Unrepeatered long haul optical fiber transmission systems
US8538218B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Feb 18, 2011 |
| Grant date | Sep 17, 2013 |
| Priority date | — |
| Expiry date | Jul 26, 2031 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG02B6/02019
- WIPO fieldTelecommunications
- WIPO sectorElectrical engineering
Abstract
A long haul optical fiber transmission system includes a transmitter having a modulated bit rate of at least 40 Gb/s. A receiver is optically coupled to the transmitter with a composite optical fiber span. The optical fiber includes a first optical fiber coupled to the transmitter and a second optical fiber coupled to the first optical fiber. The first optical fiber has an effective area of at least 120 μm2, an attenuation of less than 0.180 dB/km, and a length L1 from about 30 km to about 90 km. The second optical fiber has an effective area of less than 120 μm2, an attenuation of less than 0.180 dB/km, and a length L2. The sum of L1 and L2 is at least 160 km. The composite optical fiber span does not include a repeater along the length of the span between the transmitter and the receiver or any rare earth dopants.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.