4 results about "Wavelength selective switching" patented technology

The present disclosure relates to a wavelength selective switching apparatus and a related method thereof. The apparatus includes: at least one input port and a plurality of output ports; a dispersion assembly, configured to respectively disperse a received first-band optical signal and a received second-band optical signal into a plurality of first optical sub-signals and a plurality of second optical sub-signals in a dispersion plane; a first-band filter, configured to reflect the plurality of first optical sub-signals and transmit the plurality of second optical sub-signals; and a light redirection device, configured to make each of a plurality of sub-band optical signals to be emitted toward the first-band filter in a redirected manner. In a port plane, a plurality of optical sub-signals are respectively incident to the first-band filter at an incidence angle within a first predetermined angle range in a backward propagation direction.

A wavelength selective switching (WSS) module and a transmission device are provided, relating to the field of optical transmission. This WSS module enables an all-solid-state optical path without increasing the number or complexity of optical components, thereby reducing the cost of the WSS module. The WSS module includes: a polarization beam splitter unit, a lens, a grating assembly, and an optical switching engine; wherein the polarization beam splitter unit is attached to a first surface of the lens; the optical switching engine is attached to a second surface of the lens; and the grating assembly is attached to a third surface of the lens. The grating assembly has a first region and a second region, wherein the first region and the second region of the grating assembly have different rotation angles with respect to the polarization state of light. Embodiments of this application are applied to the field of optical transmission.

To provide a liquid crystal device capable of quickly inspecting pixels, a wavelength selective switching device, and a method of inspecting pixels of the liquid crystal device.SOLUTION: In a liquid crystal device disclosed herein, each pixel in the first row includes a first switching transistor configured to output a voltage of a pixel drive electrode to a corresponding first data line when in pixel inspection mode, and each pixel in the second row includes a second switching transistor configured to output a voltage of the pixel drive electrode to a corresponding second data line when in pixel inspection mode.SELECTED DRAWING: Figure 11

The present invention discloses a method for secure isolation of the internal network of a hospital based on an all-optical network architecture, comprising the following steps: S1, dividing the internal network of the hospital into multiple virtual optical slices by using all-optical network slicing technology; S2, performing time-domain isolation by using optical time-division multiplexing technology and transmitting data on different optical wavelengths through wavelength selective switching technology; S3, monitoring and managing bandwidth allocation through a software-defined network control platform; S4, performing traffic prediction and resource optimization based on a decision tree ensemble algorithm; S5, detecting potential anomalies and security threats by using a graph neural network; S6, detecting abnormal behaviors through an isolation forest algorithm, marking and isolating abnormal traffic; S7, recording network traffic logs through blockchain technology; S8, when a network failure occurs, automatically switching redundant optical path resources and restoring the optical path by using an intelligent self-healing mechanism. The present invention makes full use of all-optical network slicing and artificial intelligence technologies to achieve secure isolation and resource optimization of the internal network of the hospital.