Methods of fabricating a regenerated optical waveguide grating
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United States of America Patent
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Jun 14, 2005
Grant Date -
Apr 17, 2003
app pub date -
Aug 9, 2002
filing date -
Oct 16, 2001
priority date (Note) -
Expired
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Abstract
A regenerated optical waveguide is fabricated by hydrogenating an optical waveguide (12) and exposing a grating section (28) to a UV laser beam interference fringe pattern (14) to form a Type I grating. The grating section (28) is exposed for a second period to erase the Type I grating, and then a third period to cause a regenerated optical waveguide grating to form. The resonant wavelength increases during the third period from being substantially the same as the final wavelength of the Type I grating.
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