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Fiber Bragg Grating (FBG) is widely used in the sensing field for its low insertion loss, small size, low cost and insensitivity to polarization. However, traditional FBGs are limited to the resolution in strain sensing. In uniform FBG, the group time delay of the sidelobe near the bandgap is the largest, and the sensitivity is the highest. This paper analyzes the slow light mechanism produced by...
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