The Experts below are selected from a list of 23190 Experts worldwide ranked by ideXlab platform

Xiaocong Yuan - One of the best experts on this subject based on the ideXlab platform.

  • high resolution cylindrical vector beams sorting based on spin dependent fan out optical Geometric Transformation
    Optics Express, 2019
    Co-Authors: Ting Lei, Juncheng Fang, Zhenwei Xie, Xiaocong Yuan
    Abstract:

    With growing data demands, the capacity of the single-mode fiber will reach its limit. Cylindrical vector beams (CVBs) as the eigenmodes of fiber have been demonstrated to increase the capacity in multiplexing optical communication. As a key component of CVB multiplexing, the sorter based on spin-dependent optical Geometric Transformation has the advantages of high efficiency and a large channel number. However, the demonstrated spatial resolution of the CVB sorter was not sufficient to separate the adjacent CVB orders. Therefore, there were still serious crosstalk issues for the CVB multiplexing channels. Here, we propose and demonstrate the high-resolution CVBs sorting by introducing fan-out structures in the spin-dependent optical Geometric Transformation. The crosstalk among the CVBs are suppressed compared with the original design. In addition, a cylindrical lens is used to modify the output beams to Gaussian shape. We experimentally demonstrate the sorting of 4 coaxial CVB channels to standard multimode fiber array. In the numerical modeling, we also design the CVB sorter for free space to integrated waveguide array demultiplexing.

  • spin dependent optical Geometric Transformation for cylindrical vector beam multiplexing communication
    ACS Photonics, 2018
    Co-Authors: Juncheng Fang, Zhenwei Xie, Ting Lei, Changjun Min, Xiaocong Yuan
    Abstract:

    Given by the Shannon theorem, the data rate in a single mode fiber is approaching the capacity limit of 100 Tbit/s, which even applies to all existing wavelength division multiplexing and advanced modulation formatting techniques. Optical vortex beams, including orbital angular momentum (OAM) beams with phase singularities and cylindrical vector beams (CVBs) with polarization singularities, are orthogonally structured light beams providing new degrees of freedom for multiplexing optical communication, for which the multiplexer is the key component. Although there are various OAM detection approaches such as the optical Geometric Transformation and vortex grating, CVB sorting with high efficiency and large dynamic range has not been demonstrated before. In this work, we propose and demonstrate an efficient approach for multiple coaxial CVB sorting based on the spin-dependent optical Geometric Transformation using the Pancharatnam–Berry optical element device fabricated with the photoaligned liquid crystal....

  • Spin-Dependent Optical Geometric Transformation for Cylindrical Vector Beam Multiplexing Communication
    2018
    Co-Authors: Juncheng Fang, Zhenwei Xie, Ting Lei, Changjun Min, Xiaocong Yuan
    Abstract:

    Given by the Shannon theorem, the data rate in a single mode fiber is approaching the capacity limit of 100 Tbit/s, which even applies to all existing wavelength division multiplexing and advanced modulation formatting techniques. Optical vortex beams, including orbital angular momentum (OAM) beams with phase singularities and cylindrical vector beams (CVBs) with polarization singularities, are orthogonally structured light beams providing new degrees of freedom for multiplexing optical communication, for which the multiplexer is the key component. Although there are various OAM detection approaches such as the optical Geometric Transformation and vortex grating, CVB sorting with high efficiency and large dynamic range has not been demonstrated before. In this work, we propose and demonstrate an efficient approach for multiple coaxial CVB sorting based on the spin-dependent optical Geometric Transformation using the Pancharatnam–Berry optical element device fabricated with the photoaligned liquid crystal. We demonstrate a CVB multiplexing communication system in both free space and few-mode optical fiber. The CVB sorter is compatible with wavelength division multiplexing and shows the potential to further increase the communication capacity by 1–2 orders of magnitude

Ting Lei - One of the best experts on this subject based on the ideXlab platform.

