Dynamic sub-second restoration in WDM optical transport networks

• Published in: 1998 IEEE/LEOS Summer Topical Meeting. Digest. Broadband Optical Networks and Technologies: An Emerging Reality. Optical MEMS. Smart Pixels. Organic Optics and Optoelectronics (Cat. No.98TH8369) pp. I/33 - I/34
• Main Authors: Jagannathan, R., Alagar, S., Garnot, M., Masetti, F.
• Format: Conference Proceeding
• Language: English
• Published: IEEE 1998
• Subjects: Bandwidth; Capacity planning; Intelligent networks; Optical design; Optical fiber networks; SONET; Telecommunication traffic; Wavelength division multiplexing; WDM networks; Writing
• DOI: 10.1109/LEOSST.1998.689700
• ISBN: 0780349539; 9780780349537

The deployment of WDM networks enables a fiber to provide a huge bandwidth several factors above the current levels. Considering the enormous amount of information carried by a fiber in WDM networks, restoring traffic disrupted by a fiber/cable cut is even more critical than the SONET network. This paper provides a summary of results of our spare capacity planning and distributed restoration schemes on two networks. The restoration scheme is a distributed path restoration algorithm. The spare capacity planning was efficient and the distributed restoration algorithm restored 100% within a second for single link failures. The results show that sub-second distributed restoration is possible in WDM networks.