… We report efficient acousto-optic control of speckle contrast at the output of multimode fibers
(MMFs) using a cylindrical piezoelectric transducer (PZT) vibrating in the radial direction. …

… vibrating in radial direction to characterize the POF response. The multimode fiber was coiled
… and periodic stretching effect was caused by the radial oscillations of the actuator. The PZT …

… To characterize the radial field distribution, we need an additional mode number a. The
propagation … 2 in such a way that it has the direction of Mr) at r. A line element along this ray is …

… radial direction offset between the lead-in single mode fiber and the graded-index multimode
fiber… microparticle with respect to the fiber tip without need of moving the fiber probe itself. It …

… an ideal lossless directional coupler for which all the fiber elements maintain … radial mode
number. Denoting the spreading width by A r , we obtain for the desirable width in the radial …

… lens), the plane waves are concentrated about the directions —i—fi.,,,L … As we learn from (4),
the p1'opagation directions of … But 8 is now considered as a radial variable which covers the …

… moves away from the center of the fiber, leading to sub-diffraction focusing in the radial
direction. The focus compression in radial direction is accompanied with the emergence of …

… The light is then launched into a multimode fiber, and the SOP … In our experiments the
multimode fiber length was 10 m, core … denote the direction of the polarizations in each mode. Our …

… between core and cladding, is the radial distance from the center of the fiber, is the core
radius, and … As the fiber bends along x, there is a change in direction of the x axis, so the above …

… on the parameters of multimode fiber and projection systems … radial direction of the objective
lens aperture was used. An improvement using both of the radial and azimuthal directions of …