Patent ID: 6711327
Filing Date: 2004-03-23
Classification: G02B,H04B

Abstract:
A device for compensating for chromatic dispersion in an optical signal conducted through an optical waveguide of a type having (i) a fundamental-mode waveguide and (ii) a higher-order mode waveguide surrounding said fundamental-mode waveguide, wherein different effective indexes of refraction are associated with said fundamental-mode and higher-order mode waveguides, said device comprising a transmissive optical grating integrated along a length of said optical waveguide and having a receiving end and a transmitting end, said grating being chirped between said ends along a light conducting axis of said optical waveguide such that different wavelengths of said optical signal are coupled between said fundamental-mode and higher-order mode waveguides at different points along the length of the grating such that chromatic dispersion is corrected at said transmitting end.