一种新型光纤准直器的研究

Studies on a new type of fiber collimator

球对称梯度折射率微球透镜具有体积小、光路短、外形易加工、使用易调整,且无螺旋光线、像差小等优越性能.研究用其制作光纤耦合用准直器的可能.通过理论计算证明了:在适当的技术参数下,用球对称梯度折射率微球透镜制作的光纤准直器有望达到较高的耦合效率;试用实验室制备的梯度折射率聚合物微球透镜制作了这种新型准直器,测试了它的光学性能.

The spherical gradient refractive index micro -lens with small volume and short optical path can be easily shaped and conveniently adjusted, and has no spiral rays and low spherical aben-ation. Possibility of making fiber collimator with witch is discussed in this paper. The result of theoretical computation indicate that if this kind of lens with appropriate parameter is used for fiber collimator, upper collimation effect should be achieved. This new kind of fiber collimator is fabricated with polymer GRIN micro - sphere - lens made in our lab, and testing its optical properties.