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A Novel Hybrid Three-Band Transport System Based on a DFB LD with Multi-Wavelength Output Characteristic

机译:具有多波长输出特性的基于DFB LD的新型混合三频传输系统

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A potentially cost-effective radio-over-fiber (ROF)/fiber-to-the-X (FTTX)/CATV hybrid three-band transport system based on direct modulation of a distributed feedback laser diode (DFB LD) with multi-wavelength output characteristic is proposed and experimentally demonstrated. Directly modulated radio-frequency (RF) (1.25Gbps/6GHz), externally remodulated baseband (BB) (622 Mbps), and externally remodulated CATV (channels 2-78) signals are successfully transmitted simultaneously. Over an 80-km single-mode fiber (SMF) transmission, low bit error rate (BER) and clear eye diagram were achieved for ROF and FTTX applications; and good performances of carrier-to-noise ratio (CNR), composite second-order (CSO) and composite triple beat (CTB) were obtained for CATV signals. Since our proposed systems use only a directly modulated DFB LD to achieve multi-wavelength transmission, it reveals an outstanding one with simpler and more economic advantages.
机译:基于直接调制多波长分布式反馈激光二极管(DFB LD)的具有潜在成本效益的光纤无线电(ROF)/ X光纤(FTTX)/ CATV混合三波段传输系统提出了输出特性并进行了实验证明。直接调制的射频(RF)(1.25Gbps / 6GHz),外部重新调制的基带(BB)(622 Mbps)和外部重新调制的CATV(2-78频道)信号可以同时成功传输。在80公里的单模光纤(SMF)传输中,针对ROF和FTTX应用实现了低误码率(BER)和清晰的眼图。 CATV信号具有良好的载噪比(CNR),复合二阶(CSO)和复合三拍(CTB)性能。由于我们提出的系统仅使用直接调制的DFB LD来实现多波长传输,因此它揭示了一种具有更简单和更经济优势的出色系统。

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