Abstract

Compared to its electronic counterpart, optically performed matrix convolution can accommodate phase-encoded data at high rates while avoiding optical-to-electronic-to-optical (OEO) conversions. We experimentally demonstrate a reconfigurable matrix convolution of quadrature phase-shift keying (QPSK)-encoded input data. The two-dimensional (2-D) input data is serialized, and its time-shifted replicas are generated. This 2-D data is convolved with a 1-D kernel with coefficients, which are applied by adjusting the relative phase and amplitude of the kernel pumps. Time-shifted data replicas (TSDRs) and kernel pumps are coherently mixed using nonlinear wave mixing in a periodically poled lithium niobate (PPLN) waveguide. To show the tunability and reconfigurability of this approach, we vary the kernel coefficients, kernel sizes (e.g., 2?×?1 or 3?×?1), and input data rates (e.g., 6–20?Gbit/s). The convolution …

Date

2024

Authors

Amir Minoofar, Abdulrahman Alhaddad, Wing Ko, Narek Karapetyan, Ahmed Almaiman, Huibin Zhou, Muralekrishnan Ramakrishnan, Murali Annavaram, Moshe Tur, Jonathan L Habif, Alan E Willner

Journal

Optics Letters

Volume

49

Issue

17

Pages

4899-4902

Publisher

Optica Publishing Group