DYNAMIC DIGITAL HOLOGRAPHIC WAVELENGTH FILTERING

This paper describes the theory and results of a new generic technolog y for use in optical telecommunications and wavelength division multip lexing (WDM): dynamic digital holographic wavelength filtering, The en abling component is a polarization-insensitive ferroelectric liquid cr ystal (FLC) spatial light modulator (SLM) in conjunction with a highly wavelength-dispersive fixed diffractive element, The technology has b een used to perform demultiplexing of single or multiple WDM signals, dynamic erbium-doped fiber amplifier (EDFA) gain equalization and chan nel management, and used to tune an erbium-doped fiber laser (EDFL) fu nctioning as a high power, very narrow linewidth WDM source.