Coating processes – Electrical product produced – Integrated circuit – printed circuit – or circuit board
Patent
1989-07-31
1991-05-07
Ullah, Akm
Coating processes
Electrical product produced
Integrated circuit, printed circuit, or circuit board
350 9634, 65 311, 427163, 428364, G02B 610, G02B 600, C03C 2502, B05D 506
Patent
active
050131303
ABSTRACT:
A process for manufacturing an optical fiber includes the steps of heating and drawing material from a hot optical fiber preform; exposing the hot optical fiber to a compound containing carbon for depositing a carbon coating on the moving optical fiber; measuring an electrical property of the carbon coating; and in response to the measured electrical property, changing a parameter of the process for controlling a characteristic of the carbon coating on the moving optical fiber. Featured within the manufacturing method is a method for measuring the thickness of the carbon coating on the moving optical fiber. From the measured thickness of the carbon coating, a control signal is generated for changing one or more of the process parameters for depositing the carbon coating on the optical fiber from a precursor gas. The coated optical fiber continuously moves through the process without any physical contact. No interruption of the production process occurs.
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Atkins Robert M.
Peterson George E.
Tuminaro Raymond D.
Alber O. E.
AT&T Bell Laboratories
Havill R. B.
Ullah Akm
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