P. Niay et al., POLARIZATION SELECTIVITY OF GRATINGS WRITTEN IN HI-BI FIBERS BY THE EXTERNAL METHOD, IEEE photonics technology letters, 7(4), 1995, pp. 391-393
Gratings have been written in a commercially available elliptical-core
fiber using the transverse holographic method. Type I and II-A dynami
cs have been observed as being strongly anisotropic. As a result, the
grating reflectivity can be made highly polarization dependent accordi
ng to the experimental conditions of the inscription.