The need for small, dense fiber connections are crucial to efficient data center design. Parallel processing, as well as the need for high-bandwidth, low-latency transmission that’s crucial for AI data centers means doing more with fiber than might otherwise be acceptable. AI data center applications call for very small, flexible, bend-safe fiber. These demands are likely to increase as AI goes from nice-to-have to crucial technology underlying the fabric of modern civilization. Fiber technology and data center experts explain the latest innovations making fiber density a solvable problem.