Integrated emitters for optical vortices with a “cobweb” structure

Wang, Yu; Zhao, Peng; Feng, Xue; Cui, Kaiyu; Huang, Yidong

doi:10.1109/oecc.2015.7340285

Cited by 2 publications

(2 citation statements)

References 9 publications

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“…Following the above discussion as well as our previous work 18 19 , a tunable OAM emitter is proposed and demonstrated in this work. As schematically shown in Fig.…”

Section: Resultsmentioning

confidence: 73%

“…More recently, as a combination of silicon photonics and OAM, integrated emitters have been actively investigated, showing inspiring superiorities of being compact and enabling dynamic switching 15 16 17 18 19 20 21 22 23 24 . Among the previous proposals, generating OAM modes has been mainly based on the micro-ring cavities 15 16 18 19 20 by utilizing the phase gradient of the fundamental whispering gallery mode (WGM). And the dynamic switching between different OAM modes could be achieved through thermo-optic effect and plasma-dispersion effect 18 23 25 .…”

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confidence: 99%

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Integrated photonic emitter with a wide switching range of orbital angular momentum modes

Wang

Zhao

Feng

et al. 2016

Sci Rep

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Due to the nature of infinite dimensionality, the orbital angular momentum (OAM) has been considered as a new degree of freedom of light and widely expanded the scopes of substantial optical applications such as optical telecommunication, quantum information, particle manipulation and imaging. In recent years, the integrated photonic OAM emitters have been actively investigated due to both compactness and tunability. Essentially, the number of available OAM modes by dynamic switching should be large enough so that the dimensionality of OAM could be explored as much as possible. In this work, an integrated photonic emitter with a wide switching range of OAM modes is theoretically developed, numerically simulated, and experimentally verified. The independence of the micro-ring cavity and the scattering unit provides the flexibility to design the device and optimize the performance. Specifically, the dynamic switching of nine OAM modes (l = −4 ~ 4) with azimuthal polarization has been demonstrated by electrically controlled thermo-optic effect.

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“…Following the above discussion as well as our previous work 18 19 , a tunable OAM emitter is proposed and demonstrated in this work. As schematically shown in Fig.…”

Section: Resultsmentioning

confidence: 73%

mentioning

confidence: 99%

Integrated photonic emitter with a wide switching range of orbital angular momentum modes

Wang

Zhao

Feng

et al. 2016

Sci Rep

Self Cite

View full text Add to dashboard Cite

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A Theoretical Description of Integrated OAM Beam Emitters Using Conical Wave Model

et al. 2022

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A theoretical model, suitable for multiple structures of integrated vortex beam emitters, is proposed, developed and verified. Using the interference superposition of multiple plane waves in the far-field plane, which have the same wavevector in the z-direction, the expressions of the orbital angular momentum (OAM) beam field emitted from integrated devices are obtained. The results are applicable to OAM beams with larger or fractional topological charges, and consider different initial polarization states, which means different structures. Especially, when ϑ = 0, p = 0, the result is the same as those derived from the dipole model and is consistent with the previous experimental results. The calculated results show that it can obtain more accurate far-field light field with topological charge l increasing gradually and gain the same Ex and Ey with different initial polarization states. By constructing this model, the generation mechanism of the integrated OAM beam emitters can be easily understood and the beam vortex can be generated naturally and flexibly.

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Integrated emitters for optical vortices with a “cobweb” structure

Cited by 2 publications

References 9 publications

Integrated photonic emitter with a wide switching range of orbital angular momentum modes

Integrated photonic emitter with a wide switching range of orbital angular momentum modes

A Theoretical Description of Integrated OAM Beam Emitters Using Conical Wave Model

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