Induced Bragg Gratings in Optical Fibers and Waveguides Using an Ultrafast Infrared Laser and a Phase Mask

<table>Schematic of diffractive order walk-off (a) pulse envelope projection normal to phase mask, (b) two-beam interference from each order pair.</table>

Laser Chemistry

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Figure 2

Figure 2: Induced Bragg Gratings in Optical Fibers and Waveguides Using an Ultrafast Infrared Laser and a Phase Mask 