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1. (WO2018103853) A LASER WITH A CONTROLLABLE OUTPUT WAVELENGTH

Pub. No.:    WO/2018/103853    International Application No.:    PCT/EP2016/080303
Publication Date: Fri Jun 15 01:59:59 CEST 2018 International Filing Date: Fri Dec 09 00:59:59 CET 2016
IPC: H01S 5/0625
H01S 5/14
H01S 5/022
H01S 5/06
Applicants: HUAWEI TECHNOLOGIES CO., LTD.
LEALMAN, Ian
Inventors: LEALMAN, Ian
Title: A LASER WITH A CONTROLLABLE OUTPUT WAVELENGTH
Abstract:
A laser comprises a gain section and a plurality of gratings. Each grating is coupled to the gain section to form a respective optical cavity that is capable of generating light of a particular wavelength. The laser also comprises a switch that is configured to select one of the plurality of gratings, such that the optical cavity formed by the gain section and the selected grating generates the light output of the laser. This provides a laser that is tunable between different wavelengths and offers a simple level of tuning control.