摘要
设计了一种三角晶格结构的全内反射型光子晶体光纤，并在其包层孔内分别填充折射率为n=1．55～3．35（△n=0．3）的介电材料，使其等效为全固态光子带隙型光子晶体光纤，利用全矢量平面波展开法对其带隙特性进行分析，发现随着折射率的增加，光子带隙的位置逐渐向长波方向移动，导模也越来越少。设计一种工作波长为1550nm的全固态光子带隙型光子晶体光纤，计算得到其对应的归一化传播常数β=8．2时，导模的宽度大约为100nm。该光纤在光电转换或者电光转换等方面具有潜在的应用价值。
The total internal reflective photonic crystal fibre with the triangular nonair--silica structures is designed. The refractive index of dielectric material changes from 1.55 to 3.35 （△n=0.3） in cladding and then this optical fiber can be con- sidered as all--solid photonic bandgap fiber. We analyze the properties of photonic bandgap with full--vector plane--wave ex- pansion method. It is found that with the refractive index increasing, the position of photonic bandgap shifts towards the region at long wave and guided mode becomes little. All--solid photonic bandgap fiber based on 1550 nm is designed, and the guided mode width is about 100 nm with β=8.2. This optical fiber is valuable in the application of photo--electron or electron--photo
出处
《中国材料科技与设备》
2014年第4期22-23,53,共3页
Chinese Materials Science Technology & Equipment
