WAVEGUIDE COMPRISING A CHANNEL AND AN ADAPTATION LAYER

摘要

The invention concerns a waveguide comprising a channel (12) on an optical substrate (11), the refractive index of said channel being higher than that of the substrate, and further comprising at least one guide layer (15) arranged on said channel, the index of said guide layer being higher than that of the substrate. Furthermore, the waveguide comprises an adaptation layer (13-14) extending laterally on either side of the channel (12). The invention also concerns a method for making said waveguide.