Cylindrical vector beams demultiplexing communication based on a vectorial diffractive optical element

Cao, Mengwei; Xie, Zhenwei; Zhong, Yanan; Lei, Ting; Zhang, Wanlong; Liu, Shutian; Yuan, Xiaocong

doi:10.1515/nanoph-2023-0009

Cited by 13 publications

(2 citation statements)

References 57 publications

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“…CVBs possess significant multiplexing and demultiplexing potential due to their unlimited topological charges 36 – 38 . Building upon the vectorial-mode parity Hall effect, we introduce an efficient scheme that enables the separation of both the parities and topological charges of the CVBs, thereby significantly expanding the potential for multi-channel and multi-function applications.…”

Section: Resultsmentioning

confidence: 99%

Optical vectorial-mode parity Hall effect: a case study with cylindrical vector beams

Zhou,

Liang,

Xie

et al. 2024

Nat Commun

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The vectorial optical field (VOF) assumes a pivotal role in light-matter interactions. Beyond its inherent polarization topology, the VOF also encompasses an intrinsic degree of freedom associated with parity (even or odd), corresponding to a pair of degenerate orthogonal modes. However, previous research has not delved into the simultaneous manipulation of both even and odd parities. In this study, we introduce and validate the previously unexplored parity Hall effect for vectorial modes using a metasurface design. Our focus lies on a cylindrical vector beam (CVB) as a representative case. Through the tailored metasurface, we effectively separate two degenerate CVBs with distinct parities in divergent directions, akin to the observed spin states split in the spin Hall effect. Additionally, we provide experimental evidence showcasing the capabilities of this effect in multi-order CVB demultiplexing and parity-demultiplexed CVB-encoded holography. This effect unveils promising opportunities for various applications, including optical communication and imaging.

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Section: Resultsmentioning

confidence: 99%

Optical vectorial-mode parity Hall effect: a case study with cylindrical vector beams

Zhou,

Liang,

Xie

et al. 2024

Nat Commun

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“…The orthogonal modes present in few-mode fibers (FMFs) introduce a new dimension with diverse applications, widely exploited in communication, sensing, 1,2 and optical field manipulation. [3][4][5] Unlike single-mode fibers (SMFs), FMFs accommodate multiple transverse modes due to their larger core size and higher refractive index difference. These modes ideally remain isolated from power cross talk, serving as independent and intrinsic channels for information transmission.…”

Section: Introductionmentioning

confidence: 99%

Ultra-low-loss all-fiber orbital angular momentum mode-division multiplexer based on cascaded fused-biconical mode selective couplers

Guo,

Liu,

Chen

et al. 2024

Adv. Photon. Nexus

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.Mode-division multiplexers (MDMUXs) play a pivotal role in enabling the manipulation of an arbitrary optical state within few-mode fibers, offering extensive utility in the fields of mode-division multiplexing and structured optical field engineering. The exploration of MDMUXs employing cascaded resonant couplers has garnered significant attention owing to their scalability, exceptional integration capabilities, and the anticipated low insertion loss. In this work, we present the successful realization of high-quality orbital angular momentum MDMUX corresponding to topological charges 0, ±1, and ±2, achieved through the utilization of cascaded fused-biconical tapered couplers. Notably, the measured insertion losses at 1550 nm exhibit remarkable minimal values: 0.31, 0.10, and 0.64 dB, respectively. Furthermore, the 80% efficiency bandwidths exceed 106, 174, and 174 nm for these respective modes. The MDMUX is composed of precision-manufactured high-quality mode selective couplers (MSCs). Utilizing a proposed supermode propagation method based on mode composition analysis, we precisely describe the operational characteristics of MSCs. Building upon this comprehensive understanding, we embark on a pioneering analysis elucidating the influence of MSC cascading order on the performance of MDMUXs. Our theoretical investigation substantiates that when constructing MDMUXs, MSCs should adhere to a specific cascading sequence.

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High‐Fidelity Information Transmission Through the Turbulent Atmosphere Utilizing Partially Coherent Cylindrical Vector Beams

Yao,

Zhang,

Yuan

et al. 2024

Advanced Photonics Research

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As the demand for high‐capacity and high‐fidelity communication systems continues to increase, addressing the challenges posed by noise and atmospheric turbulence disturbances is imperative. This study introduces and experimentally implements a novel free‐space optical communication protocol. This protocol combines the advantages of reducing the spatial coherence of light at the source with the capabilities of convolutional neural networks at the receiver to encode and transmit optical images through a noisy link. Light beams that are robust against noise are generated and atmospheric turbulence is modeled in a laboratory setting by decreasing the degree of spatial coherence of the source. Eight orbital angular momentum states, four polarizations, and eight coherence states of a light source that generates partially coherent cylindrical vector beams are utilized. These elements are employed to achieve a 256‐ary encoding/decoding data transmission within our protocol. This study is expected to catalyze further research into the utilization of partially coherent light and neural networks in the realm of free‐space optical communications.

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Cylindrical vector beams demultiplexing communication based on a vectorial diffractive optical element

Cited by 13 publications

References 57 publications

Optical vectorial-mode parity Hall effect: a case study with cylindrical vector beams

Optical vectorial-mode parity Hall effect: a case study with cylindrical vector beams

Ultra-low-loss all-fiber orbital angular momentum mode-division multiplexer based on cascaded fused-biconical mode selective couplers

High‐Fidelity Information Transmission Through the Turbulent Atmosphere Utilizing Partially Coherent Cylindrical Vector Beams

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