Transfer of repeater information signals in in-line optical amplifier repeater system
US5668658A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Feb 28, 1995 |
| Grant date | Sep 16, 1997 |
| Priority date | — |
| Expiry date | Feb 28, 2015 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04B10/2935
- WIPO fieldTelecommunications
- WIPO sectorElectrical engineering
Abstract
A multi-repeater optical transmission system comprises a plurality of repeaters which are respectively provided with oscillators for generating oscillation waves of different frequencies. The respective oscillation waves are frequency-modulated according to repeater information signals respectively generated in the repeaters. According to the frequency-modulated oscillation waves, respective pumping sources are operated to emit pumping lightwaves for pumping Er-doped fiber amplifiers. The respective pumping lightwaves carrying the repeater information signals are sent out to a transmission line through a wavelength division multiplexing fiber coupler.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.