文档介绍：多模光纤的弯曲损耗实验研究
(吉首大学物理科学与信息工程学院,湖南吉首 416000)
摘要:随着光通讯、光网络、光传感技术的发展,光纤已经被广泛应用于上述系统作为信息载体和敏感元件。多模光纤以其结构简单、芯径大、耦合效率高,损耗、色散较大而被广泛应用于小型局域网,局域网的铺设线路上往往弯曲较多。因此,研究弯曲对多模光纤所传输信号的衰减对于合理构建和铺设局域网是十分必要的。
为此,,得到了如下结论:(1)。(2)当弯曲半径大于临界值时,弯曲不对损耗产生影响,当弯曲半径小于临界值时,弯曲半径越小则损耗越大;(3)当弯曲圈数到一定程度时,弯曲圈数不影响损耗。
关键词:多模光纤;弯曲损耗;弯曲半径
Experimental study about loss of Multi- molds optical fiber inducing by bending
He Guocai
(College of Physics Science and Information Engineering, Jishou University, Jishou, Hunan 416000)
Abstract:Along with development of the munication, the work, the optical sensor technology, the optical fiber widely is already applied to the above system as the information carrier and the sensitive unit. Multi-molds optical fiber has been applied widely in the LAN for its simple structure, big core diameter, high coupling efficiency, highly waste and big dispersion. The line of LAN always has many bending, therefore, it is necessary to research the bending waste of the multi- molds optical fiber for constructing reasonably and laying down the LAN.
For this,it has been experimental study that the bending loss of -microns- cores-diameters multi-molds silica fiber has the same number of loop with different radius and has the same radius with different number of loop, obtained the following conclusion: (1) The multi- molds optical fiber have a marginal when has curving centimeters to 5 centimeters. (2) The winding radius is bigger than marginal, it is not influence lost. The winding radius is
more small the lost more big when the winding radius smaller then
marginal. (3) Winding number circle to certain degree, the winding number circle does not affect the loss.
Key word:Multi- molds optical fiber; winding waste; winding radius
目录
摘要…………………………………………………………………………………Ⅰ
关键字………………………………………………………………………………Ⅰ
Abstract……………………………………………………………………………Ⅰ
Keywords………………………………………………………………………