Monish Chatterjee

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Electrocardiography (ECG) signals are used for both medical purposes and identifying individuals. It is often necessary to encrypt this highly sensitive information before it is transmitted over any channel. A closed-loop acousto-optic hybrid device acting as a chaotic modulator is applied to ECG signals to achieve this encryption. Recently improved(More)
A novel technique involving nonlinear dependent sources expressed as convergent power series expansions of one or more variables representing the output fields of a Bragg-domain hybrid acousto-optic device with feedback is presented. Using some straightforward modifications of a basic circuit prototype, we show how optical bistability, possible(More)
Recent research work reveals that the performance of translucent optical network is very near to fully opaque network but much better than transparent network in terms of cost and overall blocking. A translucent optical network is capable to reduce the network design cost as well as routing cost by dividing each light-path into one or limited number of(More)
An important parameter for performance analysis of Routing and Wavelength Assignment (RWA) strategies in WDM networks is blocking probability. Past research has shown that the process in which RWA is carried out significantly affects the wavelength conversion requirements, which in turn affects blocking probability. In this paper we propose a new strategy(More)
A pixelated holographic stereogram is proposed and experimentally studied for the emulation of a spatially multiplexed composite three-dimensional (3-D) pixel display. With this approach, pixelated holograms are utilized to compose spatially multiplexed images. Each composite pixel in the holographic optical element array has a diffraction pattern that(More)
A detailed examination of the nonlinear dynamical behavior of an acousto-optic Bragg cell in the near-Bragg regime of operation for the case of four scattered orders under intensity feedback is carried out. This problem is an extension of the standard ideal-Bragg feedback model whereby traditionally bistability, hysteresis, and chaotic oscillations are(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)
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)