Karioja P, Howe D
Appl Opt. 1996 Jan 20;35(3):404-16. doi: 10.1364/AO.35.000404.
A diode-laser-to-waveguide butt-coupling model is described. The model takes into consideration the Fabry-Perot reflection and transmission of the étalon formed by the laser front facet and the waveguide entrance facet. The model predicts coupling efficiency and the coupled-power fluctuations that occur versus the separation between the laser and the waveguide. Calculations performed for Fabry-Perot-laser-to-KTP waveguide coupling show that the transverse and the angular alignment tolerances of the waveguide can be increased when the waveguide entrance facet is antireflection coated. The longitudinal alignment tolerance of the waveguide can be increased by use of an index-matching gel between the laser and the waveguide.
描述了一种二极管激光器与波导的对接耦合模型。该模型考虑了由激光前表面和波导入口表面形成的法布里-珀罗标准具的反射和透射。该模型预测了耦合效率以及与激光器和波导之间的间距相关的耦合功率波动。对法布里-珀罗激光器与磷酸钛氧钾（KTP）波导耦合进行的计算表明，当波导入口表面镀有抗反射涂层时，波导的横向和角度对准公差可以增加。通过在激光器和波导之间使用折射率匹配凝胶，可以增加波导的纵向对准公差。
