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    Optical phased array structure and fabrication techniques
    42.
    发明授权
    Optical phased array structure and fabrication techniques 有权

    公开(公告)号：US12078911B2

    公开(公告)日：2024-09-03

    申请号：US17754358

    申请日：2020-10-05

    Applicant: University of Rochester

    Inventor： Hui Wu

    IPC: G02F1/295 ,  G01S7/481

    CPC classification number: G02F1/2955 ,  G01S7/4817 ,  G01S7/4814 ,  G02F2202/105

    Abstract: Methods of manufacturing and operating a monolithically integrated optical phase array (OPA) chip device, and the device itself. A three-dimensional (3-D) integrated optical phase array (OPA) chip device. A system of complementary metal-oxide-semiconductor (CMOS) electronics integrated with a three-dimensional integrated optical array chip device. A method of three-dimension photonic integration to improve optical power in optical phase arrays.

    Segmented digital to optical phase-shift converter
    44.
    发明授权
    Segmented digital to optical phase-shift converter 有权

    公开(公告)号：US11809060B2

    公开(公告)日：2023-11-07

    申请号：US16964782

    申请日：2019-01-24

    Applicant: Robert Bosch GmbH

    Inventor： Pedram Lajevardi ,  Behnam Behroozpour ,  Christoph Lang ,  Ken Wojciechowski

    IPC: G02F1/295 ,  G02F1/025

    CPC classification number: G02F1/2955 ,  G02F1/025

    Abstract: A phase-shifter for a light-transmitting waveguide is segmented into multiple segments that can be calibrated to the overall length of a conventional single phase-shifter. Each segment receives a control signal, which can be a single bit signal, with the phase-shift capability of the segmented phase-shifter controlled by which segment(s) receive(s) a control signal. In one implementation, a binary weighting is applied to determine segment lengths. Smaller segments can be increased in length to achieve a 2π offset of the phase shift produced by the segment while maintaining the same binary relationship among segments. In another embodiment, multiple segments of uniform lengths can be used for a single phase-shifter with each segment controlled by an n-bit signal.

    Method for implementing folding MxN wavelength selective switch
    45.
    发明授权
    Method for implementing folding MxN wavelength selective switch 有权

    公开(公告)号：US11803095B2

    公开(公告)日：2023-10-31

    申请号：US17902500

    申请日：2022-09-02

    Applicant: Minzu University of China

    Inventor： Genxiang Chen ,  Yunshu Gao ,  Nan Wang ,  Bing Yu ,  Qian Cui ,  Shengjuan Peng

    IPC: G02F1/295 ,  G02B6/35

    CPC classification number: G02F1/2955 ,  G02B6/3556 ,  G02F2203/05 ,  G02F2203/12 ,  G02F2203/30

    Abstract: A method for implementing folding M×N wavelength selective switch is provided. A one-dimensional single-mode fiber optic collimator array, a short-focus cylindrical mirror, a first long-focus cylindrical mirror, a retroreflector, a transmission phase diffraction grating, a second long-focus cylindrical mirror, a liquid crystal spatial light modulator, and a liquid crystal graphic loading control system are provided along beam transmission direction. The same set of optical elements is used for incident light and outgoing light by ingenious folding structure. The input port and output port of optical signal are consistent in spatial arrangement, thereby reducing space and improving port utilization. Based on composite liquid crystal chips, a working area of the liquid crystal spatial light modulator is doubled, and a quantity of accommodating ports is greatly increased. A quantity of M×N ports of the WSS can be increased greatly by the above structure and design.

