US PATENT SUBCLASS 65 / 397
.~.~ Fluorine doping

Current as of: June, 1999
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65 /   HD   GLASS MANUFACTURING

376  DF  PROCESSES OF MANUFACTURING FIBERS, FILAMENTS, OR PREFORMS {18}
385  DF  .~ Process of manufacturing optical fibers, waveguides, or preforms thereof {29}
397.~.~ Fluorine doping {1}
398  DF  .~.~.~> Germanium or boron containing

DEFINITION

Classification: 65/397

Fluorine doping:

(under subclass 385) Processes wherein the property altering material used to treat the optical fiber, waveguide, or

preform consists of fluorine.

(1) Note. Doping in this art is most commonly used to alter the refractive index of an optical fiber, waveguide, or preform.