Nonlinear Phase Noise Reduction of DQPSK Signals by a Phase-Preserving Amplitude Limiter Using Four-Wave Mixing in Fiber
Nonlinear Phase Noise Reduction of DQPSK Signals by a Phase-Preserving Amplitude Limiter Using Four-Wave Mixing in Fiber
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DOI：
10.1109/jstqe.2008.915519
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发表时间：
2008-06
影响因子：
4.9
通讯作者：
M. Matsumoto;T. Kamio
中科院分区：
文献类型：
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作者：
M. Matsumoto;T. Kamio
实验表明，利用高度非线性光纤中四波混频的饱和，全光限幅器进行保相幅度再生，可以提高差分正交相移键控（DQPSK）传输性能。限幅器抑制信号的幅度波动，由此减小由传输光纤中的自相位调制引起的非线性相位变化。在密集色散管理光纤上进行的10-GSymbol/s短脉冲DQPSK传输实验表明，发射机缺陷后的幅度限制使最大发射信号功率增加了5dB。
It is experimentally shown that phase-preserving amplitude regeneration by an all-optical amplitude limiter using saturation of four-wave mixing in a highly nonlinear fiber can enhance differential quadrature phase-shift keying (DQPSK) transmission performance. The limiter suppresses amplitude fluctuations of the signal, by which the nonlinear phase variance caused by self-phase modulation in the transmission fiber is reduced. The 10-GSymbol/s short-pulse DQPSK transmission experiment over densely dispersion-managed fiber shows that the amplitude limitation after an imperfect transmitter increases maximum transmitted signal power by 5 dB.