Arrangement of optical fiber segments for minimizing effect of nonlinearities
US6205268A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Feb 19, 1999 |
| Grant date | Mar 20, 2001 |
| Priority date | — |
| Expiry date | Feb 19, 2019 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04B10/2916
- WIPO fieldTelecommunications
- WIPO sectorElectrical engineering
Abstract
A high-capacity optical fiber network [100, 200] includes wavelength-division multiplexing (WDM) within the 1.4 micron (.mu.m) wavelength region (i.e., 1335-1435 nm). Such a system includes optical fiber [130] whose peak loss in the 1.4 .mu.m region is less than its loss at 1310 nm. The optical fiber has a zero dispersion wavelength (.lambda..sub.0) at about 1310 nm, and linear dispersion between about 1.5 and 8.0 ps/nm-km within the 1.4 .mu.m region. At least three WDM channels operate at 10 Gb/s in the 1.4 .mu.m wavelength region and have a channel separation of 100 GHz. In one illustrative embodiment of the invention, a broadcast television channel, having amplitude modulated vestigial sideband modulation, simultaneously operates in the 1.3 .mu.m region (i.e., 1285-1335 nm) and/or the 1.55 .mu.m region (i.e., 1500-1600 nm). In another embodiment of the invention, 16 digital data channels are multiplexed together in the 1.55 .mu.m region, each channel operating at about 2.5 Gb/s. Raman amplifiers [103, 113] are used for amplification in the 1.3 .mu.m and the 1.4 .mu.m wavelength regions, whereas an Erbium amplifier [123] is used for amplification in the 1.55 .mu.m wavelength regi…
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.