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Journal of Lightwave Technology

Journal of Lightwave Technology

| A JOINT IEEE/OSA PUBLICATION

  • Vol. 26, Iss. 15 — Aug. 1, 2008
  • pp: 2604–2610

Photonic Generation of M-QAM/M-ASK Signals at Microwave/Millimeter-Wave Band Using Dual-Drive Mach–Zehnder Modulators With Unequal Amplitudes

Ye Zhang, Kun Xu, Ran Zhu, Jianqiang Li, Jian Wu, Xiaobin Hong, and Jintong Lin

Journal of Lightwave Technology, Vol. 26, Issue 15, pp. 2604-2610 (2008)


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Abstract

Based on photonic vector modulation (PVM) techniques, several novel schemes are proposed to generate 4-ary amplitude shift keying (4-ASK), 16-ary quadrature amplitude modulation (16-QAM), and 16-ary amplitude shift keying (16-ASK) signals at microwave/millimeter-wave (mm-wave) band. First, a 4-ASK signal generation architecture based on dual-drive Mach–Zehnder modulators (MZMs) with unequal amplitudes is proposed and experimentally demonstrated. Then by combining two 4-ASK signal generation schemes in parallel, PVM architectures for 16-QAM and 16-ASK signal generation are proposed employing three MZMs, a tunable optical delay line (ODL), and an optical attenuator. The detailed theoretical analysis, experiment, and simulation certification of these structures are carried out. Compared with the conventional methods, the electronic driven circuits in the proposed schemes are simplified by employing PVM techniques.

© 2008 IEEE

Citation
Ye Zhang, Kun Xu, Ran Zhu, Jianqiang Li, Jian Wu, Xiaobin Hong, and Jintong Lin, "Photonic Generation of M-QAM/M-ASK Signals at Microwave/Millimeter-Wave Band Using Dual-Drive Mach–Zehnder Modulators With Unequal Amplitudes," J. Lightwave Technol. 26, 2604-2610 (2008)
http://www.opticsinfobase.org/jlt/abstract.cfm?URI=jlt-26-15-2604

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