InPHRED's Strategic Entry into Data Center Optical Interconnect Solutions

InPHRED's Strategic Expansion into Optical Interconnects

InPHRED, a pioneering company in next-generation photonics solutions, has officially entered the data center optical interconnect market. This bold move reflects the rising demand for innovative high-speed connectivity solutions, particularly in the context of next-generation AI infrastructure. By extending its nanoporous semiconductor platform, InPHRED aims to improve optical input/output (I/O) systems that bridge the gap between advanced compute packages and the required data transfer capabilities.

The Growing Need for Optical I/O in AI Infrastructure

As the landscape of artificial intelligence (AI) rapidly evolves, the infrastructure supporting AI has begun to encounter significant challenges. Hyperscalers—massive data centers that provide vast amounts of compute resources—are demanding higher bandwidth density and lower power consumption. Given this backdrop, optical I/O has evolved to address two critical design questions: the proximity of the optical engine to the application-specific integrated circuit (ASIC) and the required distance for data transmission.

In the industry, several architectural approaches have emerged, including mid-board optics (MBO), near-packaged optics (NPO), and co-packaged optics (CPO). These architectures aim to reduce the electrical distance between ASICs and optical engines, thereby enhancing signal integrity and minimizing power usage. Depending on the required data transfer distances, various forms of optical links are deployed—from copper and active electrical links for the shortest ranges to multimode fiber for short-distance connections and single-mode fiber for longer distances within data centers.

InPHRED's Innovative Optical Interconnect Strategy

InPHRED's strategy for optical interconnects emphasizes two complementary approaches: focusing on ultra-short-reach optical I/O and longer intra-data-center links. For ultra-short-reach applications, InPHRED's GaN micro-Resonant Cavity LED (μRC-LED) aims to facilitate chip-to-chip communication near advanced compute packages. The key goal here is to transition from legacy copper solutions to more compact and energy-efficient optical engines.

Conversely, InPHRED's 1310 nm InP VCSEL roadmap is designed for single-mode optical engines that can be utilized in MBO or NPO frameworks. This focus supports connections within racks and between adjacent racks, where robustness under high-temperature conditions, direct-drive operation, and system simplification are essential.

The Future Milestones Ahead

With an eye on the future, InPHRED has set ambitious benchmarks. By the first quarter of 2027, the company plans to unveil significant demonstration milestones across both technology pathways. For the μRC-LED optical I/O, InPHRED is targeting a 200-lane array architecture with a numerical aperture of 0.3 placed on sapphire, striving for high channel counts while minimizing microlens coupling complexities. Initial performance goals include achieving a coupling loss of below 3 dB and a system energy efficiency of just 4 pJ/bit.

On the 1310 nm VCSEL interconnect side, InPHRED aims for the demonstration of a 32-channel optical engine capable of 50 Gbps per lane, which is intended as a foundational building block for multi-engine configurations encircling ASICs to decrease the distance electrical signals must travel. Noteworthy targets will include case temperatures reaching up to 120–150 °C and fiber-coupling losses below 2 dB per channel.

Embracing a Diverse Optical Future

As the challenges of electrical I/O loss, thermal loading, and bandwidth density become more pronounced in AI infrastructure, InPHRED is confident that a variety of optical solutions will coexist, each tailored to different reach requirements and system architectures. By enhancing its nanoporous semiconductor platform to include both InP VCSEL and micro-RC-LED technologies, InPHRED is strategically positioning itself in a competitive market, focusing on ultra-short-reach optical I/O as well as longer-range solutions vital for data center connectivity.

About InPHRED

InPHRED is at the forefront of semiconductor innovation, commercializing solutions developed from technology at Yale University. Their diverse product offerings feature SWIR VCSELs and Resonant Cavity Light-Emitting Diodes (RC-LEDs), which cater to a variety of applications related to sensing, digital health, and high-speed connectivity.

Representatives from InPHRED will be present at the upcoming CS International conference from April 20-22 in Brussels, Belgium. Those interested in scheduling meetings or learning more are encouraged to reach out to the company through their official contact channels.