A novel quarter wave plate and its applications to the reflective fiber-optic current sensor

摘要

In this paper, a novel quarter wave plate which is composed of two segments of high birefringence fibers which are orthogonally welded is proposed and demonstrated. The orthogonally welded fibers are used to construct a high birefringence fiber loop mirror (Hi-Bi-FLM). Based on the transfer function of the Hi-Bi-FLP the length difference of the two segments can be calculated and by tuning one of them an equivalent quarter wave plate can be got. The tuning method is analyzed and discussed in detail.