Apparatus for compensating for dispersion in submarine optical amplification and transmission system
US5793917A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Mar 18, 1996 |
| Grant date | Aug 11, 1998 |
| Priority date | — |
| Expiry date | Mar 18, 2016 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04B2210/252
- WIPO fieldTelecommunications
- WIPO sectorElectrical engineering
Abstract
A dispersion compensating apparatus compensates for a dispersion which occurs in a submarine optical fiber transmission system that operates on optical amplification relay principles for the purpose of easily repairing an optical fiber cable and dispersion compensating cables. A plurality of optical amplifiers are placed in the optical fiber cable. The dispersion compensating cables are housed in the casing of each of those of the optical amplifiers which are positioned at dispersion compensating intervals over the optical fiber cable. The dispersion compensating intervals range from about 500 to 1000 km, for example, with a certain tolerance. The optical amplifiers are positioned at intervals of several tens km, for example, and are located within that tolerance. Each of the dispersion compensating fibers has a length in the range of from 20 to 30 km, and is wound around a bobbin.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.