再颁专利
USRE44288E1 Optical fiber and method for making such fiber 有权
光纤及其制造方法

Optical fiber and method for making such fiber
摘要:
According to one example of the invention an optical fiber comprises: (i) silica based, rare earth doped core having a first index of refraction n1; (ii) at least one silica based cladding surrounding the core and having a second index of refraction n2, such that n1>n2; wherein at least one of the core or cladding is doped with Al2O3, such that the ratio of max wt % to min wt % of Al2O3 concentration is less than 2:1.
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