Huawei Technologies Co., Limited

Yunfei Yan

Zhiyong Feng

Han Zhao

Liangjia Zong

Bing Zou

Shimao Li

Jinlei Wang

A display apparatus includes an image generator including a spatial light modulator that is configured to perform phase modulation on to-be-modulated image light to generate modulated first image light and modulated second image light, and an image display module that is disposed on a light emitting side of the image generator. The image display module includes a first diffusing screen and a second diffusing screen. The first image light is projected on the first diffusing screen and the second image light is projected on the second diffusing screen. A spatial position of the first diffusing screen is different from a spatial position of the second diffusing screen.

Display apparatus and method, and vehicle

One example power equalizer includes an input/output assembly, a multiplexer/demultiplexer, a pre-attenuation component, and a light beam modulator. The multiplexer/demultiplexer demultiplexes a first light beam into a plurality of first sub-wavelength light beams including a particular sub-wavelength light beam, and propagates the plurality of first sub-wavelength light beams to the pre-attenuation component. The pre-attenuation component makes the particular sub-wavelength light beam incident onto the light beam modulator at a preset angle. The light beam modulator performs angular deflection on the plurality of first sub-wavelength light beams to obtain a plurality of second sub-wavelength light beams. The pre-attenuation component then propagates the plurality of second sub-wavelength light beams to the multiplexer/demultiplexer. The multiplexer/demultiplexer multiplexes the plurality of second sub-wavelength light beams into a second light beam.

Power equalizer and adjustment method therefor

An optical cross-connect disclosed herein includes an input-end unit, an optical beam-splitting and switching unit, and an output-end unit. The input-end unit is configured to transmit a set of first light beams to the optical beam-splitting and switching unit. The optical beam-splitting and switching unit is configured to split each light beam in the set of first light beams into second light beams, to obtain a set of second light beams. The optical beam-splitting and switching unit is further configured to: perform optical path deflection on each light beam in the set of second light beams based on a preset optical-path offset parameter set, and transmit, to the output-end unit, the deflected second light beams. The output-end unit is configured to output the set of second light beams.

Optical cross-connect

Embodiments of this application disclose a spectrum processing apparatus, which includes: a port assembly, a lens assembly, a dispersive assembly, a spatial light modulator (SLM), and a reflective element. Each port in the port assembly is configured to transmit an input first light beam to a lens corresponding to the port. Each lens in the lens assembly is configured to adjust a width of the first light beam to obtain a second light beam. The reflective element is configured to reflect the second light beam to the dispersive assembly. The dispersive assembly is configured to decompose the second light beam into a plurality of sub-wavelength light beams. The reflective element is further configured to reflect the plurality of sub-wavelength light beams to the SLM. The SLM is configured to modulate the plurality of sub-wavelength light beams, and reflect at least one modulated sub-wavelength light beam to the reflective element.

Spectrum processing apparatus and reconfigurable optical add-drop multiplexer

Embodiments of the present invention provide a reconfigurable optical add/drop multiplexer, including: an input component, an output component, a beamsplitter, a first switch array, a wavelength dispersion system, a redirection system, and a second switch array. The input component includes M+P input ports, the output component includes N output ports, the beamsplitter is configured to: receive M input beams from M input ports, and split each of the M input beams into at least N parts, to obtain at least M&#xd7;N beams; the first switch array includes at least P switch units; and the second switch array includes N rows of switch units. The first switch array, the beamsplitter, the wavelength dispersion system, the redirection system, and the second switch array are arranged so that P optical add beams and sub-beams of M&#xd7;N beams in the at least M&#xd7;N beams can be routed to the N output ports.

Reconfigurable optical add/drop multiplexer

Embodiments of the present application provide a method and an apparatus for transmitting an optical signal and a wavelength selective switch. The transmission method includes: performing diffraction processing on an input optical signal, to obtain signal light and crosstalk light. The signal light is output to a target output port in a plurality of output ports. The diffraction processing includes deflecting, in a second direction, a diffraction direction of a part or all of the crosstalk light, so that the part or all of the crosstalk light is output to an area outside the output ports.

Method and apparatus for transmitting optical signal, and wavelength selective switch

A signal monitoring method and apparatus for a wavelength selective switch (WSS) are provided. The signal monitoring method for a wavelength selective switch WSS includes: encoding a phase of a first optical engine based on an input WDM signal, so that the WDM signal is split into a transmitted signal and a monitored signal after passing through the first optical engine; inputting the monitored signal to a second optical engine disposed at an output-side grating; and controlling the second optical engine to rotate in a wavelength plane of the WDM signal, so that monitored light of a specified wavelength in the monitored signal is output from the second optical engine at a preset angle.

Signal monitoring method and apparatus for wavelength selective switch WSS

The present invention discloses an optical power equilibrium method and apparatus. The method includes: configuring a liquid crystal on silicon LCOS as a blazed grating pattern whose phase periodically changes, where each period includes three grating segments, a pixel quantity in each period does not change, and a second grating segment is located between a first grating segment and a third grating segment; monitoring power of wavelength signals in a WDM signal, where the WDM signal includes a first wavelength signal; and reducing a phase modulation depth and a pixel quantity of the second grating segment in each period at a first location if power of the first wavelength signal is greater than preset target power, so that the power of the first wavelength signal is the same as the target power, where the first location is a location at which the first wavelength signal is incident to the LCOS.

Optical power equilibrium method and apparatus

A wavelength selective switch (WSS), including an input optical fiber collimation array, a first optical switching engine, a dispersion device, an optical path converter, a second optical switching engine, a third optical switching engine, and an output optical fiber collimation array. A first beam is input from a first port of the input optical fiber collimation array. The first optical switching engine performs angle deflection on the first beam on a first plane. The dispersion device demultiplexes, on a second plane, the angle-deflected first beam into multiple sub-wavelength beams. The second optical switching engine performs angle deflection on the multiple sub-wavelength beams that are obtained by demultiplexing. The dispersion device multiplexes, on the second plane, the angle-deflected multiple sub-wavelength beams. The third optical switching engine performs angle deflection on the multiplexed multiple sub-wavelength beams on the first plane.

Wavelength selective switch, reconfigurable optical add/drop multiplexer, and wavelength selection method

Embodiments of the present invention provide an optical communications apparatus, where the apparatus includes: an input system, a first optical switch array, and an output system, where the input system includes N input ports that are one-dimensionally arranged on a first plane, a first beam expander, a demultiplexer, and a first optical path changer; the first optical switch array includes N&#xd7;K first optical switch units that are two-dimensionally arranged on a second plane, and the first optical switch units can rotate in a first axial line direction and a second axial line direction; and the output system includes a second optical path changer, a second beam expander, a second optical switch array, and M output ports that are two-dimensionally arranged.

Growing community of inventors

Shenzhen, China

Yunfei Yan