DocumentCode :
1106791
Title :
Optical path cross-connect node architectures for photonic transport network
Author :
Okamoto, Satoru ; Watanabe, Atsushi ; Sato, Ken-Ichi
Author_Institution :
NTT Opt. Network Syst. Labs., Kanagawa, Japan
Volume :
14
Issue :
6
fYear :
1996
fDate :
6/1/1996 12:00:00 AM
Firstpage :
1410
Lastpage :
1422
Abstract :
This paper explores the optical path cross-connect (OPXC) node architectures that are essential components of the optical path network. Optical path technologies will play a key role in the development of the platform on which the future bandwidth abundant B-ISDN should be created. This paper highlights the wavelength path (WP) and the virtual wavelength path (VWP) technologies, both of which can greatly enhance the path layer capability and the efficiency of network failure restoration. The OPXC, which handles optical paths, is constructed with an optical switching network. Various WDM-based switching networks, which are aimed at LAN applications, have been reported. On the other hand, few WDM-based switching networks for OPXC systems, which are applicable to the nationwide transport network, have been proposed. In this paper, we elucidate the functional conditions required to construct OPXC nodes for WP and VWP global networks. Next, we assess switching network architectures for their applicability to the transport network. It is shown that the OPXC architecture based on DC-switches (delivery and coupling switches) is superior to the other OPXC architectures in terms of optical losses, modularity, and upgradability. Finally, detailed evaluations of the DC-switch-based OPXC node are presented that confirm its feasibility
Keywords :
B-ISDN; LAN interconnection; optical fibre LAN; optical fibre losses; photonic switching systems; switching networks; telecommunication network reliability; wavelength division multiplexing; DC-switch-based OPXC node; DC-switches; LAN applications; WDM-based switching networks; future bandwidth abundant B-ISDN; network failure restoration; optical losses; optical path cross-connect node architectures; optical path network; optical path technologies; optical switching network; path layer capability; photonic transport network; switching network architectures; upgradability; virtual wavelength path; wavelength path; B-ISDN; Bandwidth; Local area networks; Optical coupling; Optical devices; Optical fiber networks; Optical signal processing; Optical switches; Wavelength division multiplexing; Wavelength routing;
fLanguage :
English
Journal_Title :
Lightwave Technology, Journal of
Publisher :
ieee
ISSN :
0733-8724
Type :
jour
DOI :
10.1109/50.511671
Filename :
511671
Link To Document :
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