Low-noise distributed Raman amplifier using bi-directional pumping using multiple Raman orders
US6631025B2 · kind B2 · utility
69Cited by
122References
28Claims
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Key dates
| Filing date | Jan 12, 2001 |
| Grant date | Oct 7, 2003 |
| Priority date | — |
| Expiry date | Jun 12, 2021 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04B2210/258
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
A Raman amplifier assembly includes a Raman amplifier configured to receive a signal from a signal source. The signal travels in an upstream direction in the Raman amplifier. A first pump source is coupled to the Raman amplifier. The first pump source produces a first pump beam that travels in a downstream direction and is counter-propagating relative to the signal. A second pump source is coupled to the Raman amplifier and produces a second pump beam that travels in the upstream direction. The second pump source has an average relative intensity noise of less than −80 dB/Hz.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.