Optics Communications最新文献_第2页

Blue diode pumping: unveiling the potential for deep-red Ho3+-doped fluoride fiber lasers 蓝色二极管泵浦：揭示深红色掺Ho3+氟化物光纤激光器的潜力

IF 2.2 3区物理与天体物理

Optics Communications Pub Date : 2025-05-09 DOI: 10.1016/j.optcom.2025.131983

Peng Wang , Xindie Chen , Wei Shi , Yaolin Fei , Yao Ma , Liujing Xu , Dawid Piatkowski , Wensong Li

{"title":"Blue diode pumping: unveiling the potential for deep-red Ho3+-doped fluoride fiber lasers","authors":"Peng Wang , Xindie Chen , Wei Shi , Yaolin Fei , Yao Ma , Liujing Xu , Dawid Piatkowski , Wensong Li","doi":"10.1016/j.optcom.2025.131983","DOIUrl":"10.1016/j.optcom.2025.131983","url":null,"abstract":"<div><div>Blue laser diodes (LDs) have gained significant attention as cost-effective pump sources for efficient visible rare-earth (RE) doped fiber lasers, owing to their high power and brightness. In this study, we investigate the potential of blue LDs as pump sources for deep-red holmium-doped fluorozirconate glass (Ho:ZrF<sub>4</sub>) fiber lasers. We report, for the first time, watt-level, high-efficiency operation of a 75X nm Ho:ZrF<sub>4</sub> fiber laser directly pumped by 442 nm LDs. This diode-pumped laser achieved a record output power of 1.04 W, with a maximum slope efficiency of about 53 % for a 25-cm long fiber—corresponding to approximately 90 % of the Stokes efficiency limit. Additionally, we demonstrate the shortest cavity length ever used for a deep-red fiber laser: several centimeters level 75X nm cavity fiber laser pumped by blue LDs. Operating under dual-wavelength pumping at 442 and 449 nm, this laser achieved an output power of 0.15 W and a slope efficiency of 15 % with respect to the 442 nm pump power. The experimental results are in close agreement with numerical model used to optimize all cavity configurations.</div></div>","PeriodicalId":19586,"journal":{"name":"Optics Communications","volume":"589 ","pages":"Article 131983"},"PeriodicalIF":2.2,"publicationDate":"2025-05-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143948311","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

Unidirectional frequency doubling laser based on lithium niobate on insulator 基于铌酸锂绝缘体的单向倍频激光器

IF 2.2 3区物理与天体物理

Optics Communications Pub Date : 2025-05-09 DOI: 10.1016/j.optcom.2025.131984

Ruyi Xia , Ranran Xie , Xueqing Cui , Yuechen Jia , Feng Chen

引用次数: 0

Diamond-like carbon on gold and titanium dioxide grating-enhanced D-shaped PCF SPR refractive index sensor 类金刚石碳在金和二氧化钛上的光栅增强d形PCF SPR折射率传感器

IF 2.2 3区物理与天体物理

Optics Communications Pub Date : 2025-05-08 DOI: 10.1016/j.optcom.2025.131980

İlhan Erdogan , Yusuf Dogan , Ali Altuntepe

{"title":"Diamond-like carbon on gold and titanium dioxide grating-enhanced D-shaped PCF SPR refractive index sensor","authors":"İlhan Erdogan , Yusuf Dogan , Ali Altuntepe","doi":"10.1016/j.optcom.2025.131980","DOIUrl":"10.1016/j.optcom.2025.131980","url":null,"abstract":"<div><div>In this work, a novel D-shaped photonic crystal fiber (PCF) surface plasmon resonance (SPR) refractive index sensor structure is designed, optimized, and numerically investigated via the finite element method (FEM)-based COMSOL Multiphysics in the near-infrared region incorporating diamond-like carbon (DLC), gold (Au), and titanium dioxide (TiO<sub>2</sub>) grating. According to the available literature, the integration of DLC thin film with a D-shaped PCF SPR sensor has not been explored. The optical and chemical properties of DLC thin film are obtained through our experimental study by utilizing the Plasma Enhanced Chemical Vapor Deposition method. The refractive index dispersion of DLC film is used in FEM based numerical analysis. Due to DLC's key advantages, including high hardness and strong wear resistance, corrosion resistance, chemical stability, biocompatibility and hydrophobicity, it is an ideal material for sensor applications. Regarding these advantages, we were motivated to demonstrate the applicability of DLC on the D-shaped PCF-SPR sensor structure for the first time in the literature. From the FEM study, it is observed that compared to Au/TiO<sub>2</sub> and Au/TiO<sub>2</sub>/DLC, the sensor with DLC showed a 43.61 % improvement, and sensitivity was calculated as 31745 nm/RIU in the 1.39–1.40 refractive index range. Numerical results indicate that integrating DLC into the D-shaped PCF-SPR sensor structure is an effective approach. Compared to other related works, the designed PCF SPR sensor has improved responses, a longer lifespan, and a wider sensing area in addition to DLC advantages. Because of these advantages, the novel proposed D-shaped PCF SPR structure with DLC demonstrates remarkable sensing potential for use in applications including chemical, medical, biochemical, and other sensing applications.</div></div>","PeriodicalId":19586,"journal":{"name":"Optics Communications","volume":"588 ","pages":"Article 131980"},"PeriodicalIF":2.2,"publicationDate":"2025-05-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143941099","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

