HyperLight, a Cambridge, Massachusetts-based provider of high-performance photonic integrated circuits on its TFLN Chiplet platform, has raised $80 million in Series C funding led by MediaTek. The company delivers ultra-high bandwidth optical transmitters using thin-film lithium niobate technology for AI data centers and telecom networks. The capital will scale manufacturing and customer qualification for next-generation interconnects.
AI Infrastructure Fuels Photonics Demand
The round arrives as hyperscale operators confront bandwidth and power constraints in AI clusters. Ayar Labs raised $155M Series D in December 2024 to advance optical I/O solutions. HyperLight differentiates by offering a modular TFLN platform that unifies IMDD, coherent, and co-packaged optics architectures on a single foundry line.
Copper Hits Limits at AI Speeds
Traditional electrical interconnects cannot sustain the 3.2T and higher data rates required by large AI models without prohibitive power draw. Current silicon photonics solutions struggle with drive voltage and bandwidth beyond 200 Gbps per lane. HyperLight's TFLN approach leverages the Pockels effect for CMOS-level voltages and over 110 GHz bandwidth.
TFLN Chiplet Unifies Optical Architectures
The TFLN Chiplet platform supports 200 Gbps per lane products in volume production and 400 Gbps per lane solutions now sampling. It delivers up to 145 GHz electro-optic bandwidth while consuming far less power than alternatives. A strategic manufacturing partnership with UMC and Wavetek enables high-volume output on 6-inch and 8-inch wafers.
As CEO Mian Zhang noted:
"This financing is about more than capital — it is about ecosystem alignment. AI infrastructure requires optical interconnects that can deliver higher bandwidth, lower power, and manufacturing scale across pluggable optics and co-packaged optics."
Strategic Investors Signal Supply-Chain Bet
MediaTek led the round, joined by UMC Capital, Jabil, Foxconn, EDBI, CDIB-TEN Capital, and Qatar Investment Authority. Existing backers including Summit Partners also participated. The investor mix spans chip design, foundry, and contract manufacturing, validating TFLN as a drop-in upgrade for existing transceiver supply chains.
Photonics Market Expands with AI Scale
The co-packaged optics market stood at $95.04 million in 2025 and is projected to grow at roughly 30.66% CAGR through 2034. TFLN modulator demand is rising at 44.4% CAGR through 2032 as data centers seek higher efficiency. HyperLight holds over 70 patents and ISO 9001:2015 certification, positioning it ahead of competitors such as Liobate Technologies and Advanced Fiber Resources in Western market traction.
The company's 400 Gbps-per-lane PICs and partnerships with Broadcom and Eoptolink underscore readiness for 1.6T and 3.2T deployments expected through 2030.