Patent ID: 11916599
Assignee: HUAWEI TECHNOLOGIES CO., LTD.
Field: Telecommunications (Electrical engineering)
Classification: CPC H | IPC H

Claim 0:
1. A wavelength tuning method, comprising:
receiving, by a remote optical module, a wavelength control signal from a central office terminal, wherein the wavelength control signal indicates a target wavelength to be tuned by the remote optical module, and wherein the wavelength control signal is loaded into a first optical service signal in a pilot tone manner;
determining, by the remote optical module, the target wavelength based on the wavelength control signal;
obtaining, by the remote optical module, a temperature control list, wherein the temperature control list comprises a correspondence between different temperatures and different wavelengths;
determining, by the remote optical module, a target temperature corresponding to the target wavelength based on the temperature control list; and
tuning, by the remote optical module, an operating wavelength of the remote optical module to the target wavelength based on the target temperature;
wherein determining, by the remote optical module, the target temperature corresponding to the target wavelength based on the temperature control list comprises:
determining a reference wavelength, wherein the reference wavelength is a wavelength that is in wavelengths comprised in the temperature control list and that has a smallest difference from the target wavelength;
determining an adjacent wavelength comprised in the temperature control list, wherein the adjacent wavelength is a wavelength comprised in the temperature control list and adjacent to the reference wavelength; and
determining the target temperature based on a maximum cut-off wavelength and a minimum cut-off wavelength in a target wavelength range, and the adjacent wavelength.