摘要
光纤光栅外腔半导体激光器一般采用波导-光纤的直接耦合方式,光纤与增益芯片的耦合效率对光纤光栅外腔半导体激光器性能影响较大。为了讨论在采用不同类型光纤微透镜时对准误差对耦合效率的影响,寻找最佳微透镜类型,指导器件的设计和装配,分析了锥形和半球形光纤透镜的光线最大接收半角,利用ZEMAX软件进行模拟仿真,得到了两种光纤微透镜分别在位置误差和角度误差下的耦合效率曲线图。结果表明,锥形光纤透镜耦合效果更好,更适合应用于光纤光栅外腔半导体激光器。
Optical fiber Bragg grating external waveguide-fiber direct coupled, thus the coupling cavity laser （FBG-ECL） is generally optical efficiency of fiber and gain chip has great influence on the performance of fiber Bragg grating external cavity semiconductor laser. In order to discuss the effect of alignment errors on the coupling efficiency in the use of different types of fiber optic micro lenses, it is required to the best micro lens type so as to guide the design and assembly of the device. In this paper, the maximum light receiving half angles of the tapered and hemispherical fiber lenses were analyzed, and ZEMAX software was used ot make simulations. The coupling efficiency curves of two kinds of optical fiber micro lenses respectively under the position error and the angle error were obtaied. The results show that the coupling effect of tapered fiber lens is better and more suitable for FBG-ECL applications.
出处
《半导体光电》
CAS
北大核心
2016年第5期636-640,645,共6页
Semiconductor Optoelectronics
关键词
激光技术
外腔半导体激光器
模拟仿真
耦合效率
光纤透镜
laser technique
external cavity laser diode
numerical simulation
coupling efficiency
optical fiber lens
