Dispersion shifted optical fiber and method of forming the same
US6449416B1 · kind B1 · utility
Assignee
Inventors
Key dates
| Filing date | Dec 30, 1998 |
| Grant date | Sep 10, 2002 |
| Priority date | — |
| Expiry date | Dec 30, 2018 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG02B6/0285
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
A dispersion shifted optical fiber includes: a first core having a constant refractive index within a predetermined radius from the center of an optical fiber, a second core which covers the first core and has a refractive index which decreases from the refractive index of the first core with an increase in its radius, and a cladding which covers the second core and has a refractive index smaller than the minimum refractive index of the second core. Accordingly, the core structure of an optical fiber is controlled, and the optical fiber has a refractive index distribution being a complex of a staircase type having low dispersion and a triangular type having low loss, thus resulting in an optical fiber having low dispersion and low loss.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.