Scalable Ultra-Wideband Sub-Nanosecond Wavelength Switching for Data Centre Networks

Published in Currently Under Peer Review, 2020

Recommended citation: T. Gerard, C. W. F. Parsonson, Z. Shabka, P. Bayvel, D. Lavery and G. Zervas, "Scalable Ultra-Wideband Sub-Nanosecond Wavelength Switching for Data Centre Networks," Currently Under Peer Review, May 2020

Abstract: Optical switching promises low power and latency networking for data centres, but requires a wideband, ultra-fast wavelength-tuneable source (WTS) at every node. We propose a hybrid WTS that uses two time-interleaved tuneable lasers, each gated by a semiconductor optical amplifier, where the performance of each device is optimised using artificial intelligence algorithms. We experimentally demonstrate a switching bandwidth of 6.05 THz (122×50 GHz) with stable switch times of 547 ps. The hybrid WTS scales well with respect to on-chip area and power consumption, and therefore constitutes the first demonstration of truly scalable ultra-fast optical switching.

Link to download will be provided when peer reviewed.