Compact optical structure with integrated source
AssigneeThomson-CSF
InventorsJean-Pierre Huignard, Pierre Leclerc, Jean-Claude Carballes, Armand Nappo
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Abstract
The invention relates to a compact optical structure comprising a semiconductor emitter junction, a laser or a light emitting diode, coupled to a plane waveguide formed by a layer of photo-polymer deposited on a substrate with a suitable index. A surface layer, of photo-polymer for example, enables the registration of photo-induced diffraction structures performing particular optical functions such as that of a distributed reflector, deflector or lens. Such compact structures are applicable, in particular to the designing of simple, small devices, laser sources with distributed external resonators, interferometric gyrometers, hydrophones, multiplexers or demultiplexers.
Claims13
Compact optical structure comprising a plate comprising a substrate, an integrated laser diode fixed to said substrate having an emission face designed to emit an optical wave, a plane waveguide layer in contact with a face of said substrate, said layer being formed by a photo-polymer with an index higher than that of the underlying layer of the substrate, and an upper layer above the waveguide layer comprising photoinduced diffraction structures entirely separated from said laser diode, the emission face of the diode being arranged in such a way that the wave is guided in the waveguide layer and deflected by the diffraction structures of the upper layer.
Dependencies are inferred from the claim text.