公开(公告)号：US20220360870A1

公开(公告)日：2022-11-10

申请号：US17870014

申请日：2022-07-21

Applicant: HUAWEI TECHNOLOGIES CO., LTD.

Inventor： Tenghao LI ,  Yong WANG ,  Hui XIANG

IPC: H04Q11/00 ,  H04J14/02 ,  G02F1/31 ,  G02F1/1362

Abstract: The present disclosure provides example wavelength selective switch (WSS), wavefront control element, and integrated liquid crystal on silicon (LCoS). One example WSS includes an input port fiber array, a demultiplexing/multiplexing grating group, an output port fiber array, and a beam deflection component group including two beam deflection components and at least one wavefront control element located between the demultiplexing/multiplexing grating group and the beam deflection component group or integrated with the LCoS. At least one beam deflection component is a LCoS. The input port fiber array receives multi-wavelength optical signals. The demultiplexing/multiplexing grating group demultiplexes and outputs the multi-wavelength optical signals. The beam deflection component group deflects the multi-wavelength optical signals to the demultiplexing/multiplexing grating group. The demultiplexing/multiplexing grating group multiplexes the multi-wavelength optical signals to the output port fiber array. The wavefront control element and the LCoS jointly modulate optical signals transmitted through N*M wavelength channels.

公开(公告)号：US20240406356A1

公开(公告)日：2024-12-05

申请号：US18775150

申请日：2024-07-17

Applicant: HUAWEI TECHNOLOGIES CO., LTD.

Inventor： Yanzhong LIU ,  Rui GUO ,  Tenghao LI ,  Gen LI

IPC: H04N9/31

Abstract: A spatial light modulator and a projection system are provided. The spatial light modulator includes a substrate layer, a first electrode layer, a first metasurface layer, a phase change material layer, a second electrode layer, and a first flat layer. The first electrode layer and the second electrode layer are respectively disposed on opposite sides of the substrate layer and the first flat layer that are parallel to each other, and the first metasurface layer and the phase change material layer are disposed between the first electrode layer and the second electrode layer. The first metasurface layer includes at least two metasurface units that are sequentially arranged, and a resonance frequency of each metasurface unit corresponds to a preset incident optical wavelength of each metasurface unit. The spatial light modulator performs phase modulation on incident light through the first metasurface layer and the phase change material layer.

公开(公告)号：US20230231642A1

公开(公告)日：2023-07-20

申请号：US18125930

申请日：2023-03-24

Applicant: HUAWEI TECHNOLOGIES CO., LTD.

Inventor： Kui OUYANG ,  Tenghao LI ,  Luo HAN ,  Xiaoshi DONG ,  Fengpei SUN ,  Zhiwu CHANG

IPC: H04J14/02

CPC classification number: H04J14/0212 ,  H04J14/0283 ,  H04J14/0205

Abstract: This application provides a tunable optical add/drop multiplexer T-OADM. A beam adjustment apparatus changes an incident angle at which an incident beam is emitted onto an optical filter. After the optical filter splits the incident beam into a transmitted beam and a reflected beam, the beam adjustment apparatus further adjusts a transmission direction of the transmitted beam emergent from the optical filter and a transmission direction of the reflected beam emergent from the optical filter, so that the transmitted beam and the reflected beam are output to corresponding ports, so as to implement a flexible and controllable T-OADM apparatus. This application may be applied to the optical communication field, for example, may be used to implement add/drop multiplexing of tributary signals in an optical domain in fields such as a long-haul backbone and a metropolitan area network.

公开(公告)号：US20230075373A1

公开(公告)日：2023-03-09

申请号：US17986720

申请日：2022-11-14

Applicant: HUAWEI TECHNOLOGIES CO., LTD.

Inventor： Yong WANG ,  Tenghao LI ,  Hui XIANG

IPC: G02F1/31

Abstract: An optical selective switch includes N input ports, M output ports, an input passive deflection element, an input active deflection element, an output passive deflection element, and an output active deflection element. Each input port is configured to receive input light. Each output port is configured to output to-be-output light from the output port. The input passive deflection element is configured to deflect the input light to a direction corresponding to an intermediate output port. The input active deflection element is configured to deflect the input light to a direction corresponding to a target output port based on the deflection of the input passive deflection element. The output passive deflection element is configured to deflect the to-be-output light to the direction corresponding to the intermediate output port. The output active deflection element is configured to deflect the to-be-output light to the target output port.

公开(公告)号：US20230206869A1

公开(公告)日：2023-06-29

申请号：US18178610

申请日：2023-03-06

Applicant: HUAWEI TECHNOLOGIES CO., LTD.

Inventor： Tenghao LI ,  Hui XIANG

IPC: G09G3/36

CPC classification number: G09G3/36 ,  G09G2340/0435 ,  G09G2310/04

Abstract: A method of wavelength selection and a communication apparatus is applied to fields such as optical communication, optical switching, digital central networks, microwave photonics, liquid crystal antennas, optical phased arrays, beam forming, beam scanning, laser radars, laser projection, laser televisions, holographic display, adaptive optics, laser beam shaping, laser processing, ultrafast laser pulse shaping, laser active imaging, optical tomography scanning, and retinal imaging. When port switching occurs in a WSS apparatus, only image data of a changed local image of an LCoS image is updated within each time interval that is shorter than duration of one image frame, and a driving voltage for a pixel on the LCoS display screen is refreshed based on a priority.

公开(公告)号：US20230194909A1

公开(公告)日：2023-06-22

申请号：US18171160

申请日：2023-02-17

Applicant: HUAWEI TECHNOLOGIES CO., LTD.

Inventor： Tenghao LI ,  Luo HAN ,  Hui XIANG

IPC: G02F1/03

CPC classification number: G02F1/0316 ,  G02F1/0327

Abstract: A spatial light modulator is provided, including a backplane inside which a drive circuit is disposed, a phase adjustment unit, an electrode, and an electrical connection portion. The phase adjustment unit includes a lower cavity mirror, a cavity layer, and an upper cavity mirror, and the lower cavity mirror is located between the cavity layer and the backplane. The electrode includes a first electrode and a second electrode, and the electrode is located inside or on a surface of the phase adjustment unit, and is located on a side that is of the lower cavity mirror and that faces away from the backplane. The electrical connection portion is electrically connected to the electrode and the drive circuit, to form a drive electric field between the first electrode and the second electrode, and adjust a refractive index of the phase adjustment unit.