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

<table>Comparison of the Fourier components for the pristine and hydrogen-loaded <i>SMF-28</i> fiber. The magnitude of the first-order component has been set to 1.</table>

Laser Chemistry

fig8

Figure 8

Figure 8: Induced Bragg Gratings in Optical Fibers and Waveguides Using an Ultrafast Infrared Laser and a Phase Mask 