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实验验证了应用中点谱反转技术实现155Mb/s～10Gb/s频移键控/幅度调制(FSK/IM)正交信号的100km传输。其中,FSK/IM正交信号的频谱反转由基于半导体光放大器(SOA)的四波混频效应实现,此技术有效克服了FSK/IM正交信号在传输中色散带来的影响。实验采用DFB激光器作光源,康宁公司生产的标准单模光纤作传输链路,采用长为1.5mm,光限制因子为0.15的半导体光放大器实现频谱反转。实验中固定FSK/IM的中心波长,测试了接收端FSK与IM信号的眼图,结果发现,标记FSK与数据包IM的性能良好。
Experiments show that mid-point spectral inversion technique is used to realize 100km transmission of 155Mb / s ~ 10Gb / s FSK / IM orthogonal signals. Among them, the spectral inversion of the FSK / IM quadrature signal is realized by a four-wave mixing effect based on a semiconductor optical amplifier (SOA), which effectively overcomes the influence of the dispersion of the FSK / IM quadrature signal during transmission. The experiment uses the DFB laser as the light source and the standard single-mode fiber produced by Corning as the transmission link. The semiconductor optical amplifier with the length of 1.5 mm and the optical confinement factor of 0.15 is used to realize the spectrum inversion. In the experiment, the center wavelength of FSK / IM is fixed, and the eye diagram of the FSK and IM signals at the receiving end is tested. As a result, it is found that the performance of the labeled FSK and the data packet IM is good.