公开(公告)号：US20160202418A1

公开(公告)日：2016-07-14

申请号：US14301646

申请日：2014-06-11

Applicant: EXFO Inc.

Inventor： Remi FORTIN ,  Gang HE

IPC: G02B6/26 ,  G02B6/028

CPC classification number: G02B6/268 ,  G02B6/0281 ,  G02B6/0288 ,  G02B6/14

Abstract: There is provided a modal distribution conditioner comprising the combination of a mandrel-wrapped optical fiber and an adjustable and fixable loop of optical fiber. It is noted that light entering the modal distribution conditioner is to be generally overfilled compared with the target encircled flux function (as defined by the Standard). The mandrel wrapping introduces macrobends to the optical fiber, inducing modal pre-filtering that roughly transforms the initially overfilled modal distribution to be close to compliance with the appropriate Standard. However, the modal distribution of light having traversed the fixed mandrel typically remains somewhat overfilled. The adjustable loop provides for the fine-tuning of the modal distribution, in conformity with the Standard. Once the requirements defined by the Standard are met, the adjustable loop may be secured in place such that modal distribution becomes fixed and remain stable.

Abstract translation: 提供了一种模式分配调节器，其包括芯棒包裹的光纤和可调节和可固定的光纤环路的组合。 注意到，与目标环绕通量函数（如标准所定义）相比，进入模态分布调节器的光通常被过度填充。 心轴缠绕将宏弯引入光纤，诱导模态预过滤，粗略地将初始过度填充的模态分布转化为接近于符合相应标准。 然而，穿过固定心轴的光的模态分布通常保持有些过度填充。 可调节环路根据标准对模态分布进行微调。 一旦满足标准规定的要求，可调节环路可以固定就位，使得模态分布变得固定并保持稳定。