Executive Brief
OptiHK Limited is a high-growth silicon photonics fabless design house specializing in high-bandwidth interconnects (3.2T engines) and Co-Packaged Optics (CPO) for the AI and data center markets. Their core challenge involves managing extreme power densities and maintaining signal integrity in increasingly compact, high-performance "system-on-chip" photonic modules and spectrometers.
Strategic Fit & Lead Score
Lead Score: 92/100
Why this Score? OptiHK's primary product, Co-Packaged Optics (CPO) for AI chips, represents the most significant thermal bottleneck in modern computing. As they push toward 3.2T data rates, the heat generated by the electronic-photonic interface exceeds the cooling capacity of traditional copper or silicon substrates. 6C’s Diamond Technology is the industry-standard "ultimate heat sink" to enable the power densities OptiHK is targeting. Furthermore, their work in OCT and metrology could benefit from diamond’s unmatched optical transparency and refractive index.
6C Solutions Proposal
| Application Area | 6C Solution | Technical Value Prop |
|---|---|---|
| CPO Thermal Management | PCD Heat Spreaders (Thermal Grade) | Diamond's thermal conductivity (>2000 W/mK) is 5x that of copper. Placing 6C PCD under the 3.2T engine eliminates thermal throttling in AI clusters. |
| Direct Si-Photonics Integration | Diamond-on-Silicon CVD Coating | We can deposit thin-film diamond directly onto Si wafers or passive components to provide localized cooling for high-power laser sources (DFB/Comb lasers). |
| Optical Metrology & OCT | SCD/PCD Optical Windows | For their on-chip spectrometers and OCT systems, diamond offers a wide transparency window (UV to Far-IR) and high chemical inertness for bio-sensing. |
| Active Device Cooling | SCD (Single Crystal) Substrates | For high-performance R&D, replacing silicon-on-insulator (SOI) with silicon-on-diamond (SOD) can reduce junction temperatures by >30°C. |
| In-house Prototyping | Custom MPCVD Reactor Build | Enable OptiHK or their CUHK research partners to develop proprietary Diamond-Silicon hybrid processes using a turnkey 6C reactor system. |
Engagement Hooks
- Technical Question: "As OptiHK scales to 3.2T silicon photonic engines, how are you addressing the 'thermal wall' associated with the dense integration of PICs and ASICs in Co-Packaged Optics, and have you benchmarked the Tjunction reduction afforded by synthetic diamond heat spreaders?"
- Value Statement: "6C can help OptiHK bypass the thermal limitations of traditional silicon packaging by integrating PCD heat spreaders that offer thermal conductivity up to 2200 W/mK, ensuring your 3.2T modules maintain peak performance without throttling."