Discrete Raman Amplifier

摘要

A discrete Raman amplifier comprises a Raman gain fiber, an input port into the Raman gain fiber for receiving optical signals to be Raman amplified, and an output port out of the Raman gain fiber for emitting Raman-amplified optical signals. A pump light input provides pump light to the Raman gain fiber at a plurality of wavelengths so as to provide Raman amplification over the selected signal wavelength range. Within both the pump light wavelength range and the selected signal wavelength range, the Raman gain fiber has only positive chromatic dispersion, and the Raman gain fiber has a moderate effective area.

主权项

1. A discrete Raman amplifier, comprising:
a Raman gain fiber; an input port into the Raman gain fiber for receiving optical signals to be Raman-amplified; an output port out of the Raman gain fiber for emitting Raman-amplified optical signals; and a pump light input into the Raman gain fiber, wherein the optical signals lie within a selected signal wavelength range, comprising wavelengths ranging from 1530 nm to 1610 nm, wherein the pump light input provides pump light at a plurality of wavelengths, so as to provide Raman amplification over the selected signal wavelength range, wherein, within the selected signal wavelength range:
the Raman gain fiber has only positive chromatic dispersion, andthe Raman gain fiber has an effective area between 20 μm2 and 40 μm2 at wavelength 1550 nm.