Device and method for compensating for chromatic dispersion
US6711327B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Dec 20, 2001 |
| Grant date | Mar 23, 2004 |
| Priority date | — |
| Expiry date | Dec 20, 2021 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG02B6/02366
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
A device and method for compensating for chromatic dispersion in an optical signal. The optical signal is coupled between an optical waveguide of a type having (i) a fundamental-mode waveguide and (ii) a higher-order mode waveguide surrounding the fundamental-mode waveguide, wherein different effective indexes of refraction are associated with the fundamental-mode and higher-order mode waveguides. The device comprises a transmissive, long-period optical grating disposed along a length of the optical waveguide and has a receiving end and a transmitting end. The grating is chirped between the ends along a light conducting axis of the optical waveguide such that different wavelengths of the optical signal are coupled to the fundamental-mode and higher order mode waveguides at different points along the length of the grating so that chromatic dispersion is corrected at the transmitting end.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.