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Optical multicarrier generator for radio-over-fiber systems
Youngjae Kim, Serge Doucet, Mohammad Ebrahim Mousa Pasandi et Sophie LaRochelle

num. 2, vol. 16, p.1068,
21 janvier 2008 au 31 décembre 1969
Type: Journal

Abstract: We propose an optical multicarrier generation method for radioover-fiber (ROF) systems. The multicarrier generator is composed of a phase-modulated laser and two chirped fiber Bragg gratings used as flattening filters. The chirped gratings are spectrally tailored to equalize the intrinsically uneven envelope of the phase-modulated laser spectrum. A flattened multicarrier spectrum with 7 carriers at a frequency spacing of 12.5 GHz is demonstrated with less than 2 dB peak-to-peak variations and 40 dB optical signal-to-noise ratio (OSNR). We evaluate the quality of the multicarrier generator by using it as an externally modulated source for 802.11 compliant signals. We performed error vector magnitude (EVM) measurements on each of the filtered carrier and found an average value of -32.8 dB compared to -36.2 dB for a tunable laser source. The results show that the multicarrier source could be used for error free transmission.


author = {Youngjae Kim and Serge Doucet and Mohammad Ebrahim Mousa Pasandi and Sophie LaRochelle},
title = {Optical multicarrier generator for radio-over-fiber systems},
journal = {OPTICS EXPRESS},
number = {2},
volume = {16},
pages = {1068},
year = {1969},
month = {December}

Dernière modification le mardi 15 janvier 2008 à 10h33 par Mohammad Ebrahim Mousa Pasandi