Optical waveguides – Having particular optical characteristic modifying chemical... – Of waveguide core
Reexamination Certificate
2007-11-06
2007-11-06
Bovernick, Rodney (Department: 2874)
Optical waveguides
Having particular optical characteristic modifying chemical...
Of waveguide core
C359S341500, C501S041000
Reexamination Certificate
active
10425039
ABSTRACT:
The invention provides optical waveguides comprising a glass doped with a rare earth dopant on a surface of the substrate, wherein the glass comprises (a) Al2O3, at least one of REO or Y2O3, and at least one of ZrO2or HfO2, wherein at least 80 percent by weight of the glass collectively comprises the Al2O3, at least one of REO or Y2O3, and at least one of ZrO2or HfO2, based on the total weight of the glass; (b) Al2O3, at least one of REO or Y2O3, and at least one of ZrO2or HfO2, wherein at least 70 percent by weight of the glass collectively comprises the Al2O3, at least one of REO or Y2O3, and at least one of ZrO2or HfO2, and wherein the glass contains not more than 20 percent by weight SiO2and not more than 20 percent by weight B2O3, based on the total weight of the glass; or (c) at least 40 percent by weight Al2O3, based on the total weight of the glass, and a first metal oxide other than Al2O3, wherein the Al2O3and the first metal oxide, collectively comprise at least 80 percent by weight of the glass.
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Anderson Mark T.
Budd Kenton D.
Rosenflanz Anatoly Z.
Schardt Craig R.
Bardell Scott A.
Bovernick Rodney
Little Douglas B.
Stahl Mike
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