US 11,990,987 B2
Multi-wavelength light source and photonic chip
Hongmin Chen, Wuhan (CN); Shuangyuan Wu, Shenzhen (CN); Lin Wu, Wuhan (CN); Lantian Liao, Wuhan (CN); and Xiaogeng Xu, Shenzhen (CN)
Assigned to HUAWEI TECHNOLOGIES CO., LTD., Shenzhen (CN)
Filed by Huawei Technologies Co., Ltd., Shenzhen (CN)
Filed on Jan. 28, 2022, as Appl. No. 17/587,553.
Application 17/587,553 is a continuation of application No. PCT/CN2019/098745, filed on Jul. 31, 2019.
Prior Publication US 2022/0149972 A1, May 12, 2022
Int. Cl. H04J 14/02 (2006.01); H04B 10/50 (2013.01)
CPC H04J 14/0221 (2013.01) [H04B 10/505 (2013.01)] 20 Claims
OG exemplary drawing
 
1. A multi-wavelength light source, comprising:
a laser configured to generate a first optical signal;
an optical modulator coupled to the laser and configured to modulate the first optical signal to obtain a second optical signal, wherein the second optical signal comprises at least two wavelength components;
an optical mixer coupled to the optical modulator and configured to mix frequencies of the at least two wavelength components to obtain a third optical signal, wherein the third optical signal comprises at least four wavelength components;
a demultiplexer coupled to the optical mixer and configured to separate the at least four wavelength components into separate wavelength components;
a wavelength locker coupled to the laser and the demultiplexer and configured to:
detect a wavelength of any one of the separate wavelength components; and
control the laser to adjust a first wavelength of the first optical signal when the wavelength of any one of the separate wavelength components exceeds a wavelength range; and
an optical power adjuster coupled to the demultiplexer and configured to adjust, based on a power threshold, powers of the separate wavelength components.