    PROGRAMMABLE TWO-DIMENSIONAL SIMULTANEOUS MULTI-BEAM OPTICALLY OPERATED PHASED ARRAY RECEIVER CHIP AND MULTI-BEAM CONTROL METHOD
    46.
    发明公开
    PROGRAMMABLE TWO-DIMENSIONAL SIMULTANEOUS MULTI-BEAM OPTICALLY OPERATED PHASED ARRAY RECEIVER CHIP AND MULTI-BEAM CONTROL METHOD 审中-公开

    公开(公告)号：US20230291483A1

    公开(公告)日：2023-09-14

    申请号：US18197751

    申请日：2023-05-16

    Applicant: ZHEJIANG LAB

    Inventor： Qiang ZHANG ,  Hui YU

    IPC: H04B10/60 ,  G02F1/295 ,  G02F1/31 ,  G02F1/313

    CPC classification number: H04B10/60 ,  G02F1/2955 ,  G02F1/311 ,  G02F1/3131 ,  G02F2202/10 ,  G02F2201/307 ,  G02F2203/70 ,  G02F2201/06 ,  G02F2201/205 ,  G02F2203/58

    Abstract: A programmable two-dimensional simultaneous multi-beam optically operated phased array receiver chip is manufactured based on silicon-on-insulator (SOI) and indium phosphide (InP) semiconductor manufacturing processes, including the SiN process. The InP-based semiconductor is used for preparing a laser array chip and a semiconductor optical amplifier array chip, the SiN is used for preparing an optical power divider, and the SOI semiconductor is used for preparing a silicon optical modulator, a germanium-silicon detector, an optical wavelength multiplexer, a true delay line, and other passive optical devices. The whole integration of the receiver chip is realized through heterogeneous integration of the InP-based chip and the SOI-based chip. Simultaneous multi-beam scanning can be realized through peripheral circuit programming control. The chip not only can realize two-dimensional multi-beam scanning, but also has strong expansibility, such that the chip can be used for ultra-wideband high-capacity wireless communication and simultaneous multi-target radar recognition systems.

    Methods and apparatus for multiplying the image resolution and field-of-view of a pixelated display
    47.
    发明授权
    Methods and apparatus for multiplying the image resolution and field-of-view of a pixelated display 有权

    公开(公告)号：US11681143B2

    公开(公告)日：2023-06-20

    申请号：US16942418

    申请日：2020-07-29

    Applicant: DigiLens Inc.

    Inventor： Jonathan David Waldern ,  Alastair John Grant ,  Milan Momcilo Popovich

    IPC: G02B27/00 ,  G02F1/295 ,  F21V8/00

    CPC classification number: G02B27/0081 ,  G02B6/005 ,  G02B6/0026 ,  G02F1/2955 ,  G02F2203/24

    Abstract: Systems and methods for multiplying the resolution and field-of-view of pixelated displays in accordance with various embodiments of the invention are illustrated. One embodiment includes an apparatus having an image projector for directing light from a pixelated image source into unique angular directions, an image processor electrically connected to the image projector for computing native images of the image source corresponding to first and second field-of-view portions and for computing shifted images in a predefined direction corresponding to the first and second field-of-view portions for sequential display by the image projector, a first set of gratings having a native configuration for propagating the light of the native image and at least one shifted configuration for propagating the light of at least one shifted image, and a second set of gratings having a first configuration for projecting the first field-of-view portion and a second configuration for projecting the second field-of-view portion.

    BEAM STEERING DEVICE AND SYSTEM EMPLOYING SAME
    49.
    发明申请
    BEAM STEERING DEVICE AND SYSTEM EMPLOYING SAME 审中-公开

    公开(公告)号：US20180136540A1

    公开(公告)日：2018-05-17

    申请号：US15805794

    申请日：2017-11-07

    Applicant: SAMSUNG ELECTRONICS CO., LTD.

    Inventor： Jaechul Park

    IPC: G02F1/295 ,  G02B6/35

    CPC classification number: G02F1/2955 ,  B81B7/0003 ,  G02B6/3596 ,  G02B6/4257

    Abstract: A beam steering device and a system employing the same are provided. The beam steering device includes: waveguides provided on a substrate to form channels through which light is transmitted; a modulators provided on the waveguides and configured to change, according to electrical signals, a phase of the light by changing a refractive index of the light which passes through the waveguides; and a driving circuit configured to provide the electrical signals to the modulators to drive the modulators.

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