Densely Parallelized Photonic Tensor Processor on Hybrid Waveguide/Free-Space-Optics
M. Nakajima, Kenji Tanaka, Katsuma Inoue, Kohei Nakajima, Toshikazu Hashimoto · 2023
We demonstrate photonic tensor processor based on hybrid waveguide and free-space-optics. Our device can realize 32x100λ matrix operation thanks to the dense space/wavelength parallelization. By constructing the optical benchtop, we confirmed all matrix value can be controlled with good accuracy (>7 bit). Benchmark experiments for the standard neural network models showed good performance compatible to the simulated ones, suggesting the successful operation of our device. The device is considered to be able to perform 188 tera operations per second, which is one magnitude faster than previous approach. We also demonstrate the computation on the optical link using our device.