16-Channel Directly Modulated Membrane III-V Laser Array on SiO₂/Si Utilizing Photon-Photon Resonance

Abstract

Following the demand for 1.6 Tbps and beyond data rates and lower power consumption transceivers in data center networks and related systems, we present the first 16-channel directly modulated laser (DML) array exhibiting the photon-photon resonance (PPR) effect. Bandwidths of ∼50 GHz at bias currents between 6.1 ∼ 9.2 mA were achieved for all 16 channels in a membrane laser array on SiO <sub xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink">2</sub> /Si with optimized integrated optical feedback for stable PPR control, denoting a record bandwidth × no. channel product. The DML array has been demonstrated in an O-band short-reach link by using 100-GBaud NRZ modulations, resulting in <130 fJ/bit laser-operating energies. These results denote a significant stride towards ultra-low power consumption DML transmitters for 1.6 Tbps interconnects and beyond.