CST – Computer Simulation Technology

On-Chip Wireless Optical Broadcast Interconnection Network
Hongyu Zhou, Zheng Li, Li Shang, Alan Mickelson, Dejan S. Filipovic
Journal of Lightwave Technology
Volume: 28, Issue: 24, 15 Dec. 2010
3569 - 3577
Multicore interconnection, on-chip broadcast, optical antenna, silicon-on-insulator (SOI) wafer, silicon photonics
An on-chip wireless optical broadcast network for future multicore CPU interconnections is introduced in this paper. A baseline topology is composed of 32 identical transmitting/receiving optical dielectric rod antennas arranged around a circular ring. To ensure balanced power distribution between the channels, the optical antenna design was governed by the antennas’ far-field radiation pattern and near-field coupling. Over the frequency range of 172 THz (1750 nm) and 222 THz (1350 nm), the broadcasting network has average and minimum transmissions of ?? and ??  dB, respectively. The overall transmission efficiency is maintained above 70% throughout the operating bandwidth. Results are confirmed by the full-wave simulations based on finite integration and finite element methods. For additional validation, an eight-channel microwave broadcasting network is fabricated, and excellent agreement between the full-wave design and measurements are obtained.

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