The DOLORES project was presented at the European Conference on Optical Communication (ECOC) 2025 in Copenhagen, with the paper “Multidimensionally‑Encoded High‑Precision Optical Multiplier for Matrix Multiplication.” The conference proceedings are available on our website in the “Publications” section.
The paper introduces a new approach to high‑precision optical matrix multiplication, addressing a central challenge in optical computing: achieving digital‑level numerical accuracy while retaining optical parallelism. The proposed solution relies on multidimensional encoding to enable precise and scalable optical multiplication.
A central contribution of this work is the experimental proof of concept, implemented using bulk optical components. The system combines a bulk Mach–Zehnder modulator, fiber‑based dispersion, and a silicon photonic chip with microring resonators for weight loading. This hybrid bulk–PIC platform was deliberately chosen to clearly validate the operating principles, precision, and noise behavior of the digital optical multiplier before moving to full integration.
While the experiment uses bulk optical components, the demonstrated architecture is fully compatible with silicon photonic integration, making this work a key step toward scalable optical matrix‑vector multiplication systems within the DOLORES project.
The work was presented by Pierre Nay, a first‑year PhD student, who demonstrated the feasibility of digitally encoded optical multiplication and highlighted its potential for future high‑precision optical computing systems.
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