Reliable wide-area wavelength division multiplexing passive optical network accommodating gigabit ethernet and 10-Gb ethernet services

Author

Nakamura, Hirotaka ; Suzuki, Hiro ; Kani, Jun-ichi ; Iwatsuki, Katsumi

Author_Institution

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

Volume

24

Issue

5

fYear

2006

fDate

5/1/2006 12:00:00 AM

Firstpage

2045

Lastpage

2051

Abstract

This paper proposes and demonstrates a reliable wide-area wavelength-division-multiplexing passive optical network (WDM-PON) with a wavelength-shifted protection scheme. This protection scheme utilizes the cyclic property of 2×N athermal arrayed-waveguide grating and two kinds of wavelength allocations, each of which is assigned for working and protection, respectively. Compared with conventional protection schemes, this scheme does not need a 3-dB optical coupler, thus leading to ensure the large loss budget that is suited for wide-area WDM-PONs. It also features a passive access node and does not have a protection function in the optical network unit (ONU). The feasibility of the proposed scheme is experimentally confirmed by the carrier-distributed WDM-PON with gigabit Ethernet interface (GbE-IF) and 10-GbE-IF, in which the ONU does not employ a light source, and all wavelengths for upstream signals are centralized and distributed from the central office.

Keywords

arrayed waveguide gratings; optical fibre LAN; optical fibre losses; telecommunication network reliability; telecommunication security; telecommunication services; wavelength division multiplexing; 10 Gbit; 10-Gb Ethernet services; athermal arrayed-waveguide grating; carrier-distributed optical network; gigabit Ethernet; optical loss budget; optical network unit; passive access node; passive optical network; reliable optical network; upstream signals; wavelength allocations; wavelength-shifted protection scheme; wide-area wavelength division multiplexing; Central office; Ethernet networks; Gratings; Light sources; Optical coupling; Optical losses; Optical network units; Passive optical networks; Protection; Wavelength division multiplexing; Passive optical network; protection; wavelength division multiplexing;

fLanguage

English

Journal_Title

Lightwave Technology, Journal of

Publisher

ieee

ISSN

0733-8724

Type

jour

DOI

10.1109/JLT.2006.871057

Filename

1632241