Improved SC-FDE With Noise Filtering for Directly Detected WDM-PON

Author

Sai Chen ; Xiaofei Cheng ; Jie Zhang ; Hongguang Zhang ; Yong-Kee Yeo

Author_Institution

State Key Lab. of Inf. Photonics & Opt. Commun., Beijing Univ. of Posts & Telecommun., Beijing, China

Volume

25

Issue

18

fYear

2013

fDate

Sept.15, 2013

Firstpage

1843

Lastpage

1846

Abstract

We propose a modified single-carrier frequency domain equalization (SC-FDE) scheme implemented in directly detected wavelength-division-multiplexed passive optical networks (WDM-PONs). A time-clipping technique is used in FDE to perform noise filtering. In the simulation, where the channel is modeled with chromatic dispersion and direct detection, performance improvement is achieved by exploring the clipping position and retained gradient vector length. In the experiment, we investigate the time-clipping SC-FDE implemented in 10-Gb/s direct-detected WDM-PON using an uncooled free-running 1550-nm vertical cavity surface emitting laser. After 30-km transmission, it is observed that the time-clipping scheme can bring roughly 1-dB power penalty improvement over conventional equalization schemes.

Keywords

laser cavity resonators; optical fibre networks; optical filters; optical noise; passive optical networks; surface emitting lasers; wavelength division multiplexing; SC-FDE; bit rate 10 Gbit/s; chromatic dispersion; direct-detected WDM-PON; directly detected wavelength-division-multiplexed passive optical networks; distance 30 km; gradient vector length; modified single-carrier frequency domain equalization; noise filtering; time-clipping technique; uncooled free-running vertical cavity surface emitting laser; wavelength 1550 nm; Frequency-domain analysis; Noise; Optical attenuators; Optical filters; Vectors; Vertical cavity surface emitting lasers; Wavelength division multiplexing; Intensity modulation and direct detection; inter-symbol interference; noise filtering; single-carrier frequency domain equalization; vertical cavity surface emitting laser; wavelength-division-multiplexed passive optical networks;

fLanguage

English

Journal_Title

Photonics Technology Letters, IEEE

Publisher

ieee

ISSN

1041-1135

Type

jour

DOI

10.1109/LPT.2013.2278203

Filename

6579719