The F-915 Single-Mode Fiber Coupler offers efficient single-mode coupling of a laser beam into a bare single-mode optical fiber. It provides the sub-micron positioning resolution necessary for high single-mode coupling efficiency. Fine translation is obtained in these couplers, without changing the angular orientation of the focused beam on the fiber end face. Unlike conventional couplers, in which positioner runouts can exceed fiber misalignment tolerances, the fine-tuning tilt adjustments introduce only a second order translation of the beam. Sub-micron resolution, required to optimize coupling to single-mode fibers, is provided by the kinematic tilt stage that uses fine, 100-pitch adjustment screws to pivot the lens/fiber-holder assembly. Focus and coarse transverse adjustments, required to position the focused laser beam on the fiber end face, are provided by the three-axis positioner that holds the fiber chuck. An M-Series microscope objective is also required. The couplers’ optical axis height is fixed at a nominal 3 inch (75 mm), and they have a pattern of tapped and clearance holes in their base for convenient mounting on Newport tables and breadboards.


F-915单模光纤耦合器提供了有效的单模耦合激光束到裸单模光纤。它提供了高单模耦合效率所需的亚微米定位分辨率。在不改变聚焦光束在光纤端面上的角度方向的情况下，在这些耦合器中获得了良好的平移。与传统的耦合器不同，在传统耦合器中，定位器跳动可能超过光纤失调公差，微调倾斜调整只引入梁的二阶平移。亚微米分辨率，需要优化耦合到单模光纤，提供了运动倾斜阶段，使用罚款，100节调整螺丝，以枢轴镜头/光纤支架大会。聚焦和粗横向调整，需要将聚焦激光束定位在光纤端面上，由三轴定位器提供，该定位器控制光纤卡盘。还需要一个m系列显微镜物镜。耦合器的光轴高度固定在3英寸(75毫米)，其底座上有螺纹孔和间隙孔，便于安装在新港表和面包板上。