Integrated optical vortex beam receivers

Çiçek, Kenan; Hu, Ziyang; Zhu, Jiangbo; Meriggi, Laura; Li, Shimao; Nong, Zhichao; Gao, Shengqian; Zhang, Ning; Wang, Xuyang; Cai, Xinlun; Sorel, Marc; Yu, Siyuan

doi:10.1364/oe.24.028529

Cited by 16 publications

(10 citation statements)

References 37 publications

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“…Spin-orbit controlled unidirectional coupling. Given the principle of reciprocity, this device can also be used for detection of AM components in an incident CVV beam 54 . The ring resonator supports the degenerate CW and CCW WGMs at each resonance wavelength λ 0 , and these two modes give rise to the emission of two CVVs of opposite TCs, i.e., l TC = ±( p q).…”

Section: Resultsmentioning

confidence: 99%

Spin-orbit interaction of light induced by transverse spin angular momentum engineering

et al. 2018

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The investigations on optical angular momenta and their interactions have broadened our knowledge of light’s behavior at sub-wavelength scales. Recent studies further unveil the extraordinary characteristics of transverse spin angular momentum in confined light fields and orbital angular momentum in optical vortices. Here we demonstrate a direct interaction between these two intrinsic quantities of light. By engineering the transverse spin in the evanescent wave of a whispering-gallery-mode-based optical vortex emitter, a spin-orbit interaction is observed in generated vortex beams. Inversely, this unconventional spin-orbit interplay further gives rise to an enhanced spin-direction locking effect in which waveguide modes are unidirectionally excited, with the directionality jointly controlled by the spin and orbital angular momenta states of light. The identification of this previously unknown pathway between the polarization and spatial degrees of freedom of light enriches the spin-orbit interaction phenomena, and can enable various functionalities in applications such as communications and quantum information processing.

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Section: Resultsmentioning

confidence: 99%

Spin-orbit interaction of light induced by transverse spin angular momentum engineering

et al. 2018

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“…The input optical signals from the two access waveguides can excite two different mode orders at the wavelength c λ , as the number of p is different for different transverse WGMs. Accounting for the fact that clockwise and anticlockwise modes that propagate in the micro-ring produce two states with equal but opposite mode orders [23], up to 4 vector OAM modes can be multiplexed. Rigorous theoretical derivation shows that the angular grating structure can be designed with low crosstalk between the different WGMs (see the supplementary materials in [14]).…”

Section: Designmentioning

confidence: 99%

“…2(d) and 2(e)). According to the principle of reciprocity, this device can also be used as a demultiplexer (DEMUX) that receives 4 specific OAM states and separates them into different waveguides according to their phase structures [23].…”

Section: Designmentioning

confidence: 99%

Orbital angular momentum vector modes (de)multiplexer based on multimode micro-ring

Nong

et al. 2018

Opt. Express

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Orbital angular momentum (OAM) multiplexing has emerged as an important method to increase the communication capacities in future optical information technologies. In this work, we demonstrate a silicon integrated OAM (de)multiplexer with a very simple structure. By simply tapping the evanescent wave of two different whispering gallery modes rotating inside a multimodal micro-ring resonator, four in-plane waveguide modes are converted to four free-space vector OAM beams with high mode purity. We further demonstrate chip-to-chip OAM multiplexing transmission using a pair of silicon devices, which shows low-level mode crosstalk and favorable link performance.

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“…Therefore the abilities to distinguish different OAM modes and diagnose the OAM spectrum are essential in an OAM-based optical system. Lots of schemes ranging from interferometry [22][23][24][25][26] to diffractometry [27][28][29][30][31][32][33][34][35][36][37][38][39] and then to integrated or meta-materials [39][40][41][42][43] have been proposed in the past few years to accomplish this goal, while they still have limitations in terms of the veracity, conciseness and universality. The early proposed approaches are mainly focusing on single OAM modes, appropriating for a beam that carries single OAM values, where the representative works contain interfering with plane wave [22,23] and designing specific diffraction gratings [27][28][29][30][31].…”

Section: Introductionmentioning

confidence: 99%

Universal orbital angular momentum spectrum analyzer for beams

Zhai

Zhang

et al. 2020

PhotoniX

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The orbital angular momentum (OAM) of beams provides a new dimension, and have already found lots of applications in various domains. Among such applications, the precisely and quantitatively diagnostic of intensity distributions among different OAM modes, namely the OAM spectrum of a beam, is of great significance. In this paper we propose and experimentally validate a simple interferential method to achieve this goal. By analyzing the interference pattern formed by the beam and a reference field, the OAM spectrum can be obtained instantaneously. Furthermore, the proposed method is also available for more complex light fields, for instance, the multi-ring optical vortices. In the proof-ofconcept experiment, the OAM spectra of both single-mode and N-fold multiplexed OAM modes with various intensity distributions are well detected. Our work offers a new way to precisely measure the OAM spectra of beams and will advance the development of many applications ranging from classical to quantum physics as the OAM based large-capacity data transmissions, rotation detection, quantum manipulation and so on.

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Integrated optical vortex beam receivers

Cited by 16 publications

References 37 publications

Spin-orbit interaction of light induced by transverse spin angular momentum engineering

Spin-orbit interaction of light induced by transverse spin angular momentum engineering

Orbital angular momentum vector modes (de)multiplexer based on multimode micro-ring

Universal orbital angular momentum spectrum analyzer for beams

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