Influence of dielectric confinement and size effect on nonlinear absorption in CdSe nanoplatelets 介电约束和尺寸效应对CdSe纳米片非线性吸收的影响

IF 2.2 3区物理与天体物理

Optics Communications Pub Date : 2025-05-08 DOI: 10.1016/j.optcom.2025.131882

M.K. Manvelyan , M.A. Mkrtchyan , Kh.S. Khachatryan , H.A. Sarkisyan

引用次数: 0

Simultaneous low-pass and high-pass filtering based on a metal-insulator-metal structure with SPPs 基于带spp的金属绝缘子-金属结构的同时低通和高通滤波

IF 2.2 3区物理与天体物理

Optics Communications Pub Date : 2025-05-08 DOI: 10.1016/j.optcom.2025.131979

Jiaqi Song, He Tian, Xinyi Zhang

{"title":"Simultaneous low-pass and high-pass filtering based on a metal-insulator-metal structure with SPPs","authors":"Jiaqi Song, He Tian, Xinyi Zhang","doi":"10.1016/j.optcom.2025.131979","DOIUrl":"10.1016/j.optcom.2025.131979","url":null,"abstract":"<div><div>In this paper, a metal-insulator-metal (MIM) structure with dual output channels based on SPPs is proposed and discussed, which can realize both low-pass and high-pass filtering effects simultaneously. The straight waveguide with a thin metal silver baffle outputs low-pass filtering and the other waveguide composed of multiple cavities outputs high-pass filtering. After optimizing the structural parameters, relatively ideal low-pass and high-pass filtering effects are achieved, and the edge steepnesses of low-pass and high-pass output channels are −3.14 × 10<sup>−3</sup>/nm and 4.54 × 10<sup>−3</sup>/nm, respectively. In addition, in order to adjust the filtering effects, standard optical glass BK-7 with Kerr effect is utilized in the structure. The adjustment sensitivities of low-pass and high-pass output channels caused by external light irradiance are 11.7 nm μm<sup>2</sup>/W and 13.9 nm μm<sup>2</sup>/W, respectively. The dual channels filter with simultaneous low-pass and high-pass filtering provides novel conceptions for the construction of filters, and may have broad applications in the field of optical information processing.</div></div>","PeriodicalId":19586,"journal":{"name":"Optics Communications","volume":"588 ","pages":"Article 131979"},"PeriodicalIF":2.2,"publicationDate":"2025-05-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143936847","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

Adaptive selection of two channels in optical camera communication utilizing deep neural networks 基于深度神经网络的光学摄像机通信双通道自适应选择

IF 2.2 3区物理与天体物理

Optics Communications Pub Date : 2025-05-08 DOI: 10.1016/j.optcom.2025.131976

Huamao Huang , Haoxuan Chen , Tianxiang Lan , Haiying Hu

{"title":"Adaptive selection of two channels in optical camera communication utilizing deep neural networks","authors":"Huamao Huang , Haoxuan Chen , Tianxiang Lan , Haiying Hu","doi":"10.1016/j.optcom.2025.131976","DOIUrl":"10.1016/j.optcom.2025.131976","url":null,"abstract":"<div><div>With the increasing popularity of mobile cameras, optical camera communication (OCC) has garnered significant attention. However, in indoor environment, blockages and shadows pose frequent concerns. To address this issue, we developed a dual-channel OCC system utilizing front and rear rolling-shutter cameras, and proposed an adaptive method for selecting the optimal channel through image processing utilizing deep neural networks (DNNs), ensuring seamless switching to the alternative channel in case of blockage, thereby maintaining robust communication performance. After image pre-processing, we adopted YOLOv8n, a detection DNN, to detect the preamble of the data packet in stripe pattern images. This approach exhibited superior performance compared to traditional thresholding-based algorithm. Subsequently, the data packet was recovered in the form of stripe pattern images. To evaluate the quality of each pair of stripe pattern images captured by both channels and automatically select the optimal channel for further decoding, we employed VGG16, a classification DNN. This method demonstrated a higher accuracy and a shorter inference time compared to the eye-diagram algorithm and k-means clustering scheme. Consequently, in the dual-channel system, as long as one of the two channels exhibits a low bit-error rate (BER), the dual-channel system can achieve a low BER, regardless of the communication performance of the other channel.</div></div>","PeriodicalId":19586,"journal":{"name":"Optics Communications","volume":"589 ","pages":"Article 131976"},"PeriodicalIF":2.2,"publicationDate":"2025-05-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143934884","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

