Photonics最新文献_第7页

Towards Implementation of 3D Amplitude Shaping at 515 nm and First Pulseshaping Experiments at PITZ 在 515 纳米波段实现三维振幅整形以及在 PITZ 进行首次脉冲整形实验

IF 2.4 4区物理与天体物理

Photonics Pub Date : 2023-12-21 DOI: 10.3390/photonics11010006

Andreas Hoffmann, J. Good, M. Gross, M. Krasilnikov, Frank Stephan

引用次数: 0

A Comprehensive Study on Phase Sensitive Amplification and Stimulated Brillouin Scattering in Nonlinear Fibers with Longitudinally Varying Dispersion 纵向色散变化非线性光纤中的相敏放大和受激布里渊散射综合研究

IF 2.4 4区物理与天体物理

Photonics Pub Date : 2023-12-20 DOI: 10.3390/photonics11010003

Debanuj Chatterjee, Sugeet Sunder, Mrudula Krishna, Suchita Yadav, Alexej Sysoliatin, Konstantin Gochelashvili, Sergey Semjonov, D. Venkitesh, Andrey Konyukhov

{"title":"A Comprehensive Study on Phase Sensitive Amplification and Stimulated Brillouin Scattering in Nonlinear Fibers with Longitudinally Varying Dispersion","authors":"Debanuj Chatterjee, Sugeet Sunder, Mrudula Krishna, Suchita Yadav, Alexej Sysoliatin, Konstantin Gochelashvili, Sergey Semjonov, D. Venkitesh, Andrey Konyukhov","doi":"10.3390/photonics11010003","DOIUrl":"https://doi.org/10.3390/photonics11010003","url":null,"abstract":"Fiber optic parametric and phase sensitive amplifiers (PSA) are interesting for modern day communication technologies due to their low noise and high gain amplification properties with a potential for all optical signal processing and wide band operation. PSAs are typically employed in either a single pump or dual pump configuration. In this article we explore the utilities of both configurations, however considering a fiber with a longitudinally varying dispersion profile. For the single pump case, PSA operation at large pump-signal detunings, that arise due to the longitudinal dispersion variation, were studied numerically, and recipes of using the system as a wide band wavelength selective filter were laid out. For the dual-pump case, emphasis was laid on achieving a larger signal gain, by reducing stimulated Brillouin scattering (SBS) that prevents large pump power transport through the nonlinear fiber. First, the effects of dispersion variation on the gain of a dual pump PSA were studied analytically and numerically in order to optimize the dispersion variation profile, neglecting SBS processes. Then we independently studied the SBS dynamics of the system numerically. A sinusoidally dispersion oscillating fiber (DOF) was found to be an optimal candidate with respect to its PSA and SBS performances. To establish this claim, we also experimentally compared the performance of an available DOF over a standard highly nonlinear fiber (HNLF) that has a constant dispersion profile and established its utility for designing a high gain PSA system, thanks to the SBS mitigation due to the longitudinal dispersion variation of the fiber.","PeriodicalId":20154,"journal":{"name":"Photonics","volume":"82 10","pages":""},"PeriodicalIF":2.4,"publicationDate":"2023-12-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"138956818","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"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 the Structure Design of Silicon Avalanche Photodiode with Near-Ultraviolet High Responsivity 近紫外高响应硅雪崩光电二极管结构设计研究

IF 2.4 4区物理与天体物理

Photonics Pub Date : 2023-12-19 DOI: 10.3390/photonics11010001

Guangtong Guo, Wei Chen, Kaifeng Zheng, Jinguang Lv, Yuxin Qin, Baixuan Zhao, Yingze Zhao, Yupeng Chen, Dan-ning Gao, Jingqiu Liang, Weibiao Wang

引用次数: 0

Generation of Narrow Modes in Random Raman Fiber Laser Based on Multimode Fiber 基于多模光纤的随机拉曼光纤激光器窄模的产生

IF 2.4 4区物理与天体物理

Photonics Pub Date : 2023-12-19 DOI: 10.3390/photonics11010002

I. Vatnik, Oleg A. Gorbunov, Dmitry V. Churkin

引用次数: 0

A Laser with Intracavity Spectral Beam Combining with Continuous-Wave and Pulse-Periodic Pumping of Various Lasing Channels 带有腔内光谱光束组合的激光器，采用连续波和脉冲周期泵浦的各种激光通道

IF 2.4 4区物理与天体物理

Photonics Pub Date : 2023-12-18 DOI: 10.3390/photonics10121389

Vladimir Kamynin, Vitalii V. Kashin, Dmitri A. Nikolaev, A. Trikshev, Vladimir B. Tsvetkov

