Architectures for WDM Benes Interconnection Network with Simultaneous Space-Wavelength Switching Capability
Dept. of Comput. Sci. & Eng., Univ. of Nebraska-Lincoln, USADOI: 10.1109/ICBN.2005.1589615 Conference: Broadband Networks, 2005. BroadNets 2005. 2nd International Conference on
Source: IEEE Xplore
In this paper, we present three switch architectures for WDM (Wavelength Division Multiplexing) Benes network that are based on wavelength exchange optical crossbar (WOC). A WOC is capable of performing a single-step space-switching wavelength-conversion between two wavelengths. A WOC can be implemented by the simultaneous power exchange between two optical signals. Unlike existing designs, the proposed architectures do not require separate stages of wavelength converters. This leads to a switch design that has a smaller total number of components as well as a smaller number of components in the signal path. Moreover, wavelength conversion is performed between two predefined and fixed wavelengths. This avoids the need for expensive full-range wavelength converters used in most of the existing designs. Systematic methods to realize switch architectures with an arbitrary number of wavelengths and fibers are given. The three architectures are evaluated and compared to existing architectures on the basis of hardware cost.
Conference Paper: A Novel Parametric WDM Interconnect Architecture with Reduced Complexity[Show abstract] [Hide abstract]
ABSTRACT: We present a new optical interconnect architecture that can be used in wavelength division multiplexing synchronous optical packet/burst switching networks. The proposed design uses parametric wavelength converters and wavelength exchange optical crossbars to reduce both switching and wavelength conversion complexity. Our design reduces both the number of wavelength converters as well as the number of space switches compared to most existing designs. We briefly present the architecture and enabling technologies. The main properties of the architecture are also discussedBroadband Networks, 2005. BroadNets 2005. 2nd International Conference on; 11/2005
Conference Paper: A New Scalable WDM Optical Interconnect Design with Reduced Complexity[Show abstract] [Hide abstract]
ABSTRACT: In this paper, we address the problem of designing wavelength division multiplexing (WDM) optical interconnects with reduced hardware complexity. We propose a new WDM optical interconnect design that reduces both the number of space switches and the cost of wavelength conversion. Wavelength conversion in the proposed design occurs between two pre-defined wavelengths, eliminating the need for expensive wide-range wavelength converters used in most existing designs. In addition, the proposed design follows the recursive structure of the Benes network, and hence, scalability occurs in an orderly fashion. A systematic method for developing interconnects with arbitrary number of wavelengths and fibers is given, and the main properties of the new design are analyzed and compared with existing designs. We show that, the new design requires the minimum number of switching stages and space switches compared to any existing WDM Benes interconnect. Moreover, our design has minimum wavelength conversion cost compared to most existing designs.Communications, 2006. ICC '06. IEEE International Conference on; 07/2006
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ABSTRACT: In this paper, we develop a new class of three-stage Clos-like wavelength division multiplexing (WDM) optical interconnects with reduced hardware cost and control complexity. A novel WDM crossbar switch is developed and is used as a building block for designing the proposed class of WDM interconnects. We parameterize the design space and give a complete characterization of the proposed class. Our analysis of the hardware design complexity shows that the proposed design compares favorably to most existing WDM interconnects. We also show that the proposed crossbar switch and the new class of WDM interconnects admit most existing routing algorithms with simple extensions.Broadband Communications, Networks and Systems, 2006. BROADNETS 2006. 3rd International Conference on; 11/2006
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