论文部分内容阅读
从理论和实验两方面研究了在非周期性多层光纤上写入布拉格光栅的光学特性。从耦合模理论出发,讨论了光纤具有多于一个光敏层的情况。在实验室自制的两类多层光纤上写入光栅的实验也表明,该类光栅具备有一般光栅的普遍光学特性,说明在使用多层光纤作为关键部分构建器件时,需要的各类光栅部件能够通过直接在该类光纤上写入光栅实现。紫外光在氢载掺铒多层光纤上写入光栅的实验说明分层的异种元素掺杂将导致芯区应力增加,从而辅助提高光纤的光敏性。
The optical properties of Bragg gratings written on aperiodic multilayer optical fiber are studied theoretically and experimentally. Starting from the coupled-mode theory, we discuss the case where the optical fiber has more than one photoactive layer. Experiments on writing rasters on two types of multilayered fiber fabricated in the laboratory also show that such rasters have the general optical properties of a general raster indicating that the various types of raster components required to construct the device using the multilayered fiber as a key part It can be achieved by writing a grating directly on this type of fiber. Experiments on ultraviolet light writing gratings on hydrogen-doped erbium-doped multilayered fibers indicate that the delamination of heterogeneous elements will lead to an increase in stress in the core to help increase the photosensitivity of the fiber.