Access and metro networks based on WDM technologies

Author

Iwatsuki, Katsumi ; Kani, Jun-ichi ; Suzuki, Hiro ; Fujiwara, Masamichi

Author_Institution

NTT Access Network Service Syst. Labs., NTT Corp., Chiba, Japan

Volume

22

Issue

11

fYear

2004

Firstpage

2623

Lastpage

2630

Abstract

This paper describes the technical issues of access and metro networks based on wavelength division multiplexing (WDM) technologies, some solutions, and an experimental demonstration. A WDM star access network with colorless optical network units (ONUs) is proposed. For realizing the colorless ONU, two approaches are introduced; optical carrier supply and spectrum slicing. In addition, a WDM metro ring network with scalable optical add/drop multiplexers (OADMs), namely the tapped-type OADM, is proposed to effectively accommodate the large amount of traffic issued from access networks. Prototypes are constructed and used to verify the feasibility of the proposed WDM technologies.

Keywords

multiplexing equipment; optical fibre subscriber loops; telecommunication traffic; wavelength division multiplexing; OADM; WDM technologies; access network; colorless optical network units; metro network; metro ring network; optical add/drop multiplexers; optical carrier supply; spectrum splicing; telecommunication traffic; wavelength division multiplexing; Network topology; Optical add-drop multiplexers; Optical fiber networks; Optical modulation; Optical network units; Paper technology; Passive optical networks; Time division multiplexing; WDM networks; Wavelength division multiplexing; 65; OADM; Optical add/drop multiplexing; PON; WDM; passive optical network; wavelength-division multiplexing;

fLanguage

English

Journal_Title

Lightwave Technology, Journal of

Publisher

ieee

ISSN

0733-8724

Type

jour

DOI

10.1109/JLT.2004.834492

Filename

1353394