Ultra-Efficient CMOS Fiber-to-Chip Grating Couplers

Apodized bi-level fiber-to-chip grating couplers, designed using a complex-wavevector band-structure approach, are demonstrated in a commercially available, monolithic SOI CMOS process achieving 92% (−0.36dB) coupling efficiency.

Single-Chip Microprocessor That Communicates Directly Using Light

This demonstration could represent the beginning of an era of chip-scale electronic–photonic systems with the potential to transform computing system architectures, enabling more powerful computers, from network infrastructure to data centres and supercomputers.

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