10Gbit/s QAM dual multiplexing of the optical millimeter-wave generated by quadrupling the frequency of the electrical RF carrier

Min Zhou; Jianxin Ma; Yufeng Shao; Chongxiu Yu; Xiangjun Xin

doi:10.1117/12.905406

14 December 2011 10Gbit/s QAM dual multiplexing of the optical millimeter-wave generated by quadrupling the frequency of the electrical RF carrier

Min Zhou, Jianxin Ma, Yufeng Shao, Chongxiu Yu, Xiangjun Xin

Author Affiliations +

Proceedings Volume 8309, Optical Transmission Systems, Subsystems, and Technologies IX; 830916 (2011) https://doi.org/10.1117/12.905406
Event: SPIE/OSA/IEEE Asia Communications and Photonics, 2011, Shanghai, China

Abstract

This paper has proposed a radio-over-fiber (RoF) link carrying two 10Gb/s 16-QAM mm- wave signal streams. Since the dual-tone 40GHz optical mm-wave are generated by frequency quadrupling via a LiNbO3 modulator and the two QAM signal streams are modulated on each tone by single sideband (SSB) modulation, the frequency requirements of the RF local oscillators and the optical modulators are reduced to 10GHz, which means a cost-effective RoF implement. Since the mm-wave signals in the photocurrent are generated by beating in a SSB pattern, the optical mm-wave signal has great tolerance to the fiber dispersion. Moreover, one optical mm-wave carrier carries two16-QAM 10Gb/s data streams, our link scheme has a higher bandwidth efficiency. The simulation results show that both the constellation diagrams and the eye diagrams of the two different QAM streams are well accepted even after 60 km fiber transmission.

Citation Download Citation

Min Zhou, Jianxin Ma, Yufeng Shao, Chongxiu Yu, and Xiangjun Xin "10Gbit/s QAM dual multiplexing of the optical millimeter-wave generated by quadrupling the frequency of the electrical RF carrier", Proc. SPIE 8309, Optical Transmission Systems, Subsystems, and Technologies IX, 830916 (14 December 2011); https://doi.org/10.1117/12.905406

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KEYWORDS

Quadrature amplitude modulation

Radio over Fiber

Modulation

Eye

Modulators

Radio optics

Signal attenuation

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