Experimental Demonstration of Improved Equalization Algorithm for IM/DD Fast OFDM

Author

Xing Ouyang ; Hongyu Zhang ; Yong Chen ; Alam, Shaiful ; Petrovich, Marco N. ; Poletti, Francesco ; Richardson, David J. ; Gunning, Fatima C. G. ; Jian Zhao

Author_Institution

Photonic Syst. Group, Univ. Coll. Cork, Cork, Ireland

Volume

27

Issue

16

fYear

2015

fDate

Aug.15, 15 2015

Firstpage

1780

Lastpage

1783

Abstract

We experimentally investigate the fast orthogonal frequency division multiplexing (OFDM) scheme with improved performance in compensating asymmetric channel impulse response using single-tap equalizers. We demonstrate for the first time 18 Gb/s intensity modulation and direct detection optical fast OFDM over both 80 km standard single-mode fiber at 1.55 μm and 1.15 km hollow-core photonic bandgap fiber at 2 μm. The results show that the proposed algorithm has better performance and lower complexity than the previous schemes under asymmetric channel impulse responses. In addition, the results validate that the emerging 2 μm fiber-optic system can achieve the performance close to that of the 1.55 μm system.

Keywords

OFDM modulation; equalisers; intensity modulation; optical communication equipment; optical fibre communication; optical fibres; photonic band gap; telecommunication channels; IM/DD fast OFDM; asymmetric channel impulse response compensation; bit rate 18 Gbit/s; direct detection; distance 1.15 km; distance 80 km; hollow-core photonic bandgap fiber; improved equalization algorithm; intensity modulation; orthogonal frequency division multiplexing; single-tap equalizers; standard single-mode fiber; wavelength 1.55 mum; wavelength 2 mum; Bit error rate; OFDM; Optical fiber communication; Optical fibers; Optical noise; Signal to noise ratio; Fast orthogonal frequency division multiplexing (OFDM); discrete cosine transform (DCT); single-tap equalizer;

fLanguage

English

Journal_Title

Photonics Technology Letters, IEEE

Publisher

ieee

ISSN

1041-1135

Type

jour

DOI

10.1109/LPT.2015.2443076

Filename

7120919