Title :
Chirped RSOA modulation by using adaptive OFDM for long reach WDM-PONs
Author :
Choudhury, Pallab ; Presi, M. ; Cossu, G. ; Chiuchiarelli, A. ; Ciaramella, E.
Author_Institution :
Scuola Superiore Sant´Anna, Pisa, Italy
Abstract :
We theoretically and experimentally characterize the non-negligible power fading in OFDM signaling due to the chirping effect of RSOA. To minimize the power fading, we use power pre-emphasis in OFDM signal. We experimentally investigate this approach in a high speed (10 Gb/s) long reach (60 km) transmission system by using a commercially available RSOA of <;1.5 GHz modulation bandwidth. By this technique we achieve a sensitivity improvement of 5dB. The results presented here are useful to design high speed RSOA based next generation long reach WDM-PONs.
Keywords :
OFDM modulation; adaptive optics; chirp modulation; optical communication equipment; optical design techniques; optical modulation; passive optical networks; semiconductor optical amplifiers; wavelength division multiplexing; adaptive OFDM signal; bit rate 10 Gbit/s; chirped RSOA modulation; distance 60 km; high speed long reach transmission system; modulation bandwidth; next generation long reach WDM-PON; nonnegligible power fading; power pre-emphasis; Chirp; Fading; OFDM; Optical fiber dispersion; Optical fibers; Passive optical networks; Orthogonal Frequency Division Multiplexing (OFDM); Passive Optical Networks (PONs); Reflective Semiconductor Optical Amplifier (RSOA);
Conference_Titel :
Photonics in Switching (PS), 2012 International Conference on
Conference_Location :
Ajaccio
Electronic_ISBN :
978-2-9123-2861-8
