In the dynamic landscape of data centers, the demand for greater bandwidth and extended reach is rapidly increasing. As shown in the figure below, we can think about three categories of data center interconnects based on their reach
Intra-data center interconnects (< 2km)
Campus data center interconnects (<10km)
Metro data center interconnects (<100km)
Coherent optical technology has already established itself as the go-to solution for interconnecting data centers over long distances in metro areas.
However, within the confines of data centers themselves, intensity-modulated direct detect (IM-DD) technology remains dominant. Recognizing the limitations of IM-DD in meeting evolving requirements, the industry is exploring “Coherent Lite” solutions—a simplified implementation of coherent technology designed specifically for shorter-reach data center connections.
This article delves into the concept of coherent lite technology and its potential to address the escalating bandwidth demands within data centers.
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