激光线宽
铌酸锂
材料科学
激光器
光学
光电子学
谐振器
半导体激光器理论
光子学
光子集成电路
半导体
物理
作者
Mengjie Han,Jinye Li,Haiyang Yu,Dechen Li,Run Li,Jianguo Liu
出处
期刊:Optics Express
[The Optical Society]
日期:2024-01-11
卷期号:32 (4): 5632-5632
被引量:2
摘要
Narrow linewidth lasers have a wide range of applications in the fields of coherent optical communications, atomic clocks, and measurement. Lithium niobate material possesses excellent electro-optic and thermo-optic properties, making it an ideal photonic integration platform for a new generation. The light source is a crucial element in large-scale photonic integration. Therefore, it is essential to develop integrated narrow linewidth lasers based on low-loss LNOI. This study is based on the multimode race-track type add-drop microring resonator with multimode interferometric coupler (MMRA-MRR) of the DFB laser self-injection-locked, to achieve the narrowing of linewidth to the laser. The microring external cavity was used to narrow the linewidth of the laser to 2.5 kHz. The output power of the laser is 3.18 mW, and the side-mode suppression ratio is 60 dB. This paper presents an integrated low-noise, narrow-linewidth laser based on thin-film lithium niobate material for the communication band. This is significant for achieving all-optical device on-chip integration of lithium niobate material in the future. It has great potential for use in high-speed coherent optical communication.
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