Eliasson Henrik, Vijayan Kovendhan, Foo Benjamin, Olsson Samuel L I, Astra Egon, Karlsson Magnus, Andrekson Peter A
Opt Express. 2018 Aug 6;26(16):19854-19863. doi: 10.1364/OE.26.019854.
We demonstrate long-haul transmission using a hybrid amplifier approach combining distributed Raman amplification and lumped phase-sensitive amplification. Aside from the well-known resulting SNR improvement, distributed Raman amplification is included in an effort to improve the nonlinearity mitigation capability of the phase-sensitive amplifiers. When changing from phase-insensitive operation to phase-sensitive operation in a link employing distributed Raman amplification, the transmission reach at BER = 10 is increased from 15 to 44 spans of length 81 km while simultaneously increasing the optimal launch power by 2 dB.
我们展示了一种结合分布式拉曼放大和集总相敏放大的混合放大器方法用于长距离传输。除了众所周知的由此带来的信噪比改善外，纳入分布式拉曼放大是为了提高相敏放大器的非线性抑制能力。在采用分布式拉曼放大的链路中，当从非相敏运行转变为相敏运行时，误码率为10时的传输距离从15个81公里长的跨度增加到44个跨度，同时最佳发射功率增加了2 dB。
