Mode sorter designed for (de)multiplexing vector vortex modes

Jia, Junliang; Chang, Zehong; Yang, Hongzhe; Qing, Liu; Wang, Feiran; Gao, Hong; Li, Fuli; Zhang, Pei

doi:10.1364/ao.58.007094

Cited by 17 publications

(6 citation statements)

References 53 publications

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“…The device simplifies existed schemes for generation and builds a solid connection between simple scalar field on basic PS and sophisticated CVBs on HOPS. Extensively, states on hybrid order Poincaré sphere (HyOPS) [60,61] can be implemented with the help of Q-plate which provides a shift of ℓ index of CVB [32]. The device supplements a convenient operation for quantum information and communications experiment [62][63][64], taking effects on the polarization-selective mode index inversion.…”

Section: Discussionmentioning

confidence: 99%

“…These peculiar properties are useful for many applications such as particle manipulation [14][15][16][17][18], microscopy [19][20][21], material processing [22][23][24], near-field optics [25], and nonlinear optics [26]. Recently, the degrees of freedom of CVB are extended by ray-like trajectories [27], so that CVB also presents growing potentials in the area of optical encoding [28] and optical communications [29][30][31][32].…”

Section: Introductionmentioning

confidence: 99%

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Arbitrary cylindrical vector beam generation enabled by polarization-selective Gouy phase shifter

Jia,

Zhang,

et al. 2021

Preprint

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Cylindrical vector beams (CVBs), which possesses polarization distribution of rotational symmetry on the transverse plane, can be developed in many optical technologies. Conventional methods to generate CVBs contain redundant interferometers or need to switch among diverse elements, thus being inconvenient in applications containing multiple CVBs.Here we provide a passive polarization-selective device to substitute interferometers and simplify generation setup. It is accomplished by reversing topological charges of orbital angular momentum based on polarization-selective Gouy phase. In the process, tunable input light is the only condition to generate CVB with arbitrary topological charges. To cover both azimuthal and radial parameters of CVBs, we express the mapping between scalar Laguerre-Gaussian light on basic Poincaré sphere and CVB on high-order Poincaré sphere. The proposed device simplifies the generation of CVBs enormously, and thus has potentials in integrated devices for both quantum and classic optical experiments.

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Section: Discussionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Arbitrary cylindrical vector beam generation enabled by polarization-selective Gouy phase shifter

Jia,

Zhang,

et al. 2021

Preprint

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“…OAM mode sorters have been implemented using several techniques, such as with the use of spatial light modulators, ,− q-plates, , geometrical transformations, log-polar coordinate transformations, , spiral transformations, , multiplane converters, − and Porro prisms . There are also free-space interferometric-based schemes that perform OAM mode sorting by applying relative phases related to the topological charge scriptl of the incoming modes using dove prisms. − All of these systems are based on performing operations on the OAM modes using bulk optics, which makes their integration into current telecommunication networks difficult.…”

Section: Introductionmentioning

confidence: 99%

All-in-Fiber Dynamically Reconfigurable Orbital Angular Momentum Mode Sorting

Alarcón,

Gómez,

Spegel-Lexne

et al. 2023

ACS Photonics

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The orbital angular momentum (OAM) spatial degree of freedom of light has been widely explored in many applications, including telecommunications, quantum information, and light-based micromanipulation. The ability to separate and distinguish between the different transverse spatial modes is called mode sorting or mode demultiplexing, and it is essential to recover the encoded information in such applications. An ideal d mode sorter should be able to faithfully distinguish between the different d spatial modes, with minimal losses, and have d outputs and fast response times. All previous mode sorters rely on bulk optical elements, such as spatial light modulators, which cannot be quickly tuned and have additional losses if they are to be integrated with optical fiber systems. Here, we propose and experimentally demonstrate, to the best of our knowledge, the first all-in-fiber method for OAM mode sorting with ultrafast dynamic reconfigurability. Our scheme first decomposes the OAM mode in-fiber-optical linearly polarized (LP) modes and then interferometrically recombines them to determine the topological charge, thus correctly sorting the OAM mode. In addition, our setup can also be used to perform ultrafast routing of the OAM modes. These results show a novel and fiber-integrated form of optical spatial mode sorting that can be readily used for many new applications in classical and quantum information processing.

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“…While laser beams typically have homogeneous polarization profiles, recent years have seen an increasing interest in light designed with spatially varying polarization structures, including vector vortex beams [1][2][3][4][5], Poincaré beams [6][7][8] and even skyrmionic beams [9,10]. These vector beams are characterized by non-separable correlations between their polarization and spatial degree of freedom [11,12], with intriguing applications for quantum [13][14][15][16] and quantum inspired protocols [17][18][19][20][21][22][23].…”

Section: Introductionmentioning

confidence: 99%

Single-shot characterization of vector beams by generalized measurements

Khafaji,

Cisowski,

Jimbrown

et al. 2022

Preprint

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Vector vortex beams, featuring independent spatial modes in orthogonal polarization components, offer an increase in information density for emerging applications in both classical and quantum communication technology. Recent advances in optical instrumentation have led to the ability of generating and manipulating such beams. Their tomography is generally accomplished by projection measurements to identify polarization as well as spatial modes. In this paper we demonstrate spatially resolved generalized measurements of arbitrary vector vortex beams. We perform positive operator valued measurements (POVMs) in an interferometric setup that characterizes the vector light mode in a single-shot. This offers superior data acquisition speed compared to conventional Stokes tomography techniques, with potential benefits for communication protocols as well as dynamic polarization microscopy of materials.

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Mode sorter designed for (de)multiplexing vector vortex modes

Cited by 17 publications

References 53 publications

Arbitrary cylindrical vector beam generation enabled by polarization-selective Gouy phase shifter

Arbitrary cylindrical vector beam generation enabled by polarization-selective Gouy phase shifter

All-in-Fiber Dynamically Reconfigurable Orbital Angular Momentum Mode Sorting

Single-shot characterization of vector beams by generalized measurements

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