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

<table>Comparison of experimental (black) and modeled (gray) spectra for an irradiation intensity approaching the type I-IR to type II-IR transition (<svg height="16.049999" id="M59" style="vertical-align:-0.1638pt" version="1.1" viewbox="0 0 54.1875 16.049999" width="54.1875" xmlns="http://www.w3.org/2000/svg" xmlns:xlink="http://www.w3.org/1999/xlink">
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</svg> W/cm<sup>2</sup>). Inset is the index modulation profile used to model the spectrum; fringe spacing is not to scale in figure.</table>

Laser Chemistry

fig7

Figure 7

Figure 7: Induced Bragg Gratings in Optical Fibers and Waveguides Using an Ultrafast Infrared Laser and a Phase Mask 