A single polarization fiber with ultra flattened dispersion and high birefringence

A novel design of a single polarization fiber is proposed in this work. The fiber comprises an elliptical core with a central air-hole and side air holes. Analysis of different polarization properties of the newly designed fiber has been performed both with and without the presence of thermal stress. The investigation shows that the new design has larger birefringence compared to conventional side-hole fiber. When thermal stress is taken into account, the fiber shows higher birefringence, no change in group velocity dispersion and lower polarization mode dispersion. These findings might serve as a ground for justification of the new design and also for its potential applications.