Ultra-high temperature chirped fiber Bragg gratings produced by gradient stretching of viscoelastic silica

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Journal Article
Optics Letters, 2013, 38 (24), pp. 5397 - 5400
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By applying a suitable quadratic temperature distribution at a temperature within the viscoelastic softening region for silica, a regenerated chirped grating with bandwidth of 9.8 nm is produced from a uniform grating using post strain-tuning under load. Simulated and experimental results are in good agreement. © 2013 Optical Society of America.
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