Simultaneous all-optical frequency downconversion technique utilizing an SOA-MZI for WDM radio over fiber (RoF) applications

Author

Song, Ho-Jin ; Song, Jong-In

Author_Institution

Dept. of Inf. & Commun., Gwangju Inst. of Sci. & Technol.

Volume

24

Issue

8

fYear

2006

Firstpage

3028

Lastpage

3034

Abstract

Simultaneous all-optical frequency-downconversion technique utilizing a semiconductor optical amplifier Mach-Zehnder interferometer (SOA-MZI) is experimentally demonstrated, and its application to a wavelength-division-multiplexing (WDM) radio over fiber (RoF) uplink is proposed. The conversion efficiencies from 22.5 (f_RF) to 2.5 GHz (f_IF=f_RF-2f_LO) are in the range from 1.5 to 3 dB for the optical RF wavelength between 1548 and 1558 nm. Error-free simultaneous all-optical frequency downconversion of the two WDM RoF upstream channels that carry 155-Mb/s differential phase-shift keying data at 22.5 GHz to an optical intermediate frequency signal having the frequency of 2.5 GHz with the power penalty less than 0.1 dB at the bit error rate of 10^-8 is achieved

Keywords

Mach-Zehnder interferometers; differential phase shift keying; error statistics; microwave photonics; optical communication equipment; optical frequency conversion; radio-over-fibre; semiconductor optical amplifiers; telecommunication channels; wavelength division multiplexing; 1548 to 1558 nm; 155 Mbit/s; 2.5 GHz; 22.5 GHz; Mach-Zehnder interferometer; WDM; all-optical frequency downconversion; bit error rate; differential phase-shift keying; error-free frequency downconversion; optical intermediate frequency signal; power penalty; radio over fiber; semiconductor optical amplifier; upstream channels; Bandwidth; Frequency conversion; Microwave photonics; Optical fiber communication; Optical fibers; Optical interferometry; Optical modulation; Radio frequency; Semiconductor optical amplifiers; Wavelength division multiplexing; All-optical frequency downconversion; microwave photonics; photonic mixer; radio over fiber (RoF) system; semiconductor optical amplifier Mach–Zehnder interferometer (SOA-MZI); wavelength division multiplexing;

fLanguage

English

Journal_Title

Lightwave Technology, Journal of

Publisher

ieee

ISSN

0733-8724

Type

jour

DOI

10.1109/JLT.2006.878015

Filename

1667823