Reservoir Computing Using On-Chip XGM-Based Nonlinear Processing by Membrane SOAs on Si-MZI

• DOI: 10.1109/jlt.2023.3345481
• Publication Date: 2023-12-21T19:49:18Z
• Authors: Takuma Tsurugaya; Tatsurou Hiraki; Takuma Aihara; Mitsumasa Nakajima; Nikolaos-Pantelei...; Toru Segawa; Shinji Matsuo

We propose and demonstrate reservoir computing (RC) by all-optical nonlinear processing based on cross-gain modulation (XGM) in III-V membrane semiconductor optical amplifiers (SOAs) a Si Mach-Zehnder interferometer (MZI). In the proposed configuration, two counter-propagating signals are input into SOA-MZI from opposite ports, where they nonlinearly modulate each other via XGM, output to ports. This realizes an on-chip XGM-based processor that separately takes returns signals, not requiring circulators. implement time-delay RC circuit using chip coupled with fiber feedback loop. The strong confinement of SOAs brings significant only 47-mW power consumption under -1-dBm average power. low leads energy per 11 pJ within virtual node interval 237 ps. Processing performances system evaluated through information capacity (IPC) Santa-Fe time-series prediction task, which clearly indicates has ability. Those dependencies delayed signal investigated, clarifying larger higher stronger transformation information. Our scheme offers novel functionality is fully integratable onto Si-based photonic neural network chips.