近年來長距離(Long-Reach)光纖接取技術已被視為一個兼具成本考量及提升網路效能之接取網路解決方案，因為此技術能藉由結合接取網路與都會網路達到簡化網路的效果。在本篇論文中提出了一套基於陣列式波導光柵的時槽式長距離被動光纖網路系統。透過使用陣列式波導光柵，本論文所設計之系統架構具有波長重覆再利用的特性，並且提供位於各個不同本地接取網路中的光網路單元之間交互溝通的能力。除此之外，本論文也在此系統架構下，提出一套時槽式的介質控制存取通訊協定，用以仲裁各個不同光網路單元間使用分波多工頻道的存取資格，使各個光網路單元在使用上傳頻道進行傳輸時，不會發生資料碰撞導致丟失。最後，透過電腦模擬得到的結果印證本論文所提出的時槽式長距離被動光纖網路系統搭配本論文為其設計之通訊協定的整合運用，能夠有效提升整體網路中的頻寬使用率，也明顯的減少封包在光網路單元中等待傳輸的時間。

Long-reach optical access technologies have emerged as a promising solution for combining access and metro backhaul networks in a cost-effective manner. This thesis develops a slotted PON architecture based upon an AWG for long-reach optical access networks. The AWG enables the SPON to achieve wavelength spatial-reuse and to provide an internetworking capability amongst ONUs located within different local access networks. In addition, a Slotted MAC protocol is proposed to arbitrate the access of the individual ONUs over the DWDM layer. The simulation results show that the slotted PON architecture integrated with the proposed MAC protocol enhances the bandwidth utilization within the network, and therefore achieve a significant reduction in the average packet delay.

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