You are a network engineer tasked with upgrading the network infrastructure of a medium$-$sized enterprise. The current setup involves a mix of copper and fiber optic connections, with an increasing demand for higher data throughput due to the company's expansion into data$-$intensive services.

You've decided to implement modular transceivers to provide the flexibility needed for future expansions and to support various connection types. One critical requirement is to ensure that the network can support connections to a newly installed storage area network $($SAN$)$ that operates over Fibre Channel for high$-$speed data access.

Which type of modular transceiver should you ensure is included in your upgrade plan to meet the specific requirement for connecting to the Fibre Channel SAN?