Ciena (CIEN) may not be the first stock investors think of when AI comes up. But it could become one of the more interesting ways to play the boom. The company is benefiting from surging demand for the optical connectivity that links increasingly powerful data centers, creating a growth opportunity that may last well beyond the current AI cycle. Ciena stock has climbed roughly 34% so far in 2026. But according to Wall Street, if AI spending keeps accelerating, CIEN stock could double to reach $660.