Gain-Coupled High-Power Low-RIN 1.55 μm Single-Mode DFB Lasers With Wide Ridge Waveguide

被引：0
|
作者：
He, Mukun [1 ,2 ]
Gan, Lin [1 ,2 ]
Li, Hongtao [1 ,2 ]
Wang, Jian [1 ,2 ]
Han, Yanjun [1 ,2 ]
Sun, Changzheng [1 ,2 ]
Xiong, Bing [1 ,2 ]
Hao, Zhibiao [1 ,2 ]
Wang, Lai [1 ,2 ]
Luo, Yi [1 ,2 ]
机构：
[1] Tsinghua Univ, Beijing Natl Res Ctr Informat Sci & Technol BNRist, Beijing 100084, Peoples R China
[2] Tsinghua Univ, Dept Elect Engn, Beijing 100084, Peoples R China
来源：
IEEE PHOTONICS TECHNOLOGY LETTERS | 2024年 / 36卷 / 10期
关键词：
Waveguide lasers; Gratings; Distributed feedback devices; Laser modes; Measurement by laser beam; Optical waveguides; Semiconductor lasers; Gain-coupling mechanism; carrier density ripple; carrier-injection gratings; double trench ridge waveguide; FEEDBACK SEMICONDUCTOR-LASERS;
D O I：
10.1109/LPT.2024.3386701
中图分类号：
TM [电工技术]; TN [电子技术、通信技术];
学科分类号：
0808 ; 0809 ;
摘要：
A gain-coupled high-power low-RIN 1.55 mu m single-mode distributed feedback (DFB) laser with a 6- mu m -wide ridge waveguide is demonstrated based on an optimized double trench ridge waveguide structure. Gain-coupling mechanism is implemented by carrier-injection gratings. The impact of the doping concentration and thickness variations in the p-InP spacer layer on the carrier density ripple within the active region is investigated to achieve a large gain-coupling coefficient. The fabricated DFB laser exhibits a similar to 220 mW kink-free output power with a relative intensity noise (RIN) below -166 dB/Hz at 25 degrees C. The side-mode suppression-ratio (SMSR) is about 60 dB and the far-field full-width-at-half-maximum (FWHM) divergence angles are 10(degrees)x20(degrees) .
引用
收藏
页码：653 / 656
页数：4
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