Patent ID: 11877368
Assignee: HUAWEI TECHNOLOGIES CO., LTD.
Field: Optics (Instruments)
Classification: CPC G  H | IPC G  H

Claim 8:
9. An optical source switching method, applied to an optical device, wherein the optical device comprises:
one or more first optical sources,
an optical cross-connect device, wherein an input of the optical cross-connect device is connected to the one or more first optical sources,
an optical absorption apparatus, wherein the optical absorption apparatus is connected to the optical cross-connect device,
one or more second optical sources, and
a first coupler;
a second coupler;
a first optical modulator; and
a second optical modulator, wherein a first output of the optical cross-connect device is connected to a first input of the first coupler, a second output of the optical cross-connect device is connected to a first input of the second coupler;
a second input of the first coupler is connected to the one or more second optical sources, a second input of the second coupler is connected to the one or more second optical sources;
an output of the first coupler is connected to the first optical modulator, and an output of the second coupler is connected to the second optical modulator;
the one or more first optical sources and the one or more second optical sources are configured to output continuous optical energy;
the optical cross-connect device is configured to enable optical energy output by at least one of the one or more first optical sources to enter the first coupler and the second coupler, the first coupler is configured to couple optical energy output by the one or more second optical sources or the optical cross-connect device into the first optical modulator, and the second coupler is configured to couple optical energy output by the one or more second optical sources and the optical cross-connect device into the second optical modulator;
the first optical modulator is configured to modulate optical energy from the first coupler and the second optical modulator is configured to modulate optical energy from the second coupler;
and the optical source switching method comprises:
detecting, by the optical device, that at least one of the one or more second optical sources fails; and
outputting an optical path switching signal to the optical cross-connect device, wherein the optical path switching signal is used to instruct the optical cross-connect device to establish an optical path on a link on which at least one of the one or more first optical sources and the at least one failed second optical source are located, so that optical energy output by the at least one first optical source enters the at least one first coupler.