Research on dual-wavelength output characteristics of blue diode laser with dual Littman external cavities 双Littman外腔蓝色二极管激光器双波长输出特性研究

IF 2.2 3区物理与天体物理

Optics Communications Pub Date : 2025-05-08 DOI: 10.1016/j.optcom.2025.131981

Xiuzheng Wang, Changcheng Duan, Xuanyu Hu, Yongkang Xiong, Yu Xiao, Xiahui Tang, Hao Peng

{"title":"Research on dual-wavelength output characteristics of blue diode laser with dual Littman external cavities","authors":"Xiuzheng Wang, Changcheng Duan, Xuanyu Hu, Yongkang Xiong, Yu Xiao, Xiahui Tang, Hao Peng","doi":"10.1016/j.optcom.2025.131981","DOIUrl":"10.1016/j.optcom.2025.131981","url":null,"abstract":"<div><div>In this paper, we constructed a dual Littman structure by splitting a diode laser along the slow axis to achieve a narrow-linewidth, dual-wavelength output. Both locked peaks are tunable in the wavelength and controllable in intensity ratio. With one wavelength locked at 447.23 nm at 1.5 A driving current, the tuning range of the other wavelength is from 443.92 nm to 450.61 nm. A maximum wavelength interval of 4.02 nm (6.06 THz frequency interval) between the locked peaks is observed by adjusting the angle of the mirrors and changing the energy ratio of the two feedback beams. An output power of 1.12 W is achieved when the wavelength interval is fixed at 1.4 nm, with an optical-to-optical efficiency of 51.32 %. We also found that the output energy from the external cavity was reduced when the feedback was introduced, as opposed to the free-running state. This was due to spectral hole burning, which lowered the gain of the locked wavelength. Additionally, at high injection current, the changes in the output wavelengths of the blue diode laser could influence the lateral mode distribution. This structure can also be applied to diode arrays to achieve higher-power dual-wavelength output.</div></div>","PeriodicalId":19586,"journal":{"name":"Optics Communications","volume":"589 ","pages":"Article 131981"},"PeriodicalIF":2.2,"publicationDate":"2025-05-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143931966","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

Concave microlens assisted optoplasmonic trapping in Au nanohole 凹微透镜辅助光等离子体在金纳米孔中的捕获

IF 2.2 3区物理与天体物理

Optics Communications Pub Date : 2025-05-06 DOI: 10.1016/j.optcom.2025.131971

YiLu Chen , Yan Zhao , Li Wang , Yingzhou Huang

{"title":"Concave microlens assisted optoplasmonic trapping in Au nanohole","authors":"YiLu Chen , Yan Zhao , Li Wang , Yingzhou Huang","doi":"10.1016/j.optcom.2025.131971","DOIUrl":"10.1016/j.optcom.2025.131971","url":null,"abstract":"<div><div>Utilizing the dielectric microstructure to confine optical energy, this work significantly enhances localized surface plasmon resonance (LSPR) effects for superior light-matter interaction. This study introduces an optoplasmonic tweezer integrated with a concave dielectric microlens and the metal thin-film system, engineered for efficient nanoparticle trapping and dynamic manipulation. Using finite element analysis, we optimized the size and spacing of Au nanoparticles (AuNPs) on the thin film to maximize the electric field intensity in the nanohole on the Au film. The structural parameters of the designed concave microlens were also investigated to optimize light confinement while enabling fluid transportation function. The results demonstrate that the optoplasmonic tweezer we proposed can achieve an approximately 400-fold enhancement of the electric field within the Au nanohole, exhibiting exceptional performance in trapping nanoparticles in a fluid. We propose an optoplasmonic structure composed of concave microlens and AuNPs, which can enable simultaneous integration both microfluidic channels and trap nanoparticles, providing a new idea for trapping nanoparticles in fluids.</div></div>","PeriodicalId":19586,"journal":{"name":"Optics Communications","volume":"588 ","pages":"Article 131971"},"PeriodicalIF":2.2,"publicationDate":"2025-05-06","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143931504","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

