Tunable Carrier Generation and Broadband Data Upconversion for RoF Systems Based on Stimulated Brillouin Scattering
Tunable Carrier Generation and Broadband Data Upconversion for RoF Systems Based on Stimulated Brillouin Scattering
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DOI：
10.1109/tmtt.2011.2160090
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发表时间：
2011-07
影响因子：
4.3
通讯作者：
Wei Li;N. Zhu;L. Wang;X. Qi;Liang Xie
中科院分区：
文献类型：
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作者：
Wei Li;N. Zhu;L. Wang;X. Qi;Liang Xie
提出了一种用于光纤无线电(ROF)系统的频率可调的射频载波产生和宽带数据上转换技术。采用双并联马赫-曾德尔调制器实现单模调制。另一方面，利用三种结构的受激布里渊散射(SBS)产生单边带(SSB)调制的频率可调的射频载波。通过简单地改变SBS过程中的泵浦功率，可以调节SMM-SSB调制信号的光载边带比，以达到ROF系统的最佳接收灵敏度性能。最后，对ROF下行链路系统的传输性能进行了分析。在25 km单模光纤传输后，误码率为10-9时，功率损失小于1d B。
We present a frequency-tunable RF carrier generation and broadband data upconversion technique for radio-over-fiber (RoF) systems. A dual-parallel Mach-Zehnder modulator is used to realize single-mode modulation (SMM). On the other hand, frequency-tunable RF carrier generation with single-sideband (SSB) modulation is performed using stimulated Brillouin scattering (SBS) with three types of configuration. The optical carrier-to-sideband ratio of the SMM-SSB modulated signal can be adjusted to achieve the best received sensitivity performance of the RoF system by simply modifying the pump power in the SBS process. Finally, the transmission performance of the RoF downlink system is examined. The power penalty is less than 1 dB at the bit-error rate of 10-9 after 25-km single-mode fiber transmission.