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, Pierre-Alexandre Blanche, Alexander Miles, Alexander Miles, Brittany Lynn, Brittany Lynn, John Wissinger, John Wissinger, Daniel Carothers, Daniel Carothers, Robert A. Norwood, Robert A. Norwood, Nasser Peyghambarian, 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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