Wavelength selective switch for multiple units

Abstract

Disclosed is an invention related to a wavelength selective switch for multiple units. The wavelength selective switch for multiple units according to the present invention comprises: multiple input / output port groups comprising multiple input / output port arrays for transmitting multiple optical beams comprising multiple wavelength channels, respectively; a switching lens portion configured such that optical beams output from respective input / output ports intersect on a switching axis; a first prism portion arranged between the multiple input / output port arrays and the switching lens portion and configured such that respective optical beams groups output from the multiple input / output port arrays refract at different angles on the switching axis; a second prism portion arranged after the switching lens portion and configured such that a center line of an optical beam group output from the switching lens portion is arranged in parallel with an optical axis; a light expansion portion forexpanding the beam size of an optical beam output from the second prism portion in a dispersion axis direction; a light splitting portion for splitting the optical beam, the beam size of which has been expanded by the light expansion portion, at a different angle on the dispersion axis according to the wavelength component; an image lens portion for readjusting and focusing wavelengths split by the light splitting portion; and a switching portion comprising divided surfaces corresponding to the multiple input / output port groups, the switching portion being configured to change the angle of aselected wavelength on the switching axis such that a wavelength selected from multiple wavelength channels of an input port selected independently with regard to each group is transmitted to an output port selected independently.

Description

technical field [0001] The present invention relates to a wavelength selective switch for a plurality of units, and more particularly, to a wavelength selective switch for a plurality of units using a pair of prisms, which constitutes a plurality of units without increasing its components quantity and reduce the manufacturing process. Background technique [0002] Typically, a wavelength selective switch expands the beam output from the input port on the axis of dispersion and directs the beam into a diffraction grating. In a diffraction grating, the light beam is split into multiple wavelength components. The light beam whose wavelength component has been separated in the diffraction grating enters the switching section. In the switching section, the light beams are set or directed to the corresponding output port arrays at predetermined angles according to the wavelength components. A wavelength selective switch for multiple units is a wavelength selective switch that i...

AI Technical Summary

Problems solved by technology

[0003] However, when assembling multiple lenses, the duration and process can be increased

In addition, optical dead zones may be created in regions where adjacent lenses are close to each other, thereby unnecessarily increasing the size of the wavelength selective switch

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