Abstract

Conventional polarization-maintaining fibers have two polarization modes.¹ The crosstalk degrades² with increasing fiber length due to random coupling. Of the several ways to reduce crosstalk for longer distance, the use of the single-polarization optical fibers is most attractive. Until now, several types^3-5 of single-polarization fibers have been reported. However, single-polarization characteristics such as the curvature and length dependence on crosstalk are still uncertain.

© 1989 Optical Society of America