Title :
Transmission of four channels SCM over fiber and nonlinear compensation for RSOA external modulators
Author :
Liu, Zhansheng ; Violas, Manuel Alberto ; Carvalho, Nuno Borges
Author_Institution :
Dept. Electron. Telecomunicacaoes e Inoformatica, Univ. de Aveiro, Aveiro, Portugal
Abstract :
We experimentally demonstrate the transmission performance of subcarrier multiplexing (SCM) over fiber, where a bulk reflective semiconductor optical amplifier (RSOA) is used as an external modulator. Each subcarrier has the bandwidth around 80 MHz, carrying data rate with 480 Mbps using 64 QAM and 2048 IFFT OFDM. The nonlinear distortion of RSOA external modulator significantly limits the transmission of large signals. A digital predistortion based compensation strategy is also presented for a single carrier case.
Keywords :
OFDM modulation; fast Fourier transforms; optical modulation; quadrature amplitude modulation; radio-over-fibre; semiconductor optical amplifiers; subcarrier multiplexing; 2048 IFFT OFDM; 64 QAM OFDM; bit rate 480 Mbit/s; bulk RSOA external modulator; bulk reflective semiconductor optical amplifier external modulator; carrying data rate; digital predistortion; four channel SCM over fiber transmission; nonlinear compensation; nonlinear distortion; signal transmission; single carrier case; subcarrier multiplexing; Modulation; Nonlinear distortion; Optical fiber amplifiers; Optical fiber communication; Optical fiber devices; Radio frequency; Digital predistortion (DPD); distributed antenna systems (DAS); radio over fiber (RoF); reflective semiconductor optical amplifier (RSOA); subcarrier multiplexing (SCM);
Conference_Titel :
GLOBECOM Workshops (GC Wkshps), 2011 IEEE
Conference_Location :
Houston, TX
Print_ISBN :
978-1-4673-0039-1
Electronic_ISBN :
978-1-4673-0038-4
DOI :
10.1109/GLOCOMW.2011.6162425
