All-Optical Ultra-High-Speed OFDM to Nyquist-WDM Conversion Based on Complete Optical Fourier Transformation
All-Optical Ultra-High-Speed OFDM to Nyquist-WDM Conversion Based on Complete Optical Fourier Transformation
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基于完整光傅立叶变换的全光超高速 OFDM 到奈奎斯特 WDM 转换
DOI：
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发表时间：
2016
影响因子：
4.7
通讯作者：
L. Oxenløwe
中科院分区：
文献类型：
--
作者：
P. Guan;Kasper Meldgaard Roge;H. C. Mulvad;M. Galili;Hao Hu;M. Lillieholm;Toshio Morioka;L. Oxenløwe
我们提出了一种全新的全光超高速正交频分复用（OFDM）到奈奎斯特波分复用（Nyquist- wdm）转换方案，该方案通过使用完全光学傅里叶变换（OFT）交换时间和频谱轮廓来实现。该方案实现了高速OFDM到Nyquist-WDM的转换，无需复杂的光/电/光转换。全光OFDM发射机是基于矩形时间门控产生低占空比的OFDM符号，并与光时分复用相结合，产生更高符号率的OFDM信号。在接收机中，转换后的奈奎斯特-WDM超级信道使用矩形光带通滤波器将WDM解复用为单个奈奎斯特-WDM信道，然后在无符号间干扰点进行光采样。在实验演示中，生成了一个频谱效率（SE）为0.8 symbol/s/Hz的单极化8副载波640 Gb/s差分相移键控OFDM超级信道。然后将OFDM超级信道通过完全OFT转换为8个80gb /s奈奎斯特- wdm信道。完整的OFT基于使用四波混频的两个二次调相级，由色散介质分开。在接收端，BER <；所有通道都得到10-9。转换后的SE保持不变。
We propose a novel all-optical ultra-high-speed orthogonal frequency-division multiplexing (OFDM) to Nyquist wavelength-division multiplexing (Nyquist-WDM) conversion scheme, achieved by exchanging the temporal and spectral profiles using a complete optical Fourier transformation (OFT). This scheme enables high-speed OFDM to Nyquist-WDM conversion without complex optical/electrical/optical conversion. The all-optical OFDM transmitter is based on the generation of OFDM symbols with a low duty cycle by rectangular temporal gating, which in combination with optical time-division multiplexing yields a higher symbol-rate OFDM signal. In the receiver, the converted Nyquist-WDM super-channel is WDM demultiplexed into individual Nyquist-WDM channels using a rectangular optical bandpass filter, followed by optical sampling at the intersymbol-interference free point. In the experimental demonstration, a single-polarization 8-subcarrier 640 Gb/s differential phase-shift keying OFDM super-channel with a spectral efficiency (SE) of 0.8 symbol/s/Hz is generated. The OFDM super-channel is then converted to eight 80-Gb/s Nyquist-WDM channels by complete OFT. The complete OFT is based on two quadratic phase-modulation stages using four-wave mixing, separated by a dispersive medium. In the receiver, a BER <; 10-9 is obtained for all channels. The SE remains unchanged after conversion.
影响因子：
35
作者：
Hillerkuss, D.;Schmogrow, R.;Leuthold, J.
通讯作者：
Leuthold, J.