All-optical four-fiber bidirectional line-switched ring

Author

Fang, Xiaojun ; Iraschko, Rainer ; Sharma, Rohit

Author_Institution

Sprint Advanced Technol. Labs., Burlingame, CA, USA

Volume

17

Issue

8

fYear

1999

fDate

8/1/1999 12:00:00 AM

Firstpage

1302

Lastpage

1308

Abstract

An all-optical four-fiber bidirectional line-switched ring (O-4F/BLSR) architecture is proposed. This new physical layer networking protocol uses wavelengths as tributaries and an optical supervisory channel to carry overhead information. Optical channels can be added and dropped from the ring, and virtual wavelength paths can be provisioned. Both node and link failures of a network can be protected through a two layer protection scheme. Protection switching within the optical multiplex section layer (OMS) restores failure caused by loss of optical continuity in a way similar to the SONET 4F/BLSR line switching. Protection switching within the optical channel layer restores single channel failure using 1:N protection. Test results show that the O-4F/BLSR can restore traffic in less than 50 ms. A self-healing, bandwidth efficient, and scalable all-optical transport network evolving from this O-4F/BLSR architecture is possible

Keywords

optical fibre networks; telecommunication channels; telecommunication network reliability; telecommunication traffic; transport protocols; 1:N protection; O-4F/BLSR architecture; SONET 4F/BLSR line switching; all-optical four-fiber bidirectional line-switched ring; layer protection scheme; link failures; node failures; optical channels; optical continuity; optical multiplex section layer; optical supervisory channel; overhead information; physical layer networking protocol; protection switching; self-healing bandwidth efficient scalable all-optical transport network; single channel failure; telecommunication traffic restoration; virtual wavelength paths; Optical fiber cables; Optical fiber devices; Optical fiber networks; Physical layer; Protection; Protocols; SONET; Switches; Telecommunication traffic; Wavelength division multiplexing;

fLanguage

English

Journal_Title

Lightwave Technology, Journal of

Publisher

ieee

ISSN

0733-8724

Type

jour

DOI

10.1109/50.779150

Filename

779150