The optical communication sector faced a broad sell-off on Tuesday, with major players across the industry posting significant losses. Astera Labs, Inc. led the decline, plunging more than 11%, while Credo Technology Group Holding Ltd dropped over 10%. Coherent fell by more than 8%, and both Corning and Applied Optoelectronics slid over 7%. Meanwhile, Lumentum, Ciena, and Nokia Oyj each declined by more than 5% as the sector-wide downturn weighed on investor sentiment.