Results 31 to 40 of about 1,464 (216)
A coaxially integrated photonic orbital angular momentum beam multiplexer [PDF]
2016 IEEE 13th International Conference on Group IV Photonics (GFP), 2016 We demonstrate an integrated photonic orbital angular momentum beam multiplexer consisting of four nested arc waveguide gratings. Well-defined OAM mode emissions over wide bandwidth of 1-nm enables simultaneous wavelength division multiplexing and OAM multiplexing.
Xiao, Qingsheng +8 more
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High-speed acoustic communication by multiplexing orbital angular momentum [PDF]
Proceedings of the National Academy of Sciences, 2017 Significance Acoustic communication is critical for underwater application such as deep-ocean scientific explorations and off-shore industrial controls. This is because other techniques using electromagnetic waves are difficult for underwater applications due to the strong absorption of water. Optical communication, on the other hand, suffers
Shi, Chengzhi +3 more
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Multiplexing heralded single photons in orbital-angular-momentum space [PDF]
Physical Review A, 2019 Heralded single-photon source (HSPS) with competitive single photon purity and indistinguishability has become an essential resource for photonic quantum information processing. Here, for the first time, we proposed a theoretical regime to enhance heralded single-photons generation by multiplexing the degree of the freedom of orbital angular momentum ...
Shi-long Liu +9 more
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Photonic lantern broadband orbital angular momentum mode multiplexer
Optics Express, 2018 Optical vortex beams that carry orbital angular momentum (OAM), also known as OAM modes, have attracted considerable interest in recent years as they can comprise an additional degree of freedom for a variety of advanced classical and quantum optical applications.
Eznaveh, Z. S. +10 more
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Active multiband varifocal metalenses based on orbital angular momentum division multiplexing
Nature Communications, 2022 A dielectric metalens consisting of ultrahigh aspect ratio TiO2 nanofins array is demonstrated to realize active multiband varifocal functionality. By regulating the orbital angular momentum, the focal length can be switched from 5 mm to 35 mm with large
Ruixuan Zheng +7 more
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Tongxin xuebao, 2020 In order to mitigate the crosstalk caused by oceanic turbulence in the underwater wireless orbital angular momentum multiplexing optical communication system, the application of space-time coding technology in the system was studied.Based on Rytov ...
Xiaoli YIN +3 more
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Pancharatnam–Berry Optical Elements for Spin and Orbital Angular Momentum Division Demultiplexing
Photonics, 2018 A Pancharatnam⁻Berry optical element is designed, fabricated, and optically characterized for the demultiplexing of beams with different polarization and orbital angular momentum states at the telecom wavelength of 1310 nm.
Gianluca Ruffato +4 more
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Applied Sciences, 2018 In this paper, we experimentally investigate the turbulence mitigation methods in free-space optical communication systems based on orbital angular momentum (OAM) multiplexing.
Zhen Qu, Ivan B. Djordjevic
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High-Security OFDM-OAM Optical Transmission Scheme Based on Quad-Wing Ultra-Chaotic Encryption
IEEE Photonics Journal, 2023 We propose a high-security hyperchaotic orthogonal frequency division multiplexing (OFDM) encryption scheme based on the orbital angular momentum system, and our research focuses on the security and high-order modulation of the orbital angular momentum ...
Hao Wang +6 more
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Opto-Electronic Advances, 2022 Herein, an attention-grabbing and up-to-date review related to major multiplexing techniques is presented which includes wavelength division multiplexing (WDM), polarization division multiplexing (PDM), space division multiplexing (SDM), mode division ...
Svetlana Nikolaevna Khonina +3 more
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