Imaging and 3D Printing by Light control in Multimode fibers
3D Printing and Endofabrication A complete method for additive manufacturing –also known as 3D printing- using a multimode optical fiber is demonstrated. Up to now, 3D printing systems have required large optical elements or nozzles in proximity to the built structure. In this system, we use time-gated digital phase conjugation, which consists of two steps: the calibration and the reconstruction step.
Light based droplet Printing
dvanced printing applications require functional inks with complex physical properties. Today there are two main approaches to generate liquid droplets on demand: piezoelectric and thermal actuation. Their jetting mechanism is based on the generation of a pressure pulse to eject a small amount of incompressible liquid through a nozzle, hence producing one or more microdroplets.
Deep Learning and Multimode Lasers
Multi-mode fibers (MMFs) are gaining widespread interest due to the constant growing need for high speed communication. The full data communication bandwidth potential of MMFs cannot be yet exploited due to the inter channel data scrambling inside the fiber. The individual channels, called modes, in the fiber mix as they propagate through the fiber, producing unrecognizable patterns on the distal end, known as speckles. With the advent of powerful processors and new neural network architectures, known as convolutional networks, there is now the excitement that machine learning could be a viable approach to decipher the scrambling occurring in MMFs and thus unlock their full bandwidth potential.
