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Method of state code matrixes in the realization of optical switching using Perfect Shuffle
Authors:Haixuan Huang  Jing Yang  Xiangdong Gong  Lili Wan  Kai Wang  Yeyong Zheng  Xuan Han
Affiliation:College of Electronic Science and Technology, Shenzhen University, Shenzhen, Guangdong 518060, China
Abstract:Based on the Left Perfect Shuffle (LPS) optical communication network constructed by cascade multi-stage LPS interconnection, using Looping algorithm, any arbitrary sequence of the input signals can be realized. However, instead of obtaining the simultaneous state codes of the same level node switches through mathematical analytical expressions directly, only routing tags of each channel can be obtained through mathematical analytical expressions so as to draw out topological chart of the network to obtain the state codes implied in the chart. Thus, the states of the switches cannot be directly programmed and controlled by computer in practical application. In this paper, based on the Looping algorithm, a method of stage code matrixes is presented to resolve this problem. By using the method, the simultaneous state codes of the same level’s four node switches can be directly obtained, which is convenient for the computer to provide controlled signals needed to finish the permutation for each node switch. The method of stage code matrixes provides further theoretical basis for the realization of optical switching by integration of Perfect Shuffle and high-speed optical switches.
Keywords:Optical communications   Optical switching
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