➀ The adoption of OCS optical switching in AI data centers can significantly reduce power consumption, costs, and latency, but the market is still in its early stages with great uncertainty in its development trend.

➁ Google's OCS structure for AI is simpler compared to the unblockable WSS optical switching in trunk ROADM, but it is a blocking structure that requires overall port traffic switching.

➂ The choice of OCS type for AI reconstruction depends on the requirements for reconstruction speed and scale. Larger mechanical structures can be used for large-scale exchange without high-speed requirements, while smaller arrays of MEMS, liquid crystal, or piezoelectric technologies can be chosen for lower-scale applications.