Application of super-DWDM technologies to terrestrial terabit transmission systems

Author

Suzuki, Hiro ; Fujiwara, Masamichi ; Iwatsuki, Katsumi

Author_Institution

Nippon Telegraph & Telephone, NTT Corp., Chiba, Japan

Volume

24

Issue

5

fYear

2006

fDate

5/1/2006 12:00:00 AM

Firstpage

1998

Lastpage

2005

Abstract

This paper describes application areas, elemental technologies, and the feasibility of terrestrial terabit wavelength division multiplexing (WDM) transmission systems based on super-dense wavelength division multiplexing (DWDM) technologies with a channel spacing of 12.5 GHz. Numerical simulation results quantitatively show that the merit of super-DWDM transmission is the elimination of the need for dispersion compensation over the several hundreds of kilometers of standard single-mode fiber (SMF). To support super-DWDM transmission, the prototype of a multiwavelength generator, which consists of just an intensity modulator and a phase modulator, is developed as a small-size WDM light source with high-wavelength stability. We use this prototype to conduct a 1.28-Tb/s (512 channels × 2.5 Gb/s) transmission experiment with a channel spacing of 12.5 GHz over 320 km (80 km × 4 span) of standard SMF without dispersion compensation. The potential and the feasibility of super-DWDM transmission with a channel spacing of 12.5 GHz for terrestrial systems is confirmed by the numerical simulation and the transmission experiment.

Keywords

channel spacing; optical communication equipment; optical fibre communication; optical modulation; phase modulation; wavelength division multiplexing; 1.28 Tbit/s; 12.5 GHz; 2.5 Gbit/s; 320 km; 80 km; WDM light source; channel spacing; dispersion compensation; high-wavelength stability; intensity modulator; multiwavelength generator; phase modulator; standard single mode fiber; super DWDM technologies; terrestrial terabit transmission systems; wavelength division multiplexing; Broadband amplifiers; Channel spacing; Numerical simulation; Optical fiber amplifiers; Optical fiber dispersion; Paper technology; Phase modulation; Prototypes; Stimulated emission; Wavelength division multiplexing; Chromatic dispersion; WDM; multi-wavelength generation; optical communication;

fLanguage

English

Journal_Title

Lightwave Technology, Journal of

Publisher

ieee

ISSN

0733-8724

Type

jour

DOI

10.1109/JLT.2006.871115

Filename

1632236