Wavelength demultiplexing device in particular for out-of-plane demultiplexing
AssigneeCommissariat A L'energie Atomique Et Aux Energies Alternatives
InventorsCyrielle Monpeurt, Salim Boutami
Life of this patent
Estimating the term…
Abstract
A wavelength demultiplexing device configured so as to spatially distributing the spectral contributions of an incident light beam, when in use, and which includes a linear waveguide and a planar waveguide, formed in a coplanar way and adapted to be optically coupled with one another along a coupling line, by evanescent coupling. Such a device may further include diffraction gratings located in the planar waveguide, to extract light out of the latter.
Claims14
A wavelength demultiplexing device configured to spatially distribute the spectral contributions of an incident light beam when in use, wherein:
- a linear waveguide, adapted to perform an optical guidance along a guide line and over a use wavelength range;
- and
- a planar waveguide, adapted to perform an optical guidance in a guide plane and over said use wavelength range;
- with the linear waveguide and the planar waveguide formed in a coplanar way, and configured so as to be optically coupled with one another by evanescent coupling along a coupling line, when in use,
- a distance between the linear waveguide and the planar waveguide varying decreasingly, along the coupling line and in the direction of propagation of light in the linear waveguide, when in use.
Dependencies are inferred from the claim text.