","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

Highly sensitive V-groove refractive index sensor based on Box–Behnken design optimization and DNN prediction 基于Box-Behnken设计优化和深度神经网络预测的高灵敏度v型折射率传感器

IF 2.5 3区物理与天体物理

Optics Communications Pub Date : 2025-09-16 DOI: 10.1016/j.optcom.2025.132454

Jing Ma, Hao Wang, Zhengrong Tong, Pengxiang Li

{"title":"Highly sensitive V-groove refractive index sensor based on Box–Behnken design optimization and DNN prediction","authors":"Jing Ma, Hao Wang, Zhengrong Tong, Pengxiang Li","doi":"10.1016/j.optcom.2025.132454","DOIUrl":"10.1016/j.optcom.2025.132454","url":null,"abstract":"<div><div>A highly sensitive refractive index (RI) sensor based on surface plasmon resonance photonic crystal fiber (SPR-PCF) with a V-groove open channel and hexagonal air holes is proposed in this study. The sensor’s performance is numerically investigated via the Finite Element Method (FEM) implemented in COMSOL Multiphysics. The three structural parameters of polishing depth, gold film thickness, and hole spacing are optimized using the Box–Behnken Design (BBD) response surface method, achieving a maximum wavelength sensitivity of 26,000 nm/RIU and a resolution of <span><math><mrow><mn>3</mn><mo>.</mo><mn>85</mn><mo>×</mo><mn>1</mn><msup><mrow><mn>0</mn></mrow><mrow><mo>−</mo><mn>6</mn></mrow></msup></mrow></math></span> RIU. The sensor exhibits a broad detection range covering RI from 1.28 to 1.43. Furthermore, a deep neural network (DNN) model is employed to predict the refractive index by fitting the relationship between the resonance wavelength, loss value, and RI. The model achieves an <span><math><msup><mrow><mi>R</mi></mrow><mrow><mn>2</mn></mrow></msup></math></span> of 0.998, outperforming the potential of neural networks in modeling complex nonlinear interactions. The proposed sensor structure provides a novel solution for practical applications.</div></div>","PeriodicalId":19586,"journal":{"name":"Optics Communications","volume":"596 ","pages":"Article 132454"},"PeriodicalIF":2.5,"publicationDate":"2025-09-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145106721","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 nonlinear optical response of Au-doped CsPbI3 quantum dots and its application in all-optical modulation 掺金CsPbI3量子点的非线性光学响应增强及其在全光调制中的应用

IF 2.5 3区物理与天体物理

Optics Communications Pub Date : 2025-09-16 DOI: 10.1016/j.optcom.2025.132478

Endi Dai , Mengqi Lv , Zhe Hou , Maorong Wang , Qiuling Zhao , Xia Wang , Lihua Teng

{"title":"Enhanced nonlinear optical response of Au-doped CsPbI3 quantum dots and its application in all-optical modulation","authors":"Endi Dai , Mengqi Lv , Zhe Hou , Maorong Wang , Qiuling Zhao , Xia Wang , Lihua Teng","doi":"10.1016/j.optcom.2025.132478","DOIUrl":"10.1016/j.optcom.2025.132478","url":null,"abstract":"<div><div>Perovskite quantum dots (QDs) exhibit significant nonlinear optical (NLO) properties and are considered ideal candidate materials for realizing all-optical device applications. In this work, Au doping is employed to enhance the NLO response of CsPbI<sub>3</sub> QDs, which is systematically investigated using Z-scan, spatial self-phase modulation (SSPM), and white light interferometry (WLI) techniques. The results indicate that under the same laser intensity, Au-doped CsPbI<sub>3</sub> QDs exhibit a larger nonlinear refractive index and more pronounced light modulation refractive index changes compared to pure CsPbI<sub>3</sub> QDs. Based on this enhanced effect, all-optical modulation and optical information conversion were realized in cross-phase modulation (XPM) experiment, using a 532 nm pump laser and a 633 nm probe laser. Moreover, we also optimized the traditional experimental setup to enable a more facile and precise measurement of the time response delay, which is an important parameter in XPM measurements. This work demonstrates that Au-doped CsPbI<sub>3</sub> QDs are promising candidates for efficient all-optical modulation and hold great potential for applications in optical switching and information conversion.</div></div>","PeriodicalId":19586,"journal":{"name":"Optics Communications","volume":"596 ","pages":"Article 132478"},"PeriodicalIF":2.5,"publicationDate":"2025-09-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145119365","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

End-to-end subpixel positioning method for space dim and weak point targets based on multi-task learning 基于多任务学习的空间弱小目标端到端亚像素定位方法

IF 2.5 3区物理与天体物理

Optics Communications Pub Date : 2025-09-16 DOI: 10.1016/j.optcom.2025.132370

Ruixue Ma , Guopeng Ding , Shihao Han , Zhaoxiong Li , Zhiyu Bi , Zhencai Zhu , Haodong Yan

引用次数: 0

Plug-and-play algorithm based on hybrid priors for single-pixel imaging 基于混合先验的单像素成像即插即用算法

IF 2.5 3区物理与天体物理

Optics Communications Pub Date : 2025-09-16 DOI: 10.1016/j.optcom.2025.132477

Weijie Chang, Haowei Li, Pengsheng Zhou, Shengyao Xu, Feng Huang

{"title":"Plug-and-play algorithm based on hybrid priors for single-pixel imaging","authors":"Weijie Chang, Haowei Li, Pengsheng Zhou, Shengyao Xu, Feng Huang","doi":"10.1016/j.optcom.2025.132477","DOIUrl":"10.1016/j.optcom.2025.132477","url":null,"abstract":"<div><div>Single-pixel imaging (SPI) is a powerful technique that captures scene data using a single-point detector with low cost, high signal-to-noise ratio and a broad spectral range. However, both the traditional model-driven methods relying on hand-crafted priors and the data-driven deep neural network methods still suffer from severe image degradation at ultralow sampling rates in practical applications. In this paper, we propose a novel hybrid-priors-driven plug-and-play (PnP) algorithm framework to significantly enhance the undersampling reconstruction performance. Unlike existing PnP methods that only rely on the deep denoising prior, but neglect the observation matrix physical prior information, we introduced an effective mask prior of the optical front-end to further boost the power of deep PnP framework. Extensive simulation and real data experimental results demonstrate that the proposed method achieves high quality image reconstruction at ultra-low sampling rates, and outperforms state-of-the-art PnP-based SPI algorithms, thereby facilitating the practical application of SPI technology.</div></div>","PeriodicalId":19586,"journal":{"name":"Optics Communications","volume":"596 ","pages":"Article 132477"},"PeriodicalIF":2.5,"publicationDate":"2025-09-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145106676","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