对波分复用系统传输光纤中调制不稳定性激发的调制旁瓣的范围△λc进行了研究.△λc随输入信号功率P的增加而增加,在较大的功率处(〉10 dBm),△λc的增加很快;为限制调制不稳定性对P的影响,信道间隔△λ必须大于△λc.在小功率(<-10 dBm)处,调制不稳定性对光纤的信噪比(SNR)无影响,SNR随P的增大而增大,随传输长度l(或损耗)的增大而减小.当P较大时,调制不稳定性对光纤的信噪比产生影响,SNR随P的增大而减小,要使SNR达到最大值,P和l有一定的匹配关系.
参考文献
| [1] | Yano Y, Ono T, Fukuchi K et al. 2.6 terabit/s WDM transmission experiment using optical duobinary coding [C]//22 nd Uropean Conference on Optical Communication: Proceedings Vol. 5, Post-Deadline papers, Norway: Telenor R&D, 1996, 5.3-5.6 |
| [2] | Luts R. Experimental investigation of signal distortions induced by cross-phase modulation combined with disper-sion [J]. IEEE Photon. Technol. Lett., 1997, 9(12): 1592-1594 |
| [3] | Agrawal G P. Modulation instability induced by cross-phase modulation [J]. Phys. Rev. Lett., 1987, 59(8): 880-883 |
| [4] | Tai K, Hasegawa A, Tomita A. Observation of modulational instability in optical fibers [J]. Phys. Rev. Lett., 1986,56(2): 135-137 |
| [5] | Drummond P D, Kennedy T A B, Dudley J M et al. Cross-phase modulational instability in high-birefringence fibers [J]. Opt. Commun., 1990, 78(2): 137-142 |
| [6] | Saunders R A, Garthe D, Patel B L et al. Observation of parametric noise amplification owing to modulation instability in anomalous dispersion regime [J]. Electron. Lett., 1995, 31(13): 1088-1090 |
| [7] | Barthelemy A, De La Fuente R. Unusual modulation instability in fibers with normal and anomalous dispersions [J]. Opt. Commun., 1989, 73(5): 409-412 |
| [8] | 李文权,魏雄,黄新邦等.WDM中级联EDFA噪声积累和系统功率预算[J].光通信研究,2000,(3):7-10 |
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