Abstract

Optical signal processing (OSP) has the potential to enable line-rate processing functionalities in optical communication networks through direct operation on optical data and avoidance of optical-to-electrical-to-optical (OEO) conversion. One such functionality is optical pattern recognition, in which the location of target patterns in the transmitted optical data stream is identified; common optical data formats include quadrature-phase-shift-keying (QPSK) data. Whereas prior approaches have performed optical pattern recognition to locate a single pattern in a QPSK optical data stream, it might be advantageous to optically recognize multiple patterns simultaneously. In this paper, we experimentally demonstrate optical recognition of multiple QPSK patterns using two approaches based on nonlinear wave mixing, one using time multiplexing and one using wavelength multiplexing. In the intra-symbol time multiplexing …

Date

June 11, 2025

Authors

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

Journal

Journal of Lightwave Technology

Publisher

IEEE