Title:
WAVELENGTH SELECTIVE SWITCH
Document Type and Number:
WIPO Patent Application WO/2023/221802
Kind Code:
A1
Abstract:
A wavelength selective switch (100), comprising a dispersive element (20) and a switching engine (30). The dispersive element (20) can disperse multiplexed light input from input ports (11) into multiple sub-beams in a dispersive plane, and irradiate same to the switching engine (30); the switching engine (30) can deflect the multiple sub-beams according to preset deflection angles in a switching plane to form deflected sub-beams, and output the deflected sub-beams from corresponding output ports (12); and the deflection angles of one wavelength beam and other wavelength beams are different, such that the wavelength beam can be separated and output from a different output port (12), thereby achieving the scheduling and allocation of signal wavelengths. A first lens group (40) is further comprised; the first lens group (40) can irradiate the multiplexed light to the dispersive element (20) in a direction parallel to the dispersive plane in the switching plane, and irradiate the sub-beams dispersed by the dispersive element (20) to the switching engine (30), thereby eliminating an inclined incident angle between the multiplexed light and the dispersive element (20), reducing the conical diffraction effect of the dispersive element (20), and improving the filter passband performance of the wavelength selective switch (100).
Inventors:
ZHENG ZHUJUN (CN)
PAN XU (CN)
YANG HAINING (CN)
PAN XU (CN)
YANG HAINING (CN)
Application Number:
PCT/CN2023/092775
Publication Date:
November 23, 2023
Filing Date:
May 08, 2023
Export Citation:
Assignee:
HUAWEI TECH CO LTD (CN)
International Classes:
G02B6/293; G02B6/27
Domestic Patent References:
| WO2021238751A1 | 2021-12-02 |
Foreign References:
| CN114070450A | 2022-02-18 | |||
| CN112987185A | 2021-06-18 | |||
| CN206248886U | 2017-06-13 | |||
| JP2006276216A | 2006-10-12 | |||
| US20130163921A1 | 2013-06-27 |
Attorney, Agent or Firm:
LEADER PATENT & TRADEMARK FIRM (CN)
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