Lightguide coating control

Details Lightguide coating control Lightguide coating control

G - Physics

05

D

49/8, 117/85

G05D 5/03 (2006.01) C03C 25/10 (2006.01) C03C 25/22 (2006.01)

Patent

CA 2005998

A laser directs a laser beam at an optical fiber and the resulting forward-scattered light is detected by a detector. The energy of the forward- scattered laser light is monotonically inversely proportional to the thickness of a carbon coating on the optical fiber. A computer generates an electrical signal for controlling carbon coating thickness by driving a valve to control the flow of acetylene from a source used to coat the optical fiber in a coating chamber.

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