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Increase of photosensitivity in Ge-doped fibers under strain

E. Salik, D. S. Starodubov, and J. Feinberg

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Abstract

Straining a Ge-doped optical fiber increases its UV photosensitivity. The speed of grating fabrication in a standard AT&T telecommunication fiber increases by 18 times, while the final refractive-index change is enhanced by a factor of 5. Measurements reveal opposite changes in the stress of the fiber core induced by UV light in strained and unstrained fibers.

© 2000 Optical Society of America

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