引用次数: 0

Tuning Q-Factor and Perfect Absorption Using Coupled Tamm States on Polarization-Preserving Metasurface 利用偏振保持元表面上的耦合塔姆态调谐 Q 因子和完美吸收

IF 2.4 4区物理与天体物理

Photonics Pub Date : 2023-12-18 DOI: 10.3390/photonics10121391

N. V. Rudakova, Rashid G. Bikbaev, Larisa E. Tyryshkina, Stepan Ya. Vetrov, I. Timofeev

{"title":"Tuning Q-Factor and Perfect Absorption Using Coupled Tamm States on Polarization-Preserving Metasurface","authors":"N. V. Rudakova, Rashid G. Bikbaev, Larisa E. Tyryshkina, Stepan Ya. Vetrov, I. Timofeev","doi":"10.3390/photonics10121391","DOIUrl":"https://doi.org/10.3390/photonics10121391","url":null,"abstract":"The circular polarization of light flips its handedness after a conventional metallic mirror reflection. Therefore, a polarization-preserving metasurface is a crucially important element in a series of chiral photonic structures. They include tunable cholesteric LCs and anisotropic photonic crystals. Chiral structures are rich in interfacial localized modes including Tamm states. In this report, coupled modes formed as a result of the interaction between two chiral optical Tamm states or a chiral optical Tamm state and a chiral Tamm plasmon polariton are analytically and numerically investigated. It is shown that the effective control of coupled modes can be carried out by changing the pitch of the cholesteric and the angle between the optical axis of the cholesteric and the polarization-preserving anisotropic mirror. The influence of the metasurface period on the spectral characteristics of coupled modes is investigated. The possibility of realizing a bound state in the continuum of the Friedrich–Wintgen type, resulting from the destructive interference of coupled modes, which leads to the collapse of the resonance line corresponding to the chiral optical Tamm state, has been demonstrated.","PeriodicalId":20154,"journal":{"name":"Photonics","volume":"11 3","pages":""},"PeriodicalIF":2.4,"publicationDate":"2023-12-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139175974","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"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

Performance Evaluation of Maximum Ratio Combining Diversity Technology and Traditional System Based on Comprehensive Noise Analysis in Underwater Wireless Optical Communication 基于综合噪声分析的水下无线光通信中最大比率组合分集技术与传统系统的性能评估

IF 2.4 4区物理与天体物理

Photonics Pub Date : 2023-12-18 DOI: 10.3390/photonics10121388

Weidong Zhang, Lulu Wang, Xiaying Wu, Li Fei, Han Peng, Ke Wen, Yanli Zhao

{"title":"Performance Evaluation of Maximum Ratio Combining Diversity Technology and Traditional System Based on Comprehensive Noise Analysis in Underwater Wireless Optical Communication","authors":"Weidong Zhang, Lulu Wang, Xiaying Wu, Li Fei, Han Peng, Ke Wen, Yanli Zhao","doi":"10.3390/photonics10121388","DOIUrl":"https://doi.org/10.3390/photonics10121388","url":null,"abstract":"The maximum ratio combining (MRC) diversity technology has shown outstanding performance in overcoming the adverse effects of underwater wireless optical communication (UWOC) systems. However, its actual performance gain will be affected by the detection area and noise, which requires an in-depth analysis. In this paper, on the basis of fully considering the noises in the UWOC system, the performance of the MRC diversity technology is fairly and comprehensively studied by comparing it with two single-input–single-output (SISO) systems using a small aperture detection (SAD) scheme or a large-aperture detection (LAD) scheme through a Monte Carlo simulation and a formula analysis. The results show that the traditional belief that the MRC diversity scheme has consistently outperformed SISO systems may be misleading. When the thermal noise is dominant and the background noise is small, the LAD scheme performs better than the MRC diversity scheme with the same detection area. And in other cases, the MRC diversity scheme with the same detection area is always superior to the SISO systems. The conclusions obtained in this paper have a guiding significance for the practical application of UWOC.","PeriodicalId":20154,"journal":{"name":"Photonics","volume":"81 ","pages":""},"PeriodicalIF":2.4,"publicationDate":"2023-12-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139176292","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"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

X-Cut Lithium Niobate Optical Waveguide with High-Index Contrast and Low Loss Fabricated by Vapor Proton Exchange 利用蒸汽质子交换技术制造具有高对比度和低损耗的 X 切口铌酸锂光波导

