Highly reliable optical bidirectional path switched ring networks applicable to photonic IP networks

The reliability of the optical bidirectional path switched ring (OBPSR) network is studied by using optical networking equipment (ONE) with microelectromechanical system (MEMS)-based optical switching fabrics. The reliability of the wavelength path in OBPSR networks is shown to be highly dependent o...

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Bibliographic Details
Published in:Journal of lightwave technology 2003-02, Vol.21 (2), p.356-364
Main Authors: Hayashi, M., Ohara, K., Tanaka, H., Daikoku, M., Otani, T., Suzuki, M.
Format: Article
Language:English
Subjects:
Access methods and protocols, osi model
Applied sciences
Bidirectional
Couplers
Exact sciences and technology
Fabrics
Internet
Internet Protocol
IP (Internet Protocol)
IP networks
Microelectromechanical systems
Networks
Optical control
Optical fiber networks
Optical switches
Protection
Prototypes
Redundant
Switching
Switching and signalling
Switching theory
Systems, networks and services of telecommunications
Telecommunications
Telecommunications and information theory
Teleprocessing networks. Isdn
Wavelengths
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Summary:The reliability of the optical bidirectional path switched ring (OBPSR) network is studied by using optical networking equipment (ONE) with microelectromechanical system (MEMS)-based optical switching fabrics. The reliability of the wavelength path in OBPSR networks is shown to be highly dependent on redundant schemes of switching fabrics in the ONE. This study proposes a new redundant scheme utilizing optical couplers together with controlled switch fabrics without using active selectors, and shows that reliability of the wavelength path can be remarkably improved. A fast redundant switching operation of 10 ms was experimentally confirmed with a prototype of the ONE based on the proposed redundant switching fabrics. Furthermore, interworking operations in terms of the protection and restoration between the optical layer and the Internet protocol (IP) layer are experimentally investigated. In a 500-km optical ring network, fast wavelength path protection switching was confirmed without reconfiguring the link state database of the IP layer, and the measured protection time in the IP layer was as short as 21 ms.
ISSN:0733-8724
1558-2213
DOI:10.1109/JLT.2003.808785