Title :
Analysis of OFDM signal distortion in optical fiber links
Author_Institution :
Key Lab. of Specialty Fiber Opt. & Opt. Access Networks, Shanghai Univ., Shanghai, China
Abstract :
This paper is dealing with the non-linear distortion of different optical modulators including directly modulated laser diode (LD), Mach-Zehnder modulator (MZM) and reflective semi-conductor optical amplifier (RSOA), which are candidates of optical device used to make colorless ONUs. To analyze the performance of different optical modulators a unified mathematic model is developed in which the optical OFDM signal output from an optical modulator is expressed as a power series including 1-st order and higher order terms. Based on this statistical model, the performance of the modulators are computed and compared. The effect of third order distortion in modulating signal on error vector magnitude (EVM) is particularly evaluated for optimizing the fiber transmission link.
Keywords :
OFDM modulation; optical communication equipment; optical fibre networks; optical modulation; semiconductor optical amplifiers; Mach-Zehnder modulator; OFDM signal distortion; ONU; directly modulated laser diode; error vector magnitude; fiber transmission link; nonlinear distortion; optical OFDM signal output; optical fiber links; optical modulator; reflective semiconductor optical amplifier; third order distortion; Abstracts; Indexes; Nonlinear optics; Optical distortion; Optical fiber communication; Optical modulation; BER; EVM; MZM; RSOA; nonlinear distortion; optical OFDM;
Conference_Titel :
Communications and Photonics Conference and Exhibition, 2011. ACP. Asia
Conference_Location :
Shanghai
Print_ISBN :
978-0-8194-8961-6
