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Proceedings Paper

Photonic frequency down-shifting techniques with subcarrier modulation for millimeter-wave band radio over fiber systems
Author(s): Xiupu Zhang; Gang Zhou; Jianping Yao; Ke Wu; Raman Kashyap
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Paper Abstract

Photonic frequency down- shifting techniques for millimeter-wave band radio over fiber (RoF) systems are investigated and verified by simulation. The mechanism of frequency shifting is based on subcarrier modulation (SCM). An optical carrier with a subcarrier is injected into the frequency shifter consisting of a Mach-Zehnder modulator (MZM) or electro-absorption modulator (EAM) driven by a radio frequency sinusoidal signal. The frequency-shifted optical carrier with a frequency-shifted subcarrier is thus generated at least by SCM modulation. Optical modulation depth, the power ratio of output optical carrier to its subcarrier, can be adjusted by using the modulation voltage of the MZM or EAM; and thus RoF system performance can be easily optimized.

Paper Details

Date Published: 3 October 2005
PDF: 11 pages
Proc. SPIE 5971, Photonic Applications in Nonlinear Optics, Nanophotonics, and Microwave Photonics, 59711R (3 October 2005); doi: 10.1117/12.627048
Show Author Affiliations
Xiupu Zhang, Concordia Univ. (Canada)
Gang Zhou, Concordia Univ. (Canada)
Jianping Yao, Univ. of Ottawa (Canada)
Ke Wu, Ecole Polytechnique de Montreal (Canada)
Raman Kashyap, Ecole Polytechnique de Montreal (Canada)


Published in SPIE Proceedings Vol. 5971:
Photonic Applications in Nonlinear Optics, Nanophotonics, and Microwave Photonics
Roberto A. Morandotti; Harry E. Ruda; Jianping Yao, Editor(s)

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