TechPowerUp saw OCZ's Optical HSDL based IBIS XL enterprise solid state disk at CES 2011. Quite impressive specifications but obviously uber-expensive.
The new interface is said to provide gains in access times, IOPS, and bandwidth in general. Fiber-optic cable also allows for better cable management (since it's thinner and round compared to serial cables (such as SATA, SAS), it probably also allows the cables to be longer, to help connecting a number of drives in a rack with the drive cage being at a distance from the host machine. Internally, the IBIS XL 3.5-inch form-factor SSD is a RAID 0 on a stick of two SSD sub-units. It can store up to 4 TB of data, and provide transfer speeds of 1800 MB/s (read) and 1700 MB/s (write), with 200,000 IOPS 4K write performance.