Foxconn unit ShunSin confirms TSMC COUPE partnership; capex to hit NT$5 billion for CPO and OCS

ShunSin’s appointment of a former TSMC executive and its NT$5 billion bet on CPO represent Foxconn’s strategic thrust into the AI compute arms race. This move will catalyze co-optimization across silicon photonics, high-speed SerDes, and advanced packaging, pressuring upstream suppliers to accelerate low-loss waveguide and thermal solutions. Compliance risks loom large: CPO relies on U.S.-origin EDA tools and laser components subject to export controls; any escalation in U.S.-China tech decoupling could disrupt its capex execution. Rivals like ASE and SPIL will likely fast-track OCS initiatives or partner with Intel/Broadcom to build alternative ecosystems. Over the next 18 months, CPO won’t replace pluggable optics at scale but will dominate hyperscaler ‘premium islands’—only firms tightly integrated with foundry platforms like TSMC COUPE will capture early value, leaving standalone OSATs increasingly marginalized.