Title :
Optical Distribution and Upconversion of MB-OFDM in Ultrawide-Band-Over-Fiber Systems
Author :
Lombard, Philippe ; Guennec, Yannis Le ; Maury, Ghislaine ; Novakov, Emil ; Cabon, Béatrice
Author_Institution :
INP-MINATEC Grenoble, Inst. of Microelectron. Electromagn. & Photonics, Grenoble
fDate :
5/1/2009 12:00:00 AM
Abstract :
Broadband radio-over-fiber networks are raising great interest for intrabuilding distribution and signal processing of ultrawide-band (UWB) signals. In this paper, a unique optical system based on an external modulator biased either in linear or nonlinear regime has been used to realize both distribution of multiband orthogonal frequency-division multiplexing (MB-OFDM) UWB signal and all-optical frequency upconversion of UWB-OFDM subband. The impact of the nonlinearity of the optical link on the MB-OFDM signal is investigated through a simulation model of the complete UWB-over-fiber system. Results have shown enhanced performance of upconverted MB-OFDM subband compared to direct transmission due to optical noise reduction. First experimental results have confirmed simulation results.
Keywords :
OFDM modulation; optical links; optical modulation; radio-over-fibre; MB-OFDM; all-optical frequency upconversion; broadband radio-over-fiber networks; multiband orthogonal frequency-division multiplexing; optical distribution; optical noise reduction; ultrawide-band signals; ultrawide-band-over-fiber systems; Frequency conversion; Frequency division multiplexing; Nonlinear optics; OFDM; Optical fiber networks; Optical mixing; Optical modulation; Optical signal processing; Radio frequency; Stimulated emission; Frequency upconversion; multiband orthogonal frequency-division multiplexing (OFDM); radio-over-fiber; ultrawide-band (UWB);
Journal_Title :
Lightwave Technology, Journal of
DOI :
10.1109/JLT.2008.923233
