Coherent Demos InP Technology Innovation at OFC

Why It Matters

InP’s superior bandwidth and efficiency enable data‑center operators to meet exploding AI workloads, while Coherent’s scaling production safeguards component availability for next‑generation optical systems.

Key Takeaways

• Coherent showcases extensive InP laser, modulator, photodiode portfolio.
• 400 mW CW laser targets co‑packaged optics and silicon photonics.
• 200 G EML enables 1.6 Tbps transceivers; D‑EML supports 400 G/lane.
• 800 G and 1.6 Tbps IQ modulators address scale‑across applications.
• 6‑inch InP fabs expanded in Sweden, USA, Switzerland for continuity.

Pulse Analysis

Artificial intelligence workloads are pushing data‑center traffic beyond 400 Gbps per lane, forcing operators to seek optical solutions that combine raw speed with low power consumption. Indium phosphide, with its direct‑bandgap and high electron mobility, remains the material of choice for such high‑performance photonic devices. By leveraging InP’s intrinsic advantages, manufacturers can deliver lasers and modulators that operate at higher frequencies while maintaining energy efficiency, a critical factor as operators balance performance against rising electricity costs.

Coherent’s latest InP lineup reflects this market pressure. Its 400 mW continuous‑wave laser is engineered for co‑packaged optics, enabling tighter integration with silicon photonics and reducing loss in the optical path. The 200 G electro‑absorption‑modulated laser (EML) and differential EML variants support 1.6‑terabit transceivers and 400 G per lane, respectively, positioning Coherent to supply both emerging pluggable standards and legacy modules. Complementary high‑speed photodiodes and nano‑integrated tunable laser assemblies extend the portfolio’s reach across scale‑out, scale‑up, and scale‑across architectures, offering operators a single source for end‑to‑end optical subsystems.

Beyond product innovation, Coherent’s decision to ramp 6‑inch InP wafer production across facilities in Sweden, the United States and Switzerland addresses a growing supply‑chain concern. Larger wafer sizes improve yield and reduce unit cost, while geographic diversification mitigates geopolitical risk. As AI‑driven traffic continues to surge, the industry will likely see intensified competition among InP suppliers, making Coherent’s expanded capacity a strategic advantage that could shape the next wave of data‑center optical deployments.