| Characteristics of High-power GaAs Laser Beams and Their Coupling with Fibers |
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| 作者姓名： | YU Henry Hai-ying CUI Bi-feng TIAN Zeng-xia LIU Ying ZOU De-shu SHEN Guang-di |
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| 作者单位： | Beijing Laboratory of Optoelectron. Technol. , Beijing University of Technology, Beijing 100022, CHN |
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| 基金项目： | 国家重点基础研究发展计划(973计划)，Program of Education Committee of Beijing，Doctoral Starting Foundation;Beijing University of Techlonogy，北京市科委科研项目 |
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| 摘 要： | The beams of 980nm high-power LDs are analyzed, and the reasons that aspect ratio of LD beams is high are explained. It is certified by the test that cylindrical lens can efficiently compress the perpendicular divergence angle of the beam. Some typical and popular lensed fibers were compared and analyzed according to coupling characteristics. The factors which affect the coupling efficiency and tolerance of the wedged-shaped GRIN tipped lensed fiber are pointed out, and some methods to reduce the coupling loss of the lensed fibers are proposed finally.
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| 关 键 词： | GaAs 半导体技术 激光束 光学纤维 激光透镜 GRIN |
| 文章编号： | 1007-0206（2005）04-0233-06 |
| 收稿时间： | 2005-08-26 |
| 修稿时间： | 2005-08-31 |
Characteristics of High-power GaAs Laser Beams and Their Coupling with Fibers |
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| YU Henry Hai-ying CUI Bi-feng TIAN Zeng-xia LIU Ying ZOU De-shu SHEN Guang-di.Characteristics of High-power GaAs Laser Beams and Their Coupling with Fibers[J].Semiconductor Photonics and Technology,2005,11(4):233-238. |
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| Authors: | YU Henry Hai-ying CUI Bi-feng TIAN Zeng-xia LIU Ying ZOU De-shu SHEN Guang-di |
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| Abstract: | The beams of 980 nm high-power LDs are analyzed, and the reasons that aspect ratio of LD beams is high are explained. It is certified by the test that cylindrical lens can efficiently compress the perpendicular divergence angle of the beam. Some typical and popular lensed fibers were compared and analyzed according to coupling characteristics. The factors which affect the coupling efficiency and tolerance of the wedged-shaped GRIN tipped lensed fiber are pointed out, and some methods to reduce the coupling loss of the lensed fibers are proposed finally. |
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| Keywords: | GaAs LD Lensed fibers Optical coupling mode GRIN fibers |
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