Noise reduction and background correction of overlapped UV absorption spectra based on EWT-ASG and airPLS 基于EWT-ASG和airPLS的重叠紫外吸收光谱降噪与背景校正

IF 2.2 3区物理与天体物理

Optics Communications Pub Date : 2025-05-05 DOI: 10.1016/j.optcom.2025.131910

Shiqi Zhang , Boqiang Fan , Kun You , Qinyi Yu , Ying He , Liming Wang , Yujun Zhang

{"title":"Noise reduction and background correction of overlapped UV absorption spectra based on EWT-ASG and airPLS","authors":"Shiqi Zhang , Boqiang Fan , Kun You , Qinyi Yu , Ying He , Liming Wang , Yujun Zhang","doi":"10.1016/j.optcom.2025.131910","DOIUrl":"10.1016/j.optcom.2025.131910","url":null,"abstract":"<div><div>High concentrations of SO<sub>2</sub> and NO emitted by vehicles not only endanger human health, but also cause a negative impact on the environment such as acid rain. The absorption intensities of NO and SO<sub>2</sub> at the ultraviolet region 201–230 nm are larger, which is theoretically more conducive to concentration inversion during optical monitoring. However, it is greatly limited by the spectrum overlapping of NO and SO<sub>2</sub> at this range, which was often accompanied by larger errors. Thus, few methods were used at this region for monitoring concentration. In this work, the higher sensitive detection method aimed at alleviated the problem of large retrieval error to the serious overlapping of UV-absorption spectrum was developed. EWT-ASG and airPLS were used for noise reduction and background correction. According to the theory of spectral superposition, the differential optical density (DOD) of NO, SO<sub>2</sub> and the gas mixture at the wavelength range of 201–230 nm were separated. Moreover, parameter correction method on gas concentration retrieval was applied, and the deviation caused by incomplete separation was corrected. The strength of absorption peaks and lower interference were comprehensively considered. Finally, the NO and SO<sub>2</sub> concentrations, the corresponding relative errors and the detection limits were calculated. Compared with the counterparts obtained by polynomial fit, the errors were decreased ∼30 %. This work can provide a reference for simultaneously monitoring of high concentrations of SO<sub>2</sub> and NO in complex environments with enhanced environmental adaptability.</div></div>","PeriodicalId":19586,"journal":{"name":"Optics Communications","volume":"590 ","pages":"Article 131910"},"PeriodicalIF":2.2,"publicationDate":"2025-05-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143941889","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

Inverse design of polarization-insensitive all-dielectric BIC metasurface with dual Fano-resonances by deep learning 基于深度学习的双fano共振极化不敏感全介质BIC超表面反设计

IF 2.2 3区物理与天体物理

Optics Communications Pub Date : 2025-05-05 DOI: 10.1016/j.optcom.2025.131964

Hanxiang Yu , Yuping Liu , Xi Lu , Zheng Zhu

{"title":"Inverse design of polarization-insensitive all-dielectric BIC metasurface with dual Fano-resonances by deep learning","authors":"Hanxiang Yu , Yuping Liu , Xi Lu , Zheng Zhu","doi":"10.1016/j.optcom.2025.131964","DOIUrl":"10.1016/j.optcom.2025.131964","url":null,"abstract":"<div><div>The quasi-bound states in the continuum (quasi-BIC) based on all-dielectric metasurfaces have been widely applied to enhance nonlinear optical processes. To this end, a polarization-insensitive all-dielectric tetrameric metasurface with dual-quasi-BIC is demonstrated for the third-harmonic generation (THG) in this paper. In practical applications, the structural parameters of the metasurface need to be adjusted according to the target excitation wavelength to produce a wavelength-matched quasi-BIC. However, structural adjustment is time-consuming by forward simulation. Therefore, a rapid inverse design method based on deep learning is proposed. This method consists of dual-channel convolutional neural network (DCCNN), multi-head attention (MHA) and Gramian angular field (GAF) transformation. GAF can effectively encode the relationship between transmission values at different wavelengths, which is conducive to obtaining complete transmission spectrum characteristics. Finally, the proposed all-dielectric metasurface can easily achieve frequency conversion from fundamental waves (1300 nm–1600 nm) to third-harmonic waves (433 nm–533 nm) and the inverse design can reach the mean relative deviation of 0.8 %.</div></div>","PeriodicalId":19586,"journal":{"name":"Optics Communications","volume":"587 ","pages":"Article 131964"},"PeriodicalIF":2.2,"publicationDate":"2025-05-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143912367","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