Improved WDM performance of a fibre optical parametric amplifier using Raman-assisted pumping.
Improved WDM performance of a fibre optical parametric amplifier using Raman-assisted pumping.
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DOI：
10.1364/oe.23.000902
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发表时间：
2015-01
期刊：
影响因子：
3.8
通讯作者：
M. Stephens;I. Phillips;P. Rosa;P. Harper;N. Doran
中科院分区：
文献类型：
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作者：
M. Stephens;I. Phillips;P. Rosa;P. Harper;N. Doran
我们实验上演示了一个拉曼辅助光纤参量放大器（RA-FOPA），使用波分复用信号的净增益为20 dB。我们报告的10 × 58 Gb/s 100 GHz的QPSK信号的放大，并表明，通过适当的调谐的参数泵浦功率和频率，增益提高高达5dB的RA-FOPA可以实现从参数和拉曼泵相结合的个人贡献相比。我们比较了RA-FOPA和等效增益的传统FOPA，发现使用RA-FOPA的四波混频串扰显著降低，最高可达5.8 ± 0.4dB。RA-FOPA的最坏情况下的性能损失被发现在所有测量的OSNR，频率和输入功率仅为1.0 ± 0.2dB，使其成为未来通信系统的一个有吸引力的建议。
We experimentally demonstrate a Raman-Assisted Fibre Optical Parametric Amplifier (RA-FOPA) with 20dB net gain using wavelength division multiplexed signals. We report amplification of 10x58Gb/s 100GHz-spaced QPSK signals and show that by appropriate tuning of the parametric pump power and frequency, gain improvement of up to 5dB can be achieved for the RA-FOPA compared with combined individual contributions from the parametric and Raman pumps. We compare the RA-FOPA with an equivalent-gain conventional FOPA and find that four-wave mixing crosstalk is substantially reduced by up to 5.8 ± 0.4dB using the RA-FOPA. Worst-case performance penalty of the RA-FOPA is found to be only 1.0 ± 0.2dB over all measured OSNRs, frequencies and input powers, making it an attractive proposal for future communications systems.