Abstract

In the field of the optical communication systems, a chirped fiber grating attracts much attention as a band-rejection filter or a dispersion compensator.¹ The usual fabrication method of the chirped grating is the phase-mask method² using an expensive chirped phase mask. In this paper, we propose a novel fabrication technique of chirped gratings by using a standard unchirped phase mask.

© 1996 Optical Society of America