Analysis of modulator impact factors on flat and stable optical comb generation based on re-circulating frequency shifter for all-optical OFDM

Author

Yingchun Li ; Baojing Ni ; Yingxiong Song ; Lin Zhang ; Jiajun Ye ; Rujian Lin

Author_Institution

Key Lab. of Specialty Fiber Opt. & Opt. Access Networks, Shanghai Univ., Shanghai, China

fYear

2011

fDate

14-16 Nov. 2011

Firstpage

367

Lastpage

370

Abstract

This paper is concerned with the effect of the nonlinearity of a MZM (Mach-Zehnder modulator) on optical OFDM signal distortion. The optical OFDM signal output from the MZM is expressed as a Taylor series including third-order and fifth-order nonlinear distortion terms, by which we can easily establish a mathematical model of the optical OFDM signals in different formats and rates. According to the model, we can get the EVM[1] at the optimized point. Moreover, the proposed theoretical model is proved in good agreement with experiment results of the RoF(Radio over Fiber) system.

Keywords

OFDM modulation; mathematical analysis; optical modulation; radio-over-fibre; EVM; MZM; Mach-Zehnder modulator; RoF system; Taylor series; all-optical OFDM; fifth-order nonlinear distortion terms; mathematical model; modulator impact factors; optical OFDM signal distortion; radio over fiber system; recirculating frequency shifter; stable optical comb generation; third-order nonlinear distortion terms; Flat Optical Frequency Comb; Modulation; Noise; SNR; imperfect factors;

fLanguage

English

Publisher

iet

Conference_Titel

Wireless Mobile and Computing (CCWMC 2011), IET International Communication Conference on

Conference_Location

Shanghai

Type

conf

DOI

10.1049/cp.2011.0911

Filename

6194866