Device for directional and wavelength-selective optical coupling

摘要

A device for directional and wavelength-selective optical coupling formed in a photonic crystal ( 12 ) and comprising two parallel waveguides ( 14, 16 ) separated by a coupling zone ( 18 ) enabling a particular frequency to be extracted from a signal ( 30 ) injected in fundamental mode into one of the waveguide ( 14 ) and to recover said frequency at the outlet ( 34 ) of the other waveguide ( 16 ), extraction and injection being performed by coupling between fundamental and high order modes in each waveguide.