Evaluation of effects of MZM nonlinearity on QAM and OFDM signals in RoF transmitter

Author

Yang, H. ; Zeng, J. ; Zheng, Y. ; Jung, H.-D. ; Huiszoon, B. ; van Zantvoort, J.H.C. ; Tangdiongga, E. ; Koonen, A.M.J.

Author_Institution

COBRA Res. Inst., Eindhoven Univ. of Technol., Eindhoven

fYear

2008

fDate

Sept. 9 2008-Oct. 3 2008

Firstpage

90

Lastpage

93

Abstract

We present, both numerically and experimentally, the nonlinearity effect of the intensity modulator in RoF transmitters through the comparison between single-carrier QAM and multi-carrier OFDM signals. The acceptable RF power level of the multi-carrier OFDM signal is 2 dB less compared with the single-carrier signal for the same EVM penalty of 1%, indicating the degradation due to inter-modulation products caused by the modulator nonlinearity for OFDM RoF systems.

Keywords

OFDM modulation; optical fibre networks; optical modulation; optical transmitters; quadrature amplitude modulation; radio-over-fibre; Mach-Zehnder modulator nonlinearity; RoF transmitter; multi-carrier OFDM signals; radio-over-fiber system; single-carrier QAM signals; Degradation; Frequency modulation; Intensity modulation; OFDM modulation; Optical modulation; Optical signal processing; Optical transmitters; Quadrature amplitude modulation; RF signals; Radio frequency;

fLanguage

English

Publisher

ieee

Conference_Titel

Microwave photonics, 2008. jointly held with the 2008 asia-pacific microwave photonics conference. mwp/apmp 2008. international topical meeting on

Conference_Location

Gold Coast, Qld

Print_ISBN

978-1-4244-2168-8

Electronic_ISBN

978-1-4244-2169-5

Type

conf

DOI

10.1109/MWP.2008.4666642

Filename

4666642