[15p-B508-8~13] 3.15 Silicon photonics and integrated photonics

[15p-B508-9] Proposal for high-efficiency photonic IQ modulators for optical neural network applications

〇Shota Kita^1,2, Kengo Nozaki^1,2, Kenta Takata^1,2, Akihiko Shinya^1,2, Masaya Notomi^1,2 (1.NTT Nanophotonics Center, 2.NTT BRL)

Keywords:optical IQ modulators, linear optics, DAC-free

Towards efficient optical analog input generation for photonic neural network applications, we propose a new configuration for optical IQ modulation that realizes both low-loss and low-noise characteristics with better scalability. This configuration performs the bit weighting process by cascaded linear optical gates with 6-dB better efficiency than the conventional ones for the case of 256QAM format. This configuration is also important for operation power reduction of optical transmitters.