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Frontiers of Optoelectronics

Front Optoelec Chin    2011, Vol. 4 Issue (3) : 277-281     DOI: 10.1007/s12200-011-0149-6
RESEARCH ARTICLE |
Frequency response equalization in phase modulated RoF systems using optical carrier Brillouin processing
Shilie ZHENG, Sixuan GE, Hao CHI, Xiaofeng JIN, Xianmin ZHANG()
Department of Information Science and Electronic Engineering, Zhejiang University, Hangzhou 310027, China
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Abstract

A novel method is demonstrated to tunably compensate dispersion effect in phase modulated radio over fiber (RoF) links using an optical carrier Brillouin processing technique, which is based on stimulated Brillouin scattering (SBS) to control the phase shift of optical carrier in the modulated lightwave signal. Since this phase shift can be dynamically tuned, frequency response can be tunably improved. Both simulation and experimental results show that a uniform frequency response ranging from 1–12 GHz with a fluctuation of less than±1 dB can be obtained by an optimal phase shift on the optical carrier.

Keywords frequency response      dispersion effect      phase modulation      radio over fiber link      stimulated Brillouin scattering     
Corresponding Authors: ZHANG Xianmin,Email:zhangxm@zju.edu.cn   
Issue Date: 05 September 2011
 Cite this article:   
Shilie ZHENG,Sixuan GE,Hao CHI, et al. Frequency response equalization in phase modulated RoF systems using optical carrier Brillouin processing[J]. Front Optoelec Chin, 2011, 4(3): 277-281.
 URL:  
http://journal.hep.com.cn/foe/EN/10.1007/s12200-011-0149-6
http://journal.hep.com.cn/foe/EN/Y2011/V4/I3/277
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Shilie ZHENG
Sixuan GE
Hao CHI
Xiaofeng JIN
Xianmin ZHANG
Fig.1  Simulated frequency response of 25 km phase modulated RoF links with and without optical carrier Brillouin process
Fig.2  Experimental setup for dispersion compensation
Fig.3  Experimental frequency response of 25 km phase modulated RoF links with and without optical carrier Brillouin process
Fig.4  Measured RF spectra at 2, 12 and 17.71 GHz with (above) and without (bottom) optical carrier Brillouin process when = 10.843 GHz, respectively
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