As AI clusters grow larger, experts suggest communication issues may become the primary bottleneck affecting overall computational efficiency. Traditional electrical signal transmission faces challenges related to power consumption and bandwidth limitations, leading to growing interest in optical networking technology, which offers efficient data transfer and lower energy consumption. Major infrastructure providers like Broadcom and Marvell, along with specialized optical communication companies such as Lumentum and Coherent, are actively positioning in this market, with demand for their products expected to rise significantly as AI spending increases. While the optical networking market presents substantial opportunities, not all participants will succeed, requiring investors to carefully identify potential winners.