Optical filter with little variation in chromatic dispersion
US6441962B1 · kind B1 · utility
2Cited by
9References
17Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Oct 13, 2000 |
| Grant date | Aug 27, 2002 |
| Priority date | — |
| Expiry date | Oct 13, 2020 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG02B5/1866
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
An optical filter has little variation in chromatic dispersion over its passband, the filter being constituted by a Bragg grating whose pitch varies as a function of distance along the filter with a change in the sense of its concavity. The filter also presents apodization, e.g. apodization by a super-Gaussian function or Blackman apodization. The filter of the invention is adapted to high data rate dense WDM transmission systems.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.