Analysis of format conversion from optical 16QAM to QPSK based on cascaded four-wave mixing in semiconductor optical amplifier
Analysis of format conversion from optical 16QAM to QPSK based on cascaded four-wave mixing in semiconductor optical amplifier
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DOI：
10.1016/j.ijleo.2013.09.062
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发表时间：
2014-03
期刊：
影响因子：
3.1
通讯作者：
Yueying Zhan;M. Zhang;Mingtao Liu;Lei-an Liu;Zhuo Liu;Xue Chen
中科院分区：
文献类型：
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作者：
Yueying Zhan;M. Zhang;Mingtao Liu;Lei-an Liu;Zhuo Liu;Xue Chen
提出了一种基于级联四波混频(FWM)的光16进制正交幅度调制(16QAM)信号到正交相移键控(QPSK)信号的格式转换方案。对该格式转换方案进行了理论分析和仿真，验证了该方案的可行性。在该方案中，16QAM信号的相位共轭是在一个SOA中的第一次FWM处理后产生的，然后由于第二次非简并的FWM(ND-FWM)处理而被转换成QPSK信号。对10Gbit/S格式转换系统在各种关键参数下的性能和优化设计进行了评估和讨论。仿真结果对骨干网和接入网的互联互通具有一定的参考价值。
A scheme of format conversion from optical 16-ary quadrature amplitude modulation (16QAM) to quadrature phase shift keying (QPSK) signal based on cascaded four-wave mixing (FWM) in semiconductor optical amplifiers (SOAs) is proposed. Theoretical analysis and simulations of the format conversion scheme are conducted to validate the feasibility of the proposal. In this proposal, the phase conjugated of 16QAM signal is generated after the first FWM process in an SOA, and then the QPSK signal is converted due to the second non-degenerate FWM (ND-FWM) process in another SOA. The performance and the optimal design of the 10 Gbit/s format conversion system under various key parameters of SOAs are evaluated and discussed. Simulation results present useful to enable interconnection between backbone network and access network.