Optical fiber communication system with a distributed Raman amplifier and a remotely pumped er-doped fiber amplifier
US6081366A · kind A · utility
94Cited by
5References
8Claims
0Family size
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Key dates
| Filing date | Aug 28, 1997 |
| Grant date | Jun 27, 2000 |
| Priority date | — |
| Expiry date | Aug 28, 2017 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04B2210/003
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
The disclosed optical fiber communication system comprises a remotely pumped erbium-doped fiber amplifier (EDFA). The pump radiation is de-tuned with respect to wavelength, the wavelength being selected longer than both the optimal wavelengths for pumping the EDFA and for producing Raman gain in the transmission fiber, respectively. Such de-tuning results in improved over-all system performance through reduced multi-path interference. Exemplarily, the pump radiation has wavelength in the range 1490-1510 nm.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.