Demonstration of a 4 × 4-port universal linear circuit

By A. Ribeiro, A. Ruocco, L. Vanacker, Wim Bogaerts. 2016

186 citations recorded by the source corpus.

We present a silicon implementation of a 4 × 4-port universal linear optical circuit. Instead of predefining the exact functionality of a photonic circuit at design time, we demonstrate a simple generic silicon photonic circuit, combined with electronic control and software feedback, that can perform any linear operation between its four input ports and output ports. The circuit consists of a network of thermally tunable symmetric Mach–Zehnder interferometers with phase and amplitude control, in-circuit optical power monitors, and local software controlled feedback loops. The circuit can be configured using a training mechanism, which makes it self-adapt to implement the desired function. We use the circuit to demonstrate an adaptive, universal beam coupler, as well as a switch matrix.

Subfields: Artificial Intelligence, Electrical and Electronic Engineering

View Paper: https://www.semanticscholar.org/paper/3d0b677c25bf55bca3fc8aaee1e643a31ee316b2

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In Artificial Intelligence

Citations in the corpus

Space-efficient optical computing with an integrated chip diffractive neural network (2022, unknown): “Compared to the previous design with an area of 5 mm 2 and power of 3 – 7 W 7,10,13 , our IDNN chip achieves the reduced hardware footprint (0.53 mm 2 ) and low power consumption (17.5 mW), manifesting the advantage of the Fourier-based design as a scalable and power-ef ﬁ cient solution for…”
Photonic matrix multiplication lights up photonic accelerator and beyond (2022, methodology): “68 .”
Programmable phase-change metasurfaces on waveguides for multimode photonic convolutional neural network (2020, methodology): “Their use in programmable photonic devices thus can have a signi ﬁ cant advantage in power consumption over electro-optic 27 – 29 or thermo-optic methods 30 – 32 .”