Self-imaging properties of polychromatic Gaussian beams: application to wavelength demultiplexing and space routing.
We propose an analytical model of the self-imaging of Gaussian beams and discuss the impact of the finite aperture and the beam truncation on the quality of the self-image reconstruction. Extension to polychromatic operation is then presented in the context of wavelength division multiplexing systems. From the first point we derive conditions for good self-imaging, compatible with the requirements of the telecommunication environment. A basic optical setup is then proposed to implement both wavelength demultiplexing and routing in a lensless configuration.
Nourrit
V
V
Department of Optics, Ecole Nationale Supérieure des Télécommunications de Bretagne, Brest, France. vincent.nourrit@enst-bretagne.fr
de Bougrenet de la Tocnaye
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JL