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Single-hop WDM networks were extensively studied in the past decade. In previous research, the common configuration of a single-hop WDM network is a LAN whose nodes can communicates with each other directly via a passive star coupler (PSC). Each node is equipped with a pair of transceiver for data transmission/reception. However, such architecture severely suffers from that the maximum achievable bandwidth for any node at any time, and is limited by bandwidth of a single channel.
With the rapid advance in optical component development, the Vertical Cavity Surface Emitting Laser (VCSEL) based transceiver array technology is mature, of low cast, and widely deployed in many optical single-hop communication environments. The transceiver array enables nodes to transmit/receive data on all data channels parallely and simultaneously. Since there transceiver array has fixed transceiver over each data channel, there is no tuning required. The packet delay can get rid of the considerable transceiver tuning latency.
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Problems in traditional single-hop WDM networks
