04227907 is referenced by 22 patents and cites 1 patents.

Disclosed is a method to prepare and coat an optical fiber with Si.sub.3 ub.4. The Si.sub.3 N.sub.4 is synthesized from SiF.sub.4 +NH.sub.3 and/or SiH.sub.4 +NF.sub.3 by laser photochemical reaction (LPR) techniques in a controlled atmosphere chamber. The silicon fiber which is a representative optical fiber is drawn from a preform at about 2000.degree. C. in a standard fiber drawing furnace. Immediately after drawing of fiber, the fiber is passed through a chamber with a controlled atmosphere containing SiX.sub.4 and NX.sub.3 gases, wherein X equals hydrogen or fluorine. A laser is used to irradiate the atmosphere and the Si.sub.3 N.sub.4 is coated on the optical fiber to a thickness of about 0.02-0.20 micrometer which hermetically seals the fiber and enhances and maintains the mechanical strength thereof.

Title
Laser photochemical synthesis coating of optical fiber
Application Number
6/87115
Publication Number
4227907
Application Date
October 22, 1979
Publication Date
October 14, 1980
Inventor
James A Merritt
Pulaski
TN, US
Agent
Jack W Voigt
Robert P Gibson
Nathan Edelberg
Assignee
The United States of America represented by the Secretary of the Army
DC, US
IPC
C03C 25/02
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