Low Loss Fan-Out Structure for Multimode Waveguide-Based Reservoir Computing
Hirotaka Oshima, Takashi Kan, Hideaki Tanaka, Hidenori Takahashi, Katsuyuki Utaka, Masatoshi Suzuki · 2023
In this paper, we present a compact and efficient structure designed to extract optical output from a multimode waveguide (MMW), which facilitates the propagation of multiple waveguide modes. Our focus is on its application in reservoir computing systems. Through extensive simulations and parameter adjusting, we demonstrate that the average loss across all guided modes can be effectively reduced to as low as 0.3 dB. Our proposed structure is specifically designed for a 25 μm wide MMW implemented on a silicon photonics platform.