SYSTEM AND METHOD FOR APPLYING ORTHOGONAL LIMITATIONS TO LIGHT BEAMS USING MICROELECTROMECHANICAL SYSTEMS

    公开(公告)号:US20190025760A1

    公开(公告)日:2019-01-24

    申请号:US16127729

    申请日:2018-09-11

    IPC分类号: G03H1/26 G02B26/08 G03H1/22

    摘要: A system contains a light source for generating a plane wave light beam. A MicroElectroMechanical (MEM) system includes an array of micro-mirrors for generating a light beam having a plurality of orbital angular momentum modes multiplexed together within the light beam responsive to the plane wave light beam and control signals for controlling the array of micro-mirrors. A controller generates the control signals to dynamically control a position of each of a plurality of micro-mirrors of the array of micro-mirrors to apply the plurality of orbital angular momentum modes on to the light beam. The controller controls the position of the plurality of micro-mirrors to dynamically generate a plurality of holograms for dynamically applying the plurality orbital angular momentum modes to the plane wave light beam and to dynamically encode a phase and amplitude of the light beam responsive to the control signals.

    System and method for transmissions using eliptical core fibers

    公开(公告)号:US10168501B2

    公开(公告)日:2019-01-01

    申请号:US15608609

    申请日:2017-05-30

    发明人: Solyman Ashrafi

    摘要: A system for transmission of optical data signals has first optical processing circuitry for receiving a plurality of digital signals and applying at least one of a Hermite-Gaussian function, a Laguerre-Gaussian function or an Ince-Gaussian function to each of the received plurality of digital signals. The first optical processing circuitry also combines each of the at least one of the Hermite-Gaussian function, the Laguerre-Gaussian function or the Ince-Gaussian function applied plurality of digital signals into a single carrier signal. An optical transmitter transmits the single carrier signal. An optical receiver receives the transmitted single carrier signal. Second optical processing circuitry separates the at least one of the Hermite-Gaussian function, the Laguerre-Gaussian function or the Ince-Gaussian function applied digital signals of the single carries signal into separate signals and removes the at least one of the Hermite-Gaussian function, the Laguerre-Gaussian function or the Ince-Gaussian function applied to each of the plurality of digital signals. An elliptical core fiber transmits the single carrier signal from the optical transmitter to the optical receiver. The elliptical core fiber includes an elliptical core have a major axis and a minor axis.

    Shorter wavelength transmission of OAM beams in conventional single mode fiber

    公开(公告)号:US10084541B2

    公开(公告)日:2018-09-25

    申请号:US15459950

    申请日:2017-03-15

    发明人: Solyman Ashrafi

    摘要: A method for transmission of orbital angular momentum (OAM) data over an optical fiber involves generating an optical signal at a selected wavelength. A ratio of a diameter of a core of the optical fiber to the selected wavelength of the optical signal enables transmission of a predetermined number of orbital angular momentum modes over the optical fiber. The optical signal is modulated with at least one input data stream and an OAM signal is applied to the modulated optical signal to generate the OAM data signal. The OAM data signal is transmitted over the optical fiber using a fiber launcher. A received OAM data signal is processed to extract the at least one input data stream.

    SYSTEM AND METHOD FOR COMBINING MIMO AND MODE-DIVISION MULTIPLEXING

    公开(公告)号:US20180262243A1

    公开(公告)日:2018-09-13

    申请号:US15960904

    申请日:2018-04-24

    摘要: A communications system comprises first signal processing circuitry for receiving a plurality of input data streams and applying a different orthogonal function to each of the plurality of input data streams. Second signal processing circuitry processes each of the plurality of input data streams having the different orthogonal function applied thereto to multiplex a first group of the plurality of input data streams having a first group of orthogonal functions applied thereto onto a carrier signal and to multiplex a second group of the plurality of input data streams having a second group of orthogonal functions applied thereto onto the carrier signal. A MIMO transmitter transmits the carrier signal including the first group of the plurality of input data streams having the first group of orthogonal functions applied thereto and the second group of the plurality of input data streams having the second group of orthogonal functions applied thereto over a plurality of separate communications links. Each of the plurality of separate communications links go from one transmitting antenna of a plurality of transmitting antennas to each of a plurality of receiving antennas at a MIMO receiver.

    System and method for combining MIMO and mode-division multiplexing

    公开(公告)号:US09998187B2

    公开(公告)日:2018-06-12

    申请号:US15216474

    申请日:2016-07-21

    摘要: A communications system includes first signal processing circuitry for receiving a plurality of input data streams and applying a different orthogonal function to each of the plurality of input data streams. Second signal processing circuitry processes each of the plurality of input data streams having the different orthogonal function applied thereto to locate a first group of the plurality of input data streams having a first orthogonal function applied thereto onto a carrier signal and locates a second group of the plurality of input data streams having a second orthogonal function applied thereto onto the carrier signal. A transmitter transmits the carrier signal including the first group of the plurality of input data streams having the first orthogonal function applied thereto and the second group of the plurality of input data streams having the second orthogonal function applied thereto over a plurality of communications links from a plurality of transmitting antennas.