7 March 2014 Microsecond reconfigurable NxN data-communication switch using DMD
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We present here the use the DMD as a diffraction-based optical switch, where Fourier diffraction patterns are used to steer the incoming beams to any output configuration. We have implemented a single-mode fiber coupled N X N switch and demonstrated its ability to operate over the entire telecommunication C-band centered at 1550 nm. The all-optical switch was built primarily with off-the-shelf components and a Texas Instruments DLP7000™with an array of 1024 X 768 micromirrors. This DMD is capable of switching 100 times faster than currently available technology (3D MOEMS). The switch is robust to typical failure modes, protocol and bit-rate agnostic, and permits full reconfigurable optical add drop multiplexing (ROADM). The switch demonstrator was inserted into a networking testbed for the majority of the measurements. The testbed assembled under the Center for Integrated Access Networks (ClAN), a National Science Foundation (NSF) Engineering Research Center (ERC), provided an environment in which to simulate and test the data routing functionality of the switch. A Fujitsu Flashwave 9500 PS was used to provide the data signal, which was sent through the switch and received by a second Flashwave node. We successfully transmitted an HD video stream through a switched channel without any measurable data loss.
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Pierre-Alexandre Blanche, Alexander Miles, Brittany Lynn, John Wissinger, Daniel Carothers, Robert A. Norwood, Nasser Peyghambarian, "Microsecond reconfigurable NxN data-communication switch using DMD", Proc. SPIE 8979, Emerging Digital Micromirror Device Based Systems and Applications VI, 89790C (7 March 2014); doi: 10.1117/12.2036780; https://doi.org/10.1117/12.2036780

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