Patent ID: 11962352
Assignee: HUAWEI TECHNOLOGIES CO., LTD.
Field: Telecommunications (Electrical engineering)
Classification: CPC G  H | IPC H

Claim 8:
9. A device, comprising:
a first wavelength division multiplexer (WDM);
a first port, configured to transmit an input first optical signal to the first WDM, wherein the first optical signal is a multi-wavelength signal;
a second port;
an optical splitter;
an optical monitor;
an optical switch; and
a second WDM, wherein the optical splitter and the optical switch are disposed along an optical path between the first WDM and the second WDM;
wherein the first WDM is configured to demultiplex the first optical signal, to obtain a demultiplexed first optical signal, wherein the demultiplexed first optical signal comprises multiple spatially separated wavelength signals;
wherein the optical switch is configured to perform optical switching on the demultiplexed first optical signal;
wherein the optical splitter is configured to split a first optical signal obtained after optical switching to obtain a first sub-signal and a second sub-signal;
wherein the second WDM is configured to multiplex the first sub-signal obtained after optical switching, to obtain a multiplexed first sub-signal;
wherein the second port is configured to output the multiplexed first sub-signal; and
wherein the optical monitor is configured to perform optical performance monitoring on the second sub-signal.