IF 2.4 4区物理与天体物理

Photonics Pub Date : 2023-12-18 DOI: 10.3390/photonics10121390

Shicheng Rong, Xujie Wen, Ning Ding, Jia Liao, Pingrang Hua

{"title":"X-Cut Lithium Niobate Optical Waveguide with High-Index Contrast and Low Loss Fabricated by Vapor Proton Exchange","authors":"Shicheng Rong, Xujie Wen, Ning Ding, Jia Liao, Pingrang Hua","doi":"10.3390/photonics10121390","DOIUrl":"https://doi.org/10.3390/photonics10121390","url":null,"abstract":"Highly integrated and stable devices are appealing in optical communication and sensing. This appeal arises from the presence of high refractive index contrast and high-quality waveguides. In this study, we improved the vapor proton exchange (VPE) process, enabling large-scale waveguide fabrication and addressing the issue of liquid exchange during cooling. Additionally, we have prepared and characterized planar waveguides on X-cut lithium niobate (LN) crystals. The exchanged samples exhibit α and k1 phases, refractive index contrasts as high as 0.082, and exceptional refractive index uniformity. Furthermore, we utilized the same process to fabricate channel waveguides and Y-branch waveguides. We achieved low propagation losses in channel waveguides, accompanied by small mode sizes, and low-loss Y-branch waveguides with a highly uniform beam splitting ratio. All waveguides exhibited consistent performance across multiple preparations and tests, remaining free from aging effects for three months. Our results underscore the promising potential of VPE for creating Y-branch splitters and modulators in LN crystals.","PeriodicalId":20154,"journal":{"name":"Photonics","volume":"39 7","pages":""},"PeriodicalIF":2.4,"publicationDate":"2023-12-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139176106","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"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

NaYF4: Yb,Er Upconversion Nanoparticles for Imaging: Effect on Red Blood Cells 用于成像的 NaYF4：Yb,Er 上转换纳米粒子：对红细胞的影响

IF 2.4 4区物理与天体物理

Photonics Pub Date : 2023-12-17 DOI: 10.3390/photonics10121386

A. Doronkina, V. Kochubey, Anastasia V. Maksutova, A. Pravdin, A. M. Mylnikov, N. Navolokin, I. Yanina

{"title":"NaYF4: Yb,Er Upconversion Nanoparticles for Imaging: Effect on Red Blood Cells","authors":"A. Doronkina, V. Kochubey, Anastasia V. Maksutova, A. Pravdin, A. M. Mylnikov, N. Navolokin, I. Yanina","doi":"10.3390/photonics10121386","DOIUrl":"https://doi.org/10.3390/photonics10121386","url":null,"abstract":"(1) Background: Upconversion nanoparticles (UCNPs) are a promising tool for biological tissue structure visualization and photodynamic therapy (PDT). The luminescence of such NPs is excited in the spectrum’s near-infrared (NIR) region, while the NPs luminesce in the visible region. Conjugating such NPs with photodynamic dyes that absorb their luminescence makes it possible to increase the depth at which PDT is performed. (2) Methods: We conducted a comprehensive study on the possibility of using NaYF4:Er:Yb UCNPs in vivo for imaging and PDT. The NPs were synthesized by a hydrothermal method. The synthesis of NPs with a size of 80 nm and hexagonal structure was demonstrated. (3) Results: The accumulation of NPs in organs after their intravenous injection into rats was studied. The effect of NPs on the shape, size, and degree of aggregation of red blood cells (RBC) was also investigated. (4) Conclusions: The possibility of luminescent visualization of NPs in histological sections and their subcutaneous distribution is demonstrated. All investigated particles showed moderate toxicity, causing mostly reversible changes.","PeriodicalId":20154,"journal":{"name":"Photonics","volume":"22 32","pages":""},"PeriodicalIF":2.4,"publicationDate":"2023-12-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"138966208","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"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

Picosecond Pulse Tapered Fiber Amplifier Operated near 1030 nm with Peak Power up to 1 MW 工作波长接近 1030 nm、峰值功率高达 1 MW 的皮秒脉冲锥形光纤放大器

IF 2.4 4区物理与天体物理

Photonics Pub Date : 2023-12-16 DOI: 10.3390/photonics10121385

E. K. Mikhailov, K. Bobkov, A. Levchenko, V. Velmiskin, D.V. Khudyakov, S. Aleshkina, T.S. Zaushitsyna, M. Bubnov, D. Lipatov, M. Likhachev

引用次数: 0