Although WDM-based single-hop star networks are attractive owingto their all-optical communication features, the throughput of suchlightwave networks is limited due to the small number of availablewavelengths. In this paper, a wavelength-reusable local lightwavenetwork which consists of interconnected WDM star networks is proposed.Based on this architecture, the lower bound for the problems ofminimizing the switching duration is derived. A transmission schedulingalgorithm for this architecture to efficiently reuse the wavelengths isalso proposed. The analytical result shows that the proposed schedulingalgorithm always produces solutions no greater than twice of the lowerbounds. Simulation results show that given the same number of users andavailable wavelengths, the solutions (in terms of the average switchingduration and the average number of switching matrices) obtained by theproposed scheduling algorithm on the interconnected WDM networks arebetter than the optimal solution on a single-star WDM network. In mostcases, the performance improvement achieves 20% to 45%
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