  • high resolution cylindrical vector beams sorting based on spin dependent fan out optical Geometric Transformation
    Optics Express, 2019
    Co-Authors: Ting Lei, Juncheng Fang, Zhenwei Xie, Xiaocong Yuan
    Abstract:

    With growing data demands, the capacity of the single-mode fiber will reach its limit. Cylindrical vector beams (CVBs) as the eigenmodes of fiber have been demonstrated to increase the capacity in multiplexing optical communication. As a key component of CVB multiplexing, the sorter based on spin-dependent optical Geometric Transformation has the advantages of high efficiency and a large channel number. However, the demonstrated spatial resolution of the CVB sorter was not sufficient to separate the adjacent CVB orders. Therefore, there were still serious crosstalk issues for the CVB multiplexing channels. Here, we propose and demonstrate the high-resolution CVBs sorting by introducing fan-out structures in the spin-dependent optical Geometric Transformation. The crosstalk among the CVBs are suppressed compared with the original design. In addition, a cylindrical lens is used to modify the output beams to Gaussian shape. We experimentally demonstrate the sorting of 4 coaxial CVB channels to standard multimode fiber array. In the numerical modeling, we also design the CVB sorter for free space to integrated waveguide array demultiplexing.

  • spin dependent optical Geometric Transformation for cylindrical vector beam multiplexing communication
    ACS Photonics, 2018
    Co-Authors: Juncheng Fang, Zhenwei Xie, Ting Lei, Changjun Min, Xiaocong Yuan
    Abstract:

    Given by the Shannon theorem, the data rate in a single mode fiber is approaching the capacity limit of 100 Tbit/s, which even applies to all existing wavelength division multiplexing and advanced modulation formatting techniques. Optical vortex beams, including orbital angular momentum (OAM) beams with phase singularities and cylindrical vector beams (CVBs) with polarization singularities, are orthogonally structured light beams providing new degrees of freedom for multiplexing optical communication, for which the multiplexer is the key component. Although there are various OAM detection approaches such as the optical Geometric Transformation and vortex grating, CVB sorting with high efficiency and large dynamic range has not been demonstrated before. In this work, we propose and demonstrate an efficient approach for multiple coaxial CVB sorting based on the spin-dependent optical Geometric Transformation using the Pancharatnam–Berry optical element device fabricated with the photoaligned liquid crystal....

  • Spin-Dependent Optical Geometric Transformation for Cylindrical Vector Beam Multiplexing Communication
    2018
    Co-Authors: Juncheng Fang, Zhenwei Xie, Ting Lei, Changjun Min, Xiaocong Yuan
    Abstract:

    Given by the Shannon theorem, the data rate in a single mode fiber is approaching the capacity limit of 100 Tbit/s, which even applies to all existing wavelength division multiplexing and advanced modulation formatting techniques. Optical vortex beams, including orbital angular momentum (OAM) beams with phase singularities and cylindrical vector beams (CVBs) with polarization singularities, are orthogonally structured light beams providing new degrees of freedom for multiplexing optical communication, for which the multiplexer is the key component. Although there are various OAM detection approaches such as the optical Geometric Transformation and vortex grating, CVB sorting with high efficiency and large dynamic range has not been demonstrated before. In this work, we propose and demonstrate an efficient approach for multiple coaxial CVB sorting based on the spin-dependent optical Geometric Transformation using the Pancharatnam–Berry optical element device fabricated with the photoaligned liquid crystal. We demonstrate a CVB multiplexing communication system in both free space and few-mode optical fiber. The CVB sorter is compatible with wavelength division multiplexing and shows the potential to further increase the communication capacity by 1–2 orders of magnitude

Zhenwei Xie - One of the best experts on this subject based on the ideXlab platform.

  • high resolution cylindrical vector beams sorting based on spin dependent fan out optical Geometric Transformation
    Optics Express, 2019
    Co-Authors: Ting Lei, Juncheng Fang, Zhenwei Xie, Xiaocong Yuan
    Abstract:

    With growing data demands, the capacity of the single-mode fiber will reach its limit. Cylindrical vector beams (CVBs) as the eigenmodes of fiber have been demonstrated to increase the capacity in multiplexing optical communication. As a key component of CVB multiplexing, the sorter based on spin-dependent optical Geometric Transformation has the advantages of high efficiency and a large channel number. However, the demonstrated spatial resolution of the CVB sorter was not sufficient to separate the adjacent CVB orders. Therefore, there were still serious crosstalk issues for the CVB multiplexing channels. Here, we propose and demonstrate the high-resolution CVBs sorting by introducing fan-out structures in the spin-dependent optical Geometric Transformation. The crosstalk among the CVBs are suppressed compared with the original design. In addition, a cylindrical lens is used to modify the output beams to Gaussian shape. We experimentally demonstrate the sorting of 4 coaxial CVB channels to standard multimode fiber array. In the numerical modeling, we also design the CVB sorter for free space to integrated waveguide array demultiplexing.

