1-Tb/s Single-Channel Coherent Optical OFDM Transmission With Orthogonal-Band Multiplexing and Subwavelength Bandwidth Access
1-Tb/s Single-Channel Coherent Optical OFDM Transmission With Orthogonal-Band Multiplexing and Subwavelength Bandwidth Access
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DOI：
10.1109/jlt.2009.2030517
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发表时间：
2010-02
影响因子：
4.7
通讯作者：
Yiran Ma;Qi Yang;Yan Tang;Simin Chen;W. Shieh
中科院分区：
文献类型：
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作者：
Yiran Ma;Qi Yang;Yan Tang;Simin Chen;W. Shieh
利用循环移频器（RFS）产生了由连续4104个频谱重叠子载波组成的1-Tb/s单信道相干光OFDM（CO-OFDM）信号。对RFS进行了理论和实验分析，研究了其在扩展OFDM带宽方面的有效性。特别地，RFS从单个激光器产生具有上级平坦度和色调噪声比（TNR）的320.6-GHz宽频率梳。1-Tb/s的CO-OFDM信号由36个不相关的正交频带组成，通过将RFS的延迟调整为整数个OFDM符号周期来实现。1-Tb/s的CO-OFDM信号的频谱效率为3.3 bit/s/Hz的成功接收后，传输超过600公里的SSMF光纤没有任何拉曼放大或色散补偿。
A 1-Tb/s single-channel coherent optical OFDM (CO-OFDM) signal consisting of continuous 4104 spectrally-overlapped subcarriers is generated using a recirculating frequency shifter (RFS). Theoretical and experimental analysis of the RFS is performed to study its effectiveness in extending OFDM bandwidth. In particular, the RFS produces a 320.6-GHz wide frequency comb from a single laser with superior flatness and tone-to-noise ratio (TNR). The 1-Tb/s CO-OFDM signal is consisted of 36 uncorrelated orthogonal bands achieved by adjusting the delay of the RFS to an integer number of OFDM symbol periods. The 1-Tb/s CO-OFDM signal with a spectral efficiency of 3.3 bit/s/Hz is successfully received after transmission over 600-km SSMF fiber without either Raman amplification or dispersion compensation.