80ch AM-FDM信号光传输

M. Tanabe, T. Uno, K. Kaida, H. Nakata, K. Fujito, T. Ichida
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引用次数: 3

摘要

作者研究了激光二极管(LD)的过调制问题,该问题会导致复合二阶(CSO)失真并限制最大加载通道数,即使使用完全线性的LD。CSO的测量结果是不同信道数下调制深度的函数。找到了除过调制区域外无失真的理想LD的最大通道数。利用新开发的分布式反馈(DFB) ld进行模拟传输,实现了损耗超过8db的64通道AM-FDM信号传输,光纤发射功率为3mw, CNR为51 dB, CSO小于-60 dBc, CTB小于-65 dBc。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
80ch AM-FDM signals optical transmission
The authors investigate the laser diode (LD) over-modulation which causes composite second-order (CSO) distortion and limits the maximum number of loading channels, even if a perfectly linear LD is used. Measured results of CSO are presented as a function of modulation depth for various numbers of channels. The maximum number of channels is found for an ideal LD which has no distortion except the over-modulation area. Using newly developed distributed-feedback (DFB)-LDs for analog transmission, the authors have achieved 64-channel AM-FDM signal transmission of over 8-dB loss, with a fiber launching power of 3 mW, CNR of 51 dB, CSO of less than -60 dBc, and a CTB of less than -65 dBc.<>
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