Oxford University Innovation Limited

Karlsruher Institut Fur Technologie

International Business Machines Corporation

University of Exeter

University of Muenster

Wolfram Pernice

Harish Bhaskaran

Abu Sebastian

Manuel Le Gallo-Bourdeau

Martin Wegener

Matthias Blaicher

Christopher David Wright

Nathan Youngblood

Xuan Li

Carlos Rios

Johannes Feldmann

Matthias Stegmaier

A co-processor for performing a matrix multiplication of an input matrix with a data matrix in one step may be provided. The co-processor receives input signals for the input matrix as optical signals. A plurality of photonic memory elements is arranged at crossing points of an optical waveguide crossbar array. The plurality of memory elements is configured to store values of the data matrix. Input signals are connected to input lines of the optical waveguide crossbar array. Output lines of the optical waveguide crossbar array represent a dot-product between a respective column of the optical waveguide crossbar array and the received input signals, and values of elements of the input matrix to be multiplied with the data matrix correspond to light intensities received at input lines of the respective photonic memory elements. Additionally, different wavelengths are used for each column of the input matrix optical signals.

Photonic in-memory co-processor for convolutional operations

A photonic device () comprising: an optical waveguide (), and a modulating element () that is evanescently coupled to the waveguide (); wherein the modulating element () modifies a transmission, reflection or absorption characteristic of the waveguide () dependant on its state, and the state of the modulating element () is switchable by an optical switching signal () carried by the waveguide (), or by an electrical signal that heats the modulating element ().

Photonic device

The present invention is related to an integrated optical circuit, in particular, to an optical-field writable array, as well as to methods for its manufacturing and reconfiguring. The integrated optical circuit comprises at least one nanophotonic device and at least one photonic wire, wherein the nanophotonic device comprises a substrate equipped with at least one reception for at least one external connector, wherein the reception is coupled to at least one connector waveguide, and at least one set of nano-optic components, wherein the nano-optic component is one of a nanophotonic waveguide or a nanophotonic component, wherein the nano-photonic component is nano-optically coupled to at least one nanophotonic waveguide, wherein at least one of the nanophotonic waveguides is selectively coupleable to at least one of the connector waveguides, wherein the photonic wire connects at least one of the nanophotonic waveguides to at least one of the connector waveguides.

Integrated optical circuit and methods for its manufacturing and reconfiguring

A nanophotonic device includes at least two waveguides located on top of a transparent substrate, which form an intersection point at which a part of a first waveguide simultaneously constitutes a part of a second waveguide. A nanoscale element located on top of the intersection point so that it partially or completely covers the intersection point is switchable between two different states, which differ by a refractive index value. The nanophotonic device is operated by injecting at least two optical pulses into the waveguides. Intensity of the optical pulses is selected so that a superposition of the optical pulses switches the nanoscale element into a desired state. Also disclosed is a nanophotonic matrix array in which parallel waveguides form nanophotonic devices. The nanophotonic matrix array may be used as a spatial light modulator (SLM), as an optical mirror, as an optical absorber, or as a tunable optical grating array.

Nanophotonic spatial light modulator

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Karlsruhe, Germany

Wolfram Pernice