Efficient compensation methods for modal dispersion in radio over multimode fiber links

Author

Cseh, Tamas ; Berceli, Tibor

Author_Institution

Dept. of Broadband Infocommunications & Electromagn. Theor., Budapest Univ. of Technol. & Econ., Budapest, Hungary

fYear

2014

fDate

16-18 June 2014

Firstpage

1

Lastpage

3

Abstract

The multimode fiber (MMF) is a proper choice for short range optical fiber connections. Several applications need cost effective solutions. These connections can apply MMFs, however, the transmission parameters are degraded by the fiber modal dispersion. Therefore any efficient method to compensate modal dispersion is very important. In this paper mode filtering technique is introduced for that purpose. Two types of mode filters are proposed and tested by simulations and measurements. By the application of mode filters significant improvement is achieved in the transmission of QPSK and QPSK-OFDM signals. E.g. in case of a 500m long multimode fiber link transmitting signals with 500Mb/s bit rate the error vector magnitude (EVM) is improved from 40% to 5%.

Keywords

compensation; filtering theory; optical fibre dispersion; quadrature phase shift keying; radio-over-fibre; EVM; MMF; QPSK signals; QPSK-OFDM signals; bit rate 500 Mbit/s; compensation method; distance 500 m; error vector magnitude; modal dispersion; mode filtering technique; radio over multimode fiber links; short range optical fiber connections; Air cleaners; Modulation; Optical fiber dispersion; Optical fiber filters; Optical fiber networks; Optical fibers; OFDM over Fiber Links; QPSK; Radio over Fiber; modal dispersion; mode filtering; multimode fiber;

fLanguage

English

Publisher

ieee

Conference_Titel

Microwaves, Radar, and Wireless Communication (MIKON), 2014 20th International Conference on

Conference_Location

Gdansk

Print_ISBN

978-617-607-553-0

Type

conf

DOI

10.1109/MIKON.2014.6899953

Filename

6899953