Analysis of the stability and optimizing operation of the single-side-band modulator based on re-circulating frequency shifter used for the T-bit/s optical communication transmission.
Analysis of the stability and optimizing operation of the single-side-band modulator based on re-circulating frequency shifter used for the T-bit/s optical communication transmission.
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DOI：
10.1364/oe.18.017597
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发表时间：
2010-08
期刊：
影响因子：
3.8
通讯作者：
Jianping Li;Xuan Li;Xiaoguang Zhang;Feng Tian;Lixia Xi
中科院分区：
文献类型：
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作者：
Jianping Li;Xuan Li;Xiaoguang Zhang;Feng Tian;Lixia Xi
从理论上分析了基于单边带调制器的循环移频器的稳定性。在考虑光放大器放大自发辐射(ASE)噪声和串扰的情况下，研究了用于驱动调制器的最佳射频驱动峰峰值电压，以获得最大的总有效光信噪比(OSNR)，该值被定义为量化产生的音调的质量。较小的期望音数和较低的射频峰峰值电压可以有效地降低串扰。当基于单边带的RFS达到最大OSNR时，应该考虑折衷，因为期望的音调数更大，则应该使用更高的最佳驱动电压。理论结果表明，优化的工作条件有助于提高射频光纤的性能，在实际的T比特/S光传输中具有良好的应用前景。
The stability of single-sideband (SSB) modulator based recirculating frequency shifter (RFS) is analyzed theoretically. The optimum radio frequency (RF) drive peak-to-peak voltage used to drive the modulator is studied with considering the amplified spontaneous emission (ASE) noise of optical amplifier and crosstalk so as to obtain a maximum overall effective optical signal to noise ratio (OSNR) which is defined to quantify the quality of generated tones. Small desired tones number and lower RF peak-to-peak voltage can reduce the crosstalk effectively. While the trade-off should be considered since the larger desired tones number it is, the higher optimum drive voltage should be used when the SSB-based RFS reached the maximum OSNR. The theoretical results show that the optimum operation condition is helpful to improve the performance of RFS which can be a good application for the T-bit/s optical transmission in practice.