  • spin dependent optical Geometric Transformation for cylindrical vector beam multiplexing communication
    ACS Photonics, 2018
    Co-Authors: Juncheng Fang, Zhenwei Xie, Ting Lei, Changjun Min, Xiaocong Yuan
    Abstract:

    Given by the Shannon theorem, the data rate in a single mode fiber is approaching the capacity limit of 100 Tbit/s, which even applies to all existing wavelength division multiplexing and advanced modulation formatting techniques. Optical vortex beams, including orbital angular momentum (OAM) beams with phase singularities and cylindrical vector beams (CVBs) with polarization singularities, are orthogonally structured light beams providing new degrees of freedom for multiplexing optical communication, for which the multiplexer is the key component. Although there are various OAM detection approaches such as the optical Geometric Transformation and vortex grating, CVB sorting with high efficiency and large dynamic range has not been demonstrated before. In this work, we propose and demonstrate an efficient approach for multiple coaxial CVB sorting based on the spin-dependent optical Geometric Transformation using the Pancharatnam–Berry optical element device fabricated with the photoaligned liquid crystal....

  • Spin-Dependent Optical Geometric Transformation for Cylindrical Vector Beam Multiplexing Communication
    2018
    Co-Authors: Juncheng Fang, Zhenwei Xie, Ting Lei, Changjun Min, Xiaocong Yuan
    Abstract:

    Given by the Shannon theorem, the data rate in a single mode fiber is approaching the capacity limit of 100 Tbit/s, which even applies to all existing wavelength division multiplexing and advanced modulation formatting techniques. Optical vortex beams, including orbital angular momentum (OAM) beams with phase singularities and cylindrical vector beams (CVBs) with polarization singularities, are orthogonally structured light beams providing new degrees of freedom for multiplexing optical communication, for which the multiplexer is the key component. Although there are various OAM detection approaches such as the optical Geometric Transformation and vortex grating, CVB sorting with high efficiency and large dynamic range has not been demonstrated before. In this work, we propose and demonstrate an efficient approach for multiple coaxial CVB sorting based on the spin-dependent optical Geometric Transformation using the Pancharatnam–Berry optical element device fabricated with the photoaligned liquid crystal. We demonstrate a CVB multiplexing communication system in both free space and few-mode optical fiber. The CVB sorter is compatible with wavelength division multiplexing and shows the potential to further increase the communication capacity by 1–2 orders of magnitude

Juncheng Fang - One of the best experts on this subject based on the ideXlab platform.

  • high resolution cylindrical vector beams sorting based on spin dependent fan out optical Geometric Transformation
    Optics Express, 2019
    Co-Authors: Ting Lei, Juncheng Fang, Zhenwei Xie, Xiaocong Yuan
    Abstract:

    With growing data demands, the capacity of the single-mode fiber will reach its limit. Cylindrical vector beams (CVBs) as the eigenmodes of fiber have been demonstrated to increase the capacity in multiplexing optical communication. As a key component of CVB multiplexing, the sorter based on spin-dependent optical Geometric Transformation has the advantages of high efficiency and a large channel number. However, the demonstrated spatial resolution of the CVB sorter was not sufficient to separate the adjacent CVB orders. Therefore, there were still serious crosstalk issues for the CVB multiplexing channels. Here, we propose and demonstrate the high-resolution CVBs sorting by introducing fan-out structures in the spin-dependent optical Geometric Transformation. The crosstalk among the CVBs are suppressed compared with the original design. In addition, a cylindrical lens is used to modify the output beams to Gaussian shape. We experimentally demonstrate the sorting of 4 coaxial CVB channels to standard multimode fiber array. In the numerical modeling, we also design the CVB sorter for free space to integrated waveguide array demultiplexing.

