16-Channel Directly Modulated Membrane III-V Laser Array on SiO<sub>2</sub>/Si Utilizing Photon-Photon Resonance
Nikolaos-Panteleimon Diamantopoulos, Takuro Fujii, Suguru Yamaoka, Hidetaka Nishi, Koji Takeda, Toru Segawa, Shinji Matsuo
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.