[17a-Z10-1~10] 3.15 Silicon photonics and integrated photonics

[17a-Z10-6] High resolution coherent electro-optical digital-analog converters based on circuit topology

〇Shota Kita^1,2, Guangwei Cong³, Kengo Nozaki^1,2, Yuriko Maegami³, Morifumi Ohno³, Noritsugu Yamamoto³, Koji Yamada³, Akihiko Shinya^1,2, Masaya Notomi^1,2 (1.NTT Nanophotonics Center, 2.NTT BRL, 3.AIST)

Keywords:photonic digital-to-analog converters, circuit topology, linear optics

We report 8-bit and low wavelength dependence operation of an electric-optical digital-to-analog converter which converts “parallel electrical digital signals” to “optical analog signals” seamlessly as one of key components for low latency and low power consumption photo-electric converged accelerators. Our configuration based on circuit topology exploits linear optics for efficient bit weighting, then it becomes only one thing that simultaneously satisfies low latency, low loss, and low noise characteristics. We assume to apply this for data input of the accelerators and communications.