[U.S. optical communication stocks opened broadly lower, Corning down 9.43%, Marvell Technology down 8.60%] BlockBeats news, September 14, according to BIT (Bit.com) market data, U.S. optical communication stocks opened broadly lower, including: Lumentum down 7.72%, Corning down 9.43%, Coherent down 7.78%, Applied Optoelectronics down 8.20%, Ciena down 7.33%, Broadcom down 3.65%, Marvell Technology down 8.60%.