Shih Po-Tsung, Lin Chun-Ting, Jiang Wen-Jr, Huang Han-Sheng, Chen Jyehong, Ng'oma Anthony, Sauer Michael, Chi Sien
Department of Photonics and Institute of Electro-Optical Engineering, National Chiao-Tung University, Hsinchu 300, Taiwan.
Opt Express. 2010 Jun 7;18(12):12748-55. doi: 10.1364/OE.18.012748.
This work describes a proposed 60-GHz radio-over-fiber (RoF) system employing a frequency sextupling optical up-conversion scheme. Based on the modified single sideband modulation scheme, spectrally efficient vector signals were transmitted with no performance degradation due to dispersion-induced fading. Wavelength-division- multiplexed optical up-conversion can be realized using the proposed system. Since the required transmitter bandwidth is significantly reduced, radio-frequency components with lower bandwidth and higher reliability can be utilized. Both 13.75-Gb/s QPSK-OFDM and 20.625-Gb/s 8QAM-OFDM signals were experimentally demonstrated. After transmission over 25-km of standard single mode fiber, no significant received power penalty was observed.
这项工作描述了一种采用六倍频光上变频方案的60GHz光纤无线（RoF）系统。基于改进的单边带调制方案，在不因色散引起的衰落而导致性能下降的情况下，传输了频谱高效的矢量信号。利用所提出的系统可以实现波分复用光上变频。由于所需的发射机带宽显著降低，因此可以使用带宽更低、可靠性更高的射频组件。实验证明了13.75Gb/s的QPSK-OFDM和20.625Gb/s的8QAM-OFDM信号。在25公里标准单模光纤上传输后，未观察到明显的接收功率损失。
