Simple algorithm for reconstructing fiber gratings from reflectometric data

A simple, fast, and accurate algorithm is presented that is suitable for retrieving spatial grating structures in single-mode waveguides from reflectometric data. In particular, it is tailored to coherence-domain reflectometric measurements. Since the scheme uses a physical/experimental line of reasoning and the standard mathematics of communication theory, it is easy to survey and may also yield a simplified access to generalized problems not covered by the common coupled-mode equations.