Abstract: A wavelength selective switch comprising a 2D fiber array and a dispersion unit, the dispersion unit is configured to disperse the first beam output from one of the fibers in the 2D fiber array, and generate a plurality of first sub-beams, the dispersion unit is also configured to combine at least a portion of the plurality of first sub-beams to generate a combined second beam, and to transmit the second beam to another fibers in the 2D fiber array; the 2D fiber array comprising a first column of fibers and a second column of fibers, fibers in the second column of fibers and fibers in the first column of fibers are alternately arranged in a switching direction, the second column of fibers is offset from the first column of fibers by a predetermined spacing in a dispersion direction, the dispersion direction is perpendicular to the switching direction.

Abstract: A wavelength selective switch includes an optical fiber array, a multiplexing/demultiplexing component, and a transmission direction adjustment component. The optical fiber array includes a first optical fiber and at least one second optical fiber. The first offset is used to compensate for a second offset of a diffraction spectrum generated when a plurality of single-wavelength optical signals obtained after an optical input signal is processed by the multiplexing/demultiplexing component arrive at the transmission direction adjustment component, so that the second offset of the diffraction spectrum of the plurality of single-wavelength optical signals arriving at the transmission direction adjustment component is 0 or may be ignored. An optical system has a simple structure, and no optical element needs to be added. This increases optical design freedom, facilitates optical path system commissioning, and reduces reliability risks and costs of subsequent products.

Abstract: A wavelength selective switch includes an optical fiber array, a multiplexing/demultiplexing component, and a transmission direction adjustment component. The optical fiber array includes a first optical fiber and at least one second optical fiber. The first offset is used to compensate for a second offset of a diffraction spectrum generated when a plurality of single-wavelength optical signals obtained after an optical input signal is processed by the multiplexing/demultiplexing component arrive at the transmission direction adjustment component, so that the second offset of the diffraction spectrum of the plurality of single-wavelength optical signals arriving at the transmission direction adjustment component is 0 or may be ignored. An optical system has a simple structure, and no optical element needs to be added. This increases optical design freedom, facilitates optical path system commissioning, and reduces reliability risks and costs of subsequent products.

Abstract: The present invention discloses a beam processing device, a beam attenuation and switching device, and an optical wavelength selective switch system. The beam processing device in the present invention includes a polymer polarization grating and a quarter-wave plate array. Splitting and adjustment of a beam polarization state may be implemented by using the polymer polarization grating and the quarter-wave plate array. The beam attenuation and switching device includes a switchable polarization grating and an optical path angle adjustment device, or includes a half-wave liquid crystal plate, a quarter-wave plate, a polymer polarization grating, and an optical path angle adjustment device.