Optical holographic recording by guided waves in azo-dye-doped polymer multimode fibers

We report holographic recording in photosensitive polymer optical fibers by guided beams. The fibers are made of poly(methyl methacrylate) doped with Disperse Red 1as photosensitive element. Holographic recordings are performed with parallel- and orthogonally-polarized writing beams. Recording of Fourier-transform images in these fibers is also demonstrated. The recording mechanism is photoinduced reorientation of Disperse Red 1 molecules.