Search International and National Patent Collections

223. (WO2018201393) TUNABLE LASER

Pub. No.:    WO/2018/201393    International Application No.:    PCT/CN2017/083052
Publication Date: Fri Nov 09 00:59:59 CET 2018 International Filing Date: Fri May 05 01:59:59 CEST 2017
IPC: H01S 5/065
H01S 5/14
H01S 5/042
Applicants: HUAWEI TECHNOLOGIES CO., LTD.
华为技术有限公司
Inventors: LUO, Jun
罗俊
FENG, Zhiyong
冯志勇
Title: TUNABLE LASER
Abstract:
A tunable laser (300, 1100), comprising a gain module (301, 1101), a sinusoidal comb filter (302, 1103), a narrowband comb filter (303, 1102), a wavelength configuration circuit (304, 1105), and a wavelength tuning circuit (305, 1104). The sinusoidal comb filter (302, 1103) and the narrowband comb filter (303, 1102) both have mutually spaced bandpass filtering windows. The wavelength configuration circuit (304, 1105) is used to receive wavelength information, and to set the position of a first waveband according to the wavelength information, and the wavelength tuning circuit (305, 1104) is used to tune the bandpass filtering windows of the narrowband comb filter (303, 1102), such that the first waveband is overlapped with a second waveband. The tunable laser (300, 1100) is capable of quickly tuning laser light.