Title :
Analysis of nonlinear effects in RSOA-Based OFDM-PON
Author :
Guo, Xiaochuan ; Lin, Rujian ; Tan, Yin ; Zhou, Shujia ; Zhang, Jian
Author_Institution :
Key Lab. of Specialty Fiber Opt. & Opt. Access Networks, Shanghai Univ., Shanghai, China
Abstract :
In this paper, a numerical investigation on the nonlinear distortion of OFDM (Orthogonal Frequency Division Multiplexed) signals caused by RSOA (Reflective Semiconductor Optical Amplifier) as an intensity modulator in OFDM-PON system is undertaken. Based on curve fitting approach a fourth order polynomial is, for the first time, used to present the nonlinear gain of RSOA. The expression of in-band and adjacent-band noise due to nonlinear distortion is then derived. Besides, the EVM of system versus input signal power is simulated by VPItransmissionmaker7.6, the results indicate the nonlinear effects-induced degradation of transmission performance depends highly on the third order term of nonlinear distortion power, and the optimum input signal power is provided to improve the transmission performance. Finally, it´s worth mentioning that the quantified analysis method is applicable for the nonlinearity analysis of any RSOA-Based OFDM-PON system.
Keywords :
OFDM modulation; curve fitting; intensity modulation; laser noise; nonlinear distortion; nonlinear optics; optical communication equipment; optical distortion; optical fibre LAN; optical modulation; passive optical networks; polynomials; semiconductor optical amplifiers; EVM; RSOA-based OFDM-PON nonlinear distortion; VPltransmissionmaker7.6; adjacent-band noise; curve fitting; effects-induced degradation; fourth order polynomial; in-band noise; intensity modulator; nonlinear distortion; nonlinear distortion power; nonlinear gain; nonlinearity analysis; optimum input signal power; orthogonal frequency division multiplexing; quantified analysis method; reflective semiconductor optical amplifier; transmission performance; Abstracts; Attenuation; Optical devices; Reflectivity; Nonlinearity; OFDM; Optical modulation; RSOA; SDR(Signal-Distortion-Ratio);
Conference_Titel :
Communications and Photonics Conference and Exhibition, 2011. ACP. Asia
Conference_Location :
Shanghai
Print_ISBN :
978-0-8194-8961-6
