Back to results
US 4,049,413 AGranted
Method for making optical fibers with variations in core diameter
AssigneeBell Telephone Laboratories, Incorporated
InventorWilliam George French
Life of this patent
Estimating the term…
Abstract
A method is disclosed for producing optical fibers which are drawn with diameter variations in the transmitting core but with uniform overall diameter. In this process the glass starting member used in fabricating the optical fiber preform is etched with appropriate grooves. Additional glass is subsequently deposited on the etched starting member, and a fiber is drawn from the preform so fabricated.
Claims12
A method for producing clad optical fibers with diameter variations in the transmitting core, but with uniform overall diameter, comprising:
- etching grooves around a cylindrical glass starting member, which grooves are approximately perpendicular to the axis of the starting member and with a periodicity between 0.5/R mm and 50/R mm;
- depositing additional glass on the etched starting member to form a glass member of uniform overall diameter;
- and
- drawing the structure so formed into a fiber.
1 more element
Dependencies are inferred from the claim text.