2 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.