Real-time Fourier transformer based on fiber gratings.
We use the well-known duality between paraxial diffraction in space and dispersion in time to propose a time-domain analog to spatial Fraunhofer diffraction. This analog permits the design of real-time optical Fourier-transformer systems. These systems are shown to be realizable by use of linearly chirped fiber gratings as dispersive media.
Muriel
M A
MA
Tecnología Fotónica, Escuela Técnica Superior de Ingenieros Telecomunicación, Universidad Politécnica Madrid, Ciudad Universitaria s/n, E28040 Madrid, Spain.
Azaña
J
J
Carballar
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A