DTU Nanolaser: Halving Computer Energy consumption via Photonic Data Transmission

Lighting up the Chip

Researchers at the Technical University of Denmark (DTU) have developed a nanolaser small enough to be integrated into standard CMOS chip architectures...

Architecture & Implementation:

The breakthrough lies in the Indium Phosphide (InP) nanolaser integrated onto a silicon-on-insulator platform. * Optical Interconnects: Replacing electrical copper traces with photonic pathways within the CPU/GPU die. * Energy Reduction: Eliminating the Joule heating associated with moving electrons across resistive metal lines. * Data Speed: Supporting Terabit-per-second bandwidth between on-chip cache and logic cores.

Performance Benchmarks:

• Power Savings: 50% reduction in total chip energy consumption during high-load tasks.
• Size: <1 micrometer footprint, allowing for thousands of lasers on a single die.
• Thermal Profile: 30°C reduction in peak operating temperatures compared to electrical-only designs.