光纤的大长度轴向侧面抛磨实验及理论分析

Experiment and Theoretical Analysis of Long Fiber's Axial-Side Rubbing

在光器件的制作中，应用接近纤芯内部或附近传播的光场，常以光纤的轴向侧面抛磨为实现方法．目前小长度的光纤研磨技术已趋于成熟，但大长度的研磨仍为一技术难点．理论分析了光纤研磨的特性；实现了光纤的大长度研磨实验，并比较了实验结果与理论结果：二者变化规律基本相同；研磨精度可控，长度可选，最长可达十几厘米；在给定光纤参数下，得出光纤研磨的适宜深度范围为51．42~57．8μm．

Application of optical field transmitting near or in the vicinity of the fiber core is often needed in the production of optical components, through comparing the implementations in the laboratory, axial-side rubbing of fiber was chosen as the experimental manner. At present, the technology of short fiber＇s rubbing has been basically matured, but the technology of long fiber is still a technical difficulty. The theoretically characters of axial-side rubbing is analyzed, and the experiment of long fiber＇s rubbing is achieved. After the comparison of experimental result and theoretical result, conclusions could be drawn as follows, the changing regularities are basically the same; the precision of rubbing is controllable, the length is optional, and even could be more than 10 cm, and given the parameters of fiber, the depth of rubbing should be controlled between 51.42 and 57.8μm.