04504113 is referenced by 16 patents and cites 19 patents.

This invention relates to an improved optical filament waveguide providing increased strength and resistance to moisture and chemical attack. This improved optical filament waveguide is particularly useful in the severe environment encountered in wellbore logging operations. This optical filament waveguide is the result of coating, preferably at a temperature below 500.degree. C., an optical filament rod with a relatively thin protective coating of a metal oxide whose coefficient of thermal expansion is of the same order of magnitude as that of the rod.

Title
Reinforced and chemically resistant optical filament
Application Number
6/317675
Publication Number
4504113
Application Date
November 2, 1981
Publication Date
March 12, 1985
Inventor
Tryggve Baak
Carlsbad
CA, US
Assignee
Schlumberger Technology Corporation
TX, US
IPC
G02B 5/14
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