WDM-Based Silicon Photonic Multi-Socket Interconnect Architecture With Automated Wavelength and Thermal Drift Compensation

• DOI: 10.1109/jlt.2020.3008001
• Publication Date: 2020-07-08T20:21:56Z
• Authors: Francesco Zanetto; Vittorio Grimaldi; Miltiadis Moralis...; Stelios Pitris; Konstantinos Foti...; Theonitsa Alexoudi; Emanuele Guglielmi; Douglas Aguiar; Peter De Heyn; Yoojin Ban; Joris Van Campenhout; Nikos Pleros; Giorgio Ferrari; Marco Sampietro; Andrea Melloni
• Keywords: Gigabit; Robustness; Optical interconnect

A silicon photonic circuit comprising all the building blocks necessary to demonstrate optical communication between two sockets interconnected through an Arrayed Waveguide Grating Router (AWGR) is reported. The article focuses on robustness of interconnection scheme unavoidable wavelength and thermal fluctuations observed in real datacenter environments. To improve reliability system, a feedback control mechanism, based contactless integrated probes (CLIPP) heater actuators, added monitor parallel working point each sensitive device keep it locked real-time. Experimental results successful operations 30 Gbit/s data routing scenario at 5 · 10 <sup xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink">-11</sup> bit error rate, irrespective sudden shifts up 200 pm or iterated variations °C temperature range, with recovery time around ms. These prove that AWGR-based interconnections equipped real-time drift compensation systems can be viable option multi-socket layouts even highly demanding