Optics: measuring and testing – For optical fiber or waveguide inspection
Reexamination Certificate
2005-07-05
2005-07-05
Palmer, Phan T. H. (Department: 2874)
Optics: measuring and testing
For optical fiber or waveguide inspection
C356S460000, C385S012000
Reexamination Certificate
active
06914669
ABSTRACT:
A glass base material, which is a base material of an optical fiber, comprising: a core; and a clad surrounding the core; wherein: a rate of change in a relative-refractive-index-difference between the core and the clad in a longitudinal direction of the glass base material is substantially 6% or less.
REFERENCES:
patent: 5191206 (1993-03-01), Boiarski et al.
patent: 6614512 (2003-09-01), Sakamoto et al.
patent: 6717659 (2004-04-01), Huang et al.
patent: 2003/0030786 (2003-02-01), Shurgalin et al.
patent: 3207323 (2001-07-01), None
Palmer Phan T. H.
Shin-Etsu Chemical Co. , Ltd.
Smith , Gambrell & Russell, LLP
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