Optical device comprising a mode adapter on an optical component with photonic band gap

摘要

An optical device comprising a Photonic Forbidden Band (PFB) component composed of a thick material including a distribution of regularly spaced holes, the said photonic forbidden band component being delimited by first and second ends and comprising a wave guide of the total internal reflection (TIR) type, characterised in that the photonic forbidden band component comprises a mode adapter integrated on the first and/or second end of the said photonic component, the mode adapter also consists of a distribution of holes in the photonic forbidden band (PFB) component causing an adiabatic widening of the total internal reflection (TIR) waveguide on the said first and/or second end of the component.