On Tuesday, certain optical communications stocks rose during early trading in the U.S. market. Applied Optoelectronics (AAOI.US) saw a significant increase of over 11% at one point. As of the latest update, the stock's gain has narrowed to 5.8%. Lumentum (LITE.US) briefly climbed more than 2%, reaching a new all-time high. POET Technologies (POET.US) advanced over 5%.