Monish Chatterjee

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Traffic grooming schemes have attracted a lot of research attention for addressing the bandwidth mismatch between low data-rate user connection requests and a high capacity lightpath. Survivability of individual user connections is also highly important. The problem of survivable traffic grooming is known to be NP-Complete. In this paper we suggest(More)
Existing research has shown that the mode in which Routing and Wavelength Assignment (RWA) of lightpath requests are carried out can significantly affect resource consumption in optical WDM networks. The increase in resource consumption in turn directly affects the blocking probability for future lightpath requests. The RWA problem in all-optical networks(More)
Traffic grooming in WDM optical networks is a technique for aggregating many low-speed traffic streams from users onto a high-speed lightpath. In this scheme the objective of the network operator determines the grooming policy. Since traffic grooming problem in WDM mesh networks is NP-Complete, we propose a new polynomial-time static traffic grooming policy(More)
Traffic grooming in WDM optical networks is a scheme for aggregating several low-speed traffic streams from users onto a high-speed lightpath. In such networks, an optical fiber carries a large number of lightpaths and each individual lightpath carries the traffic of a large number of connection requests. So the failure of a single fiber-link, even for a(More)
Blocking probability has been one of the important parameters for performance analysis in the design of wavelength routed WDM networks. Existing research has proved that the way in which Routing and Wavelength Assignment (RWA) is carried out significantly affects wavelength conversion requirements, which directly affects the blocking performance. In this(More)
This paper addresses the problem of reducing congestion during logical topology design in de Bruijn WDM networks that can withstand the failure of a single physical link. Survivable routing of a logical topology ensures that the lightpaths are routed in a way that a single link failure does not disconnect the network. Survivable routing of the logical(More)
We discuss the design of an acousto-optic cell based free space optical communication link where the data beam is made secure through chaos encryption. Using external signal modulation of the diffracted light from a hybrid acousto-optic cell chaos (or directly via incorporation in the sound-cell driver's bias voltage) encryption of data is possible. We have(More)
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