OPTICAL DEVICE FOR GENERATING POLYCHROMATIC LIGHT

摘要

The invention relates to an optical device forming a polychromatic light generator, including a laser source capable of providing a pump radiation at a first frequency and a microstructured optical fibre having a core that comprises at least a first and second region. The first and second region have respective chemical compositions arranged so as to define a phase matching such that, in the event of non-linear mode excitation by the pump radiation, the fibre provides a polychromatic light output mainly consisting of the pump radiation as well as of radiation resulting from the pump radiation by a four-wave mixing non-linear effect.