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基于雪崩光电二极管的正交频分复用10Gb/s无源光网络下行方向传输性能研究(英文)

Transmission Performance Study for 10Gb/s 16QAM-OFDM-PON Downstream Using Avalanche Photodiode
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摘要 无源光网络(PON)通常采用二进制非归零码(NRZ)调制技术,该技术存在如下缺点:系统的频谱效率最低,对无源光网络中相邻射频(RF)电视信道产生拉曼串扰影响,以及高速传输时光纤色散代价大。为了克服上述问题,采用了将正交频分复用(OFDM)调制技术应用于PON系统的解决方法。对基于强度调制和雪崩光电二极管(APD)直接检测的10Gb/s 16位正交幅度调制(16QAM)OFDM-PON系统进行了100km的下行方向传输实验。实验结果表明,在误码率(BER)水平为1×10-3的条件下,系统接收灵敏度可以达到-26dBm。在1556nm波段,传输距离小于100km的情况下,标准单模光纤的色度色散对该系统传输性能的影响可以忽略。 Traditional passive optical network (PON) systems are based on binary non-return-to-zero (NRZ) modulation format, which results in some disadvantages, such as the lowest system spectral efficiency, Raman crosstalk against radio-frequency (RF) video channels and large fiber dispersion penalty. In order to avoid the above problems, applying orthogonal frequency division multiplexing (OFDM) modulation format in PON systems could be a feasible technique. So a 10 Gb/s intensity modulation and direct detection (IM-DD) 16 quadrature amplitude modulation (16QAM) OFDM-PON downstream transmission over 100 km standard single-mode fiber (SSMF) is experimentally demonstrated. The recorded downstream receiving sensitivity is -26 dBm at the bit error rate (BER) level of 1×10-3 using avalanche photodiode (APD) direct detection. The dispersion penalty can be ignored at 1556 nm wavelength when the transmission distance is less than 100 km.
出处 《中国激光》 EI CAS CSCD 北大核心 2013年第7期128-131,共4页 Chinese Journal of Lasers
基金 国家863计划(2011AA01A106)
关键词 光通信 无源光网络 正交频分复用 雪崩光电二极管 接收灵敏度 色散代价 optics communications passive optical network orthogonal frequency division multiplexing avalanche photodiode receiving sensitivity dispersion penalty
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