Patent ID: 7945130
Filing Date: 2011-05-17
Classification: G02B,G02F

Abstract:
1. A multimode optical fiber device, comprising: a multimode fiber that supports light in two or more optical waveguide modes; a plurality of fiber squeezers engaged to the multimode fiber at different locations along a lengthwise direction of the multimode fiber to squeeze the multimode fiber along two or more different squeezing directions perpendicular to the lengthwise direction, the fiber squeezers responsive to respective control signals to modulate a degree of squeezing at selected squeezing frequencies, respectively, to cause mixing of light in the two or more optical waveguide modes inside the multimode fiber to increase a spatial uniformity of optical power across a cross section of the multimode fiber; and a control unit that produces the respective control signals to the fiber squeezers, respectively, and controls the fiber squeezers to produce either two or more different degrees of squeezing or to squeeze at two or more different selected squeezing frequencies.