Results 11 to 20 of about 113,143 (287)

Direct fiber vector eigenmode multiplexing transmission seeded by integrated optical vortex emitters [PDF]

Light: Science and Applications, 2017
Spatial modes have received substantial attention over the last decades and are used in optical communication applications. In fiber-optic communications, the employed linearly polarized modes and phase vortex modes carrying orbital angular momentum can ...
Cai, Xin-Lun, Chen, Shi, Du, Cheng, Klitis, Charalambos, Li, Shi-Mao, Liu, Jun, Mo, Qi, Sorel, Marc, Wang, An-Dong, Wang, Jian, Yu, Si-Yuan, Zhu, Long   +11 more
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Recent advances on optical vortex generation

Nanophotonics, 2018
This article reviews recent progress leading to the generation of optical vortex beams. After introducing the basics of optical vortex beams and their promising applications, we summarized different approaches for optical vortex generation by discrete ...
Wang Xuewen, Nie Zhongquan, Liang Yao, Wang Jian, Li Tao, Jia Baohua   +5 more
doaj   +2 more sources

Integrated optical vortex microcomb

Nature Photonics
The explorations of physical degrees of freedom with infinite dimensionalities, such as orbital angular momentum and frequency of light, have profoundly reshaped the landscape of modern optics with representative photonic functional devices including optical vortex emitters and frequency combs.
Bo Chen, Yueguang Zhou, Yang Liu, Chaochao Ye, Qian Cao, Peinian Huang, Chanju Kim, Yi Zheng, Leif Katsuo Oxenløwe, Kresten Yvind, Jin Li, Jiaqi Li, Yanfeng Zhang, Chunhua Dong, Songnian Fu, Qiwen Zhan, Xuehua Wang, Minhao Pu, Jin Liu   +18 more
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Subpixel localization of optical vortices using artificial neural networks [PDF]

Metrology and Measurement Systems, 2021
Optical vortices are getting attention in modern optical metrology. Because of their unique features, they can be used as precise position markers. In this paper, we show that an artificial neural network can be used to improve vortex localization.
Agnieszka Popiołek-Masajada, Ewa Frączek, Emilia Burnecka   +2 more
doaj   +1 more source

Entangled Optical Vortex Links [PDF]

Physical Review Letters, 2011
Optical vortices are lines of phase singularity which percolate through all optical fields. We report the entanglement of linked optical vortex loops in the light produced by spontaneous parametric down-conversion. As measured by using a Bell inequality, this entanglement between topological features extends over macroscopic and finite volumes.
Romero, J., Leach, J., Jack, B., Dennis, M. R., Franke-Arnold, S., Barnett, S. M., Padgett, M. J.   +6 more
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Optical Vortex Brillouin Laser

Laser & Photonics Reviews, 2023
AbstractOptical vortices, which have been extensively studied over the last decades, offer an additional degree of freedom useful in many applications, such as optical tweezers and quantum control. Stimulated Brillouin scattering (SBS), providing a narrow linewidth and a strong nonlinear response, has been used to realize quasi‐continuous wave lasers ...
Zeng, X., Russell, P., Chen, Y., Wang, Z., Wong, G., Roth, P., Frosz, M., Stiller, B.   +7 more
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Theoretical Study on Generation of Multidimensional Focused and Vector Vortex Beams via All-Dielectric Spin-Multiplexed Metasurface

Nanomaterials, 2022
The optical vortex (OV) beams characterized by orbital angular momentum (OAM) possess ubiquitous applications in optical communication and nanoparticle manipulation.
Yue Liu, Li Chen, Chengxin Zhou, Kuangling Guo, Xiaoyi Wang, Yuhan Hong, Xiangbo Yang, Zhongchao Wei, Hongzhan Liu   +8 more
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Real-time phase measurement of optical vortex via digital holography

Frontiers in Physics, 2023
Real-time phase measurement is of great value to study the evolution of optical vortex. However, it cannot be recorded in real time due to the limitation of the exposure time of the recording device in the experiment. Therefore, based on the temporal and
Huaibin Qiu, Xiaosong Liu, Kaiqing Wang, Jiazhen Dou, Jianglei Di, Yuwen Qin   +5 more
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Abrupt autofocusing performance of a circular Airyprime beam with vortex pairs

Results in Physics, 2023
Abrupt autofocusing performance of a circular Airyprime beam (CAPB) with vortex pairs propagating in free space is investigated. Here the vortex pairs are off-axis by default.
Wen-Song Dan, Jian He, Xiang Zang, Fei Wang, Yi-Min Zhou, Xiu-Xiang Chu, Guo-Quan Zhou   +6 more
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Nonlinear optical vortex coronagraph

Optics Letters, 2020
A nonlinear optical vortex coronagraph (n-OVC) based on sum-frequency generation (SFG) in a periodically poled lithium niobate (PPLN) crystal is presented. We demonstrate an n-OVC by mixing the image of an on-axis point source ( λ s = 1.6 µ m ) inside the PPLN crystal with a pump beam (
Einstom Engay, Peter John Rodrigo
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