In-Vehicle Optical Communication Gains Momentum as Multiple Firms Target Billion-Dollar Automotive Market

As the electrification and intelligentization of new energy vehicles accelerate, in-vehicle optical communication technology is transitioning from conceptual exploration to a critical phase of product implementation and ecosystem development. Recently, several leading optical communication companies have stepped up their automotive sector strategies: Hengtong Optic-Electric has launched a comprehensive in-vehicle fiber-optic communication solution supporting ultra-high-speed transmission exceeding 10 Gb/s—offering tens of times more bandwidth than traditional copper cables; Accelink Technologies stated it has proactively positioned itself in emerging optoelectronic segments such as in-vehicle optical communications to cultivate a second growth curve; and HG Tech unveiled its in-vehicle Ethernet high-speed optical module for the first time at the recent "Optics Expo," achieving microsecond-level ultra-low latency transmission. Behind this industry acceleration are anticipated regulatory approvals for L3-level autonomous driving and the rapid adoption of intelligent cockpits and advanced driver-assistance features. Conventional automotive copper cables are increasingly hitting performance limits in terms of bandwidth, electromagnetic interference resistance, and weight reduction, making them inadequate for the high-bandwidth communication demands of next-generation electronic/electrical architectures (EEA). Optical fiber, with its advantages of high bandwidth, low latency, strong immunity to interference, and lightweight properties, is now widely regarded as the key infrastructure to address the automotive "bandwidth crisis." Industry consensus has shifted from "whether to adopt optical communication" to "how to implement it in vehicles," and the trend of "fiber replacing copper"—long established in the telecommunications sector—is now extending into the automotive industry.