MediaTek, one of the most prominent manufacturers of mobile-focused APs and an emerging player in the AI sphere, especially via its dedicated role in the production of Google's TPUs, has tapped a bold new frontier in semiconductor tech by taking a material stake in the silicon photonics-focused startup, Ayar Labs.
MediaTek's stake in Ayar Labs indicates its intentions of incorporating silicon photonics elements within its products
MediaTek has invested around $90 million in Ayar Labs via its subsidiary, Digimoc Holdings Limited. This transaction has allowed the manufacturer of mobile chips to acquire a 2.4 percent stake in the silicon photonics-focused startup via 1.72 million special shares.
Do note that NVIDIA, Intel, and AMD have all invested in Ayar Labs. As such, MediaTek's investment in the startup indicates its desire to procure a proverbial seat at the table as silicon photonics continues to evolve from a frontier concept into a viable framework for next-gen chip fabrication.
How does MediaTek benefit?
For the benefit of those who might not be aware, silicon photonics aims to integrate optical functions - such as light generation, modulation, and detection - directly onto silicon substrates alongside traditional electronic circuits.
The technology uses waveguides to force infrared light to traverse a specific path, thereby creating a photonic circuit. As light-based signals are faster than electric ones, with the added benefit of generating little to no heat, the technology results in higher bandwidth, lower latency, and significantly lower energy consumption when it comes to transmitting packets of data.
As for Ayar Labs, the startup specializes in creating optical I/O (input/output) solutions to replace traditional copper-based electrical interconnects between computer chips. The technology has massive ramifications not just for AI data centers but also for mobile-focused APs, which is still MediaTek's dominant business.
MediaTek is already handling the design of I/O modules for Google's TPUv7. And, photonic I/O modules have wide-ranging applications not just for AI ASICs but also mobile APs, where such modules can replace traditional electrical SerDes (Serializer/Deserializer) with optical links, reducing I/O power consumption by as much as 80 percent, while unlocking higher data throughputs for edge AI and the oncoming 6G-based cellular connectivity.
Another application of silicon photonics lies in Co-Packaged Optics (CPO), where optical engines are integrated directly within the SoC package to shorten electrical traces, minimizing latency and heat generation in the process. In fact, TSMC is already working on its COUPE (COmpact Universal Photonic Engine) platform, which is a frontier packaging technology that aims to integrate electronic and photonic circuits within a single CPO module.
About the author: Writing is my one incontrovertible passion. Over the past six years, he has authored over 2,200 distinct articles on financial and tech-related topics, spanning nearly 1 million words. And he has been a member of Wcctech mobile team since 2025. As an alumnus of the University of Toronto, Rotman Commerce Program, I bring nuance, in-depth knowledge, and a unique perspective to every topic that I cover. When I'm not writing, I'm traveling the world, exploring hidden confectionaries and restaurants as an aspiring food connoisseur.
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