Experimental analysis of birefringence effects on fiber Bragg gratings induced by lateral compression

The induced-birefringence effects on uniform fiber Bragg grating (FBG) and linearly chirped FBG under lateral compression are experimentally investigated, respectively. The group delay (GD) characteristics of linearly chirped FBG under lateral compression are given for the first time. The birefringence of the FBG can be accurately controlled through tuning the voltage applied on piezoelectric transducer (PZT). The experimental results show good agreement with numerical simulations. First-order polarization mode dispersion (PMD) can be compensated with linearly chirped fiber Bragg grating.