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Oct 23rd, 2012
University of Minnesota develops optomechanics switch for all-optical switching
An optical switch might be the first step towards faster optical communications.
At the tiny sizes of integrated photonics, an optical signal can generate enough mechanical force to physically move a small object, such as the tip of a cantilever. Researchers at the University of Minnesota used this property to create an optomechanical force to deflect the cantilever. Because the cantilever contained an optical waveguide, they were able to modulate the optical signal passing through the cantilever using only optically passive materials (Nat. Comm. 3:1091, 2 Oct 2012).
Fig 1: A microscale mechanical switch on a silicon chip uses light from a microring to deflect a cantilevered light guide (foreground), thus modulating the signal.
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