A birefringence compensation method for mechanically induced long-period fiber gratings

We present a new method of compensating linear birefringence always present in mechanically induced long-period fiber gratings (MLPFGs). With the proposed compensation method the MLPFGs became polarization insensitive and the polarization mode dispersion of the MLPFGs was substantially reduced. (C) 2002 Elsevier Science B.V. All rights reserved.