Optical fiber for wavelength division multiplexing optical transmission system using densely spaced optical channels
US6684016B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Jul 15, 2002 |
| Grant date | Jan 27, 2004 |
| Priority date | — |
| Expiry date | Jul 22, 2022 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG02B6/03633
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
Disclosed is an optical fiber having a desired dispersion value to sufficiently suppress a non-linearity phenomenon, that is, a four-wave mixing phenomenon, occurring at a channel spacing of 50 GHz while minimizing the expense consumed for a compensation for dispersion. The optical fiber satisfies optical characteristics defined by a dispersion value of 7 to 10 ps/nm-km at a wavelength of 1,550 nm, a zero dispersion wavelength of 1,450 nm or less, and a cut-off wavelength of 1,250 nm or less. The optical fiber includes a core having a desired diameter (d1) and a desired refractive index (n1), the cladding surrounding the core and having a refractive index (ncl) less than the (n1), of the core (ncl<n1) or (n2) less than the outer cladding (n2<ncl). The (n2) of the inner cladding may also be less than the (n1) of the core and more than the (ncl) of the outer cladding.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.