Inline fiber-optic polarization analyzers for sensor application

Theoretical and experimental investigations of a new type of inline fiber-optic polarization analyzer are described in this paper. The discussed devices are based on a polarimeter, as well as a Sagnac interferometer configuration, and give the possibility to detect the full polarization changes. Detection of the polarization state as well as its degree in real time by the systems containing a standard single-mode fiber and application of appropriate modulation technique is a new property of the arrangement. The comparison of the described systems based on experimental device investigation is also presented in this paper.