  • spin dependent optical Geometric Transformation for cylindrical vector beam multiplexing communication
    ACS Photonics, 2018
    Co-Authors: Juncheng Fang, Zhenwei Xie, Ting Lei, Changjun Min, Xiaocong Yuan
    Abstract:

    Given by the Shannon theorem, the data rate in a single mode fiber is approaching the capacity limit of 100 Tbit/s, which even applies to all existing wavelength division multiplexing and advanced modulation formatting techniques. Optical vortex beams, including orbital angular momentum (OAM) beams with phase singularities and cylindrical vector beams (CVBs) with polarization singularities, are orthogonally structured light beams providing new degrees of freedom for multiplexing optical communication, for which the multiplexer is the key component. Although there are various OAM detection approaches such as the optical Geometric Transformation and vortex grating, CVB sorting with high efficiency and large dynamic range has not been demonstrated before. In this work, we propose and demonstrate an efficient approach for multiple coaxial CVB sorting based on the spin-dependent optical Geometric Transformation using the Pancharatnam–Berry optical element device fabricated with the photoaligned liquid crystal....

  • Spin-Dependent Optical Geometric Transformation for Cylindrical Vector Beam Multiplexing Communication
    2018
    Co-Authors: Juncheng Fang, Zhenwei Xie, Ting Lei, Changjun Min, Xiaocong Yuan
    Abstract:

    Given by the Shannon theorem, the data rate in a single mode fiber is approaching the capacity limit of 100 Tbit/s, which even applies to all existing wavelength division multiplexing and advanced modulation formatting techniques. Optical vortex beams, including orbital angular momentum (OAM) beams with phase singularities and cylindrical vector beams (CVBs) with polarization singularities, are orthogonally structured light beams providing new degrees of freedom for multiplexing optical communication, for which the multiplexer is the key component. Although there are various OAM detection approaches such as the optical Geometric Transformation and vortex grating, CVB sorting with high efficiency and large dynamic range has not been demonstrated before. In this work, we propose and demonstrate an efficient approach for multiple coaxial CVB sorting based on the spin-dependent optical Geometric Transformation using the Pancharatnam–Berry optical element device fabricated with the photoaligned liquid crystal. We demonstrate a CVB multiplexing communication system in both free space and few-mode optical fiber. The CVB sorter is compatible with wavelength division multiplexing and shows the potential to further increase the communication capacity by 1–2 orders of magnitude

Omer Civalek - One of the best experts on this subject based on the ideXlab platform.

  • Buckling of carbon nanotube (CNT)-reinforced composite skew plates by the discrete singular convolution method
    Acta Mechanica, 2020
    Co-Authors: Omer Civalek, M. H. Jalaei
    Abstract:

    A Geometric Transformation method based on discrete singular convolution (DSC) is firstly applied to solve the buckling problem of a functionally graded carbon nanotube (FG-CNT)-reinforced composite skew plate. The straight-sided quadrilateral plate geometry is mapped into a square domain in the computational space using a four-node DSC Transformation method. Hence, the related governing equations of plate buckling and boundary conditions of the problem are transformed from the physical domain into a square computational domain by using the Geometric Transformation-based singular convolution. The discretization process is achieved via the DSC method together with numerical differential and two different regularized kernels such as regularized Shannon’s delta and Lagrange-delta sequence kernels. The accuracy of the present DSC results is first verified, and then, a detailed parametric study is presented to show the impacts of CNT volume fraction, CNT distribution pattern, geometry of the skew plate and skew angle on the axial and biaxial buckling responses of FG-CNTR composite skew plates with different boundary conditions. Some new results related to critical buckling of an FG-CNT-reinforced composite skew plate are also presented, which can serve as benchmark solutions for future investigations.

  • a four node discrete singular convolution for Geometric Transformation and its application to numerical solution of vibration problem of arbitrary straight sided quadrilateral plates
    Applied Mathematical Modelling, 2009
    Co-Authors: Omer Civalek
    Abstract:

    A four-node discrete singular convolution (DSC) method is developed for free vibration analysis of arbitrary straight-sided quadrilateral plates. The straight-sided quadrilateral domain is mapped into a square domain in the computational space using a four-node element. By using the Geometric Transformation, the governing equations and boundary conditions of the plate are transformed from the physical domain into a square computational domain. Numerical examples illustrating the accuracy and convergence of the DSC method for skew, trapezoidal, rhombic and arbitrary quadrilateral plates are presented. The results obtained by DSC method were compared with those obtained by the other numerical methods.