Overcoming Chromatic-Dispersion-Induced Power Fading in ROF Links Employing Parallel Modulators

Author

Cui, Yan ; Xu, Kun ; Dai, Jian ; Sun, Xiaoqiang ; Dai, Yitang ; Ji, Yuefeng ; Lin, Jintong

Author_Institution

State Key Lab. of Inf. Photonics & Opt. Commun., Beijing Univ. of Posts & Telecommun., Beijing, China

Volume

24

Issue

14

fYear

2012

fDate

7/15/2012 12:00:00 AM

Firstpage

1173

Lastpage

1175

Abstract

This letter presents a chromatic dispersion (CD) compensation scheme using parallel electro-optic phase and intensity modulators suitable for long-reach radio-over-fiber links. By properly adjusting the optical power and the time delay between the two modulated signals, the power fading aroused by the CD is adequately compensated over a wide operating bandwidth of 0-18 GHz over a 34-km single-mode fiber (SMF). Compared with a double sideband (DSB) modulated link, an enhancement of up to 31 dB·Hz^2/3 in the spur-free dynamic range for a 9.5-GHz signal is obtained. Furthermore, a bit-error rate of 10^-10 is obtained when a 9.5-GHz carrier loading 2-Gb/s pseudorandom bit sequence is transmitted over the dispersive link, which is not achievable for the DSB modulated link.

Keywords

compensation; electro-optical modulation; error statistics; intensity modulation; optical fibre dispersion; radio-over-fibre; random sequences; ROF links; bit error rate; bit rate 2 Gbit/s; chromatic-dispersion-induced power fading; compensation scheme; distance 34 km; frequency 9.5 GHz; intensity modulators; long-reach radio-over-fiber links; parallel electro-optic phase modulators; parallel modulators; pseudorandom bit sequence; single-mode fiber; Optical fiber communication; Optical fibers; Optical modulation; Optical polarization; Radio frequency; Chromatic dispersion; power fading; radio-over-fiber;

fLanguage

English

Journal_Title

Photonics Technology Letters, IEEE

Publisher

ieee

ISSN

1041-1135

Type

jour

DOI

10.1109/LPT.2012.2192422

Filename

6179513