Title:
WAVELENGTH SELECTIVE SWITCH, BEAM TRANSMISSION DIRECTION SCHEDULING METHOD, AND OPTICAL SWITCHING NODE
Document Type and Number:
WIPO Patent Application WO/2024/001619
Kind Code:
A1
Abstract:
A wavelength selective switch, a beam transmission direction scheduling method, and an optical switching node, which are applied to an optical network. The optical network comprises an optical switching node of a ROADM or an OXC. The optical switching node mainly schedules a beam transmission direction by means of a wavelength selective switch, for reducing insertion loss in a beam deflection process. First optical switching engines (211, 402, 422, 502, 522, 611, 708, 718, 721, 731, 811) of the wavelength selective switch are used for deflecting a plurality of sub-beams (231, 232, 403, 411, 421, 503, 521, 702, 712, 725, 735) to obtain a plurality of deflected sub-beams (233, 234, 406, 412, 426, 506, 526, 704, 714, 726, 736), a deflection angle (407, 413, 427, 507, 527, 706, 727, 737) being formed between each deflected sub-beam (233, 234, 406, 412, 426, 506, 526, 704, 714, 726, 736) and the normal line (408, 425, 508, 528, 706) of each first optical switching engine (211, 402, 422, 502, 522, 611, 708, 718, 721, 731, 811), wherein the plurality of sub-beams (231, 232, 403, 411, 421, 503, 521, 702, 712, 725, 735) comprise first sub-beams (403, 421, 503, 521), and the absolute values of first deflection angles (407, 427, 507, 527) corresponding to the deflected first sub-beams (406, 426, 506, 526) are not less than the absolute value of a deflection angle corresponding to any other sub-beam. First included angles (405, 423, 505, 523) are formed between the deflected first sub-beams (406, 426, 506, 526) and the first sub-beams (403, 421, 503, 521), and the absolute value of the first deflection angle is less than the absolute value of the first included angle.
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Inventors:
CHEN RUISHAN (CN)
LI JIANXIONG (CN)
GAO HONGJUN (CN)
LI JIANXIONG (CN)
GAO HONGJUN (CN)
Application Number:
PCT/CN2023/095991
Publication Date:
January 04, 2024
Filing Date:
May 24, 2023
Export Citation:
Assignee:
HUAWEI TECH CO LTD (CN)
International Classes:
G02B6/293; G02B26/08; H04J14/02
Domestic Patent References:
| WO2017008208A1 | 2017-01-19 | |||
| WO2015024238A1 | 2015-02-26 |
Foreign References:
| CN110730034A | 2020-01-24 | |||
| CN110785689A | 2020-02-11 | |||
| CN113740971A | 2021-12-03 | |||
| CN201364399Y | 2009-12-16 | |||
| JP2009042558A | 2009-02-26 |
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