Abstract
We experimentally evaluate the influence of RIN transfer from pump to signal on the transmission performance of a 10 × 30 Gbaud DP-QPSK transmission system using a 2nd-order ultra-long Raman fiber laser amplifier, considering the effect of cavity front-end reflectivity and forward pump power ratio. The evolution of the Q-factors with distance up to maximum reach is monitored for a 10 × 30 Gbaud DP-QPSK transmission system with WDM channels between 1542.94 nm to 1550.12 nm. A maximum transmission distance of 6479 km is found for configurations with low forward pump powers corresponding to the optimal balance between RIN and ASE impairments.
Highlights
When compared to traditional EDFA lumped amplification, distributed Raman amplification presents a number of well-known potential benefits arising from its improved balance between noise and nonlinear impairments [1, 2]
We experimentally evaluate the influence of relative intensity noise (RIN) transfer from pump to signal on the transmission performance of a 10 x 30 Gbaud DP-QPSK transmission system using a 2nd-order ultra-long Raman fiber laser amplifier, considering the effect of cavity front-end reflectivity and forward pump power ratio
A maximum transmission distance of 6479 km is found for configurations with low forward pump powers corresponding to the optimal balance between RIN and ASE impairments
Summary
When compared to traditional EDFA lumped amplification, distributed Raman amplification presents a number of well-known potential benefits arising from its improved balance between noise and nonlinear impairments [1, 2].
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