Monitoring and control of optical fiber diameters

Details Monitoring and control of optical fiber diameters Monitoring and control of optical fiber diameters

1976-08-13

1977-09-06

Lindsay, Jr., Robert J.

Glass manufacturing

Processes

Forming product or preform from molten glass

65113, 65 29, 65DIG7, 356159, 356200, C03B 3702

Patent

active

040465365

ABSTRACT:
The diameters of successive axial portions of an optical fiber being drawn are monitored and controlled by an optical measuring technique in such manner as to eliminate the effects of occasional, anomalous measurements or "dropouts". Measurement validity is tested by comparing, with a maximum allowable value, the difference between each successive diameter measurement and a standard for diameter measurement validity. Some examples of such a standard are provided. In addition, two embodiments of fiber monitoring systems are disclosed, as well as an overall monitoring and control system for fiber diameters.

REFERENCES:
patent: 3265476 (1966-08-01), Roberson
patent: 3744905 (1973-07-01), Smith
patent: 3824021 (1974-07-01), Axelrod
patent: 3879128 (1975-04-01), Presby
patent: 3982816 (1976-09-01), Watkins
Fundamental Principles Western Electric, "Statistical Quality Control Handbook", pp. 3-41.

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