TOKYO, March 14, 2019 — A multiplexer/demultiplexer module based on an optical vortex, built by scientists at Tokyo Institute of Technology, could be used to strengthen optical networks so they can meet increasingly heavy traffic demands. The multiplexing/demultiplexing module fabricated (a,d) employs a property of light called the optical vortex to transmit and receive multiple signals simultaneously through a shared optical medium. The required light waves with different optical vortexes are generated using a combination of a star coupler (b) and an optical-vortex generator (c). Courtesy of the Optical...Read full articleRelated content from Photonics MediaARTICLESCommemorating 30 Years of Optical VorticesThirty years ago, Pierre Coullet et al. proposed that a special optical field exists in laser cavities bearing some similarity with the superfluid vortex. 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