Alloptical positioner and stabilizer made from fiber

Photothermal expansion is a nonlinear effect that most scientists try to eliminate. However, at Washington State University (WSU, Pullman, WA), researchers are making use of this effect to create opticalfiberbased positioners and related devices. They found a way to couple light from an interferometer into a length of poly(methyl methacrylate), or PMMA, fiber in a configuration that allows for compensation of external influences. The length of the fiber varies with the intensity of the light pro

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