Title: Optical fiber fabrication

Abstract: A preform for fabrication of a glass fiber optical transmission line is prepared by chemical reaction of vapor ingredients within a glass tube. Reaction, which may be between chlorides or hydrides of, for example, silicon and germanium with oxygen, occurs preferentially within a constantly traversing hot zone. Flow rates and temperature are sufficient to result in glass formation in the form of particulate matter on the inner surface of the tube. This particulate matter deposits on the tube and is fused with each passage of the hot zone. Continuous rotation of the tube during processing permits attainment of higher temperatures within the heated zone without distortion of the tube.

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Inventors: Macchesney, John B. (Stirling, NJ)
O'connor, Paul B. (Plainfield, NJ)

Application Number: 06/117522
Filing Date: 1980-02-01
Publication_date: 1982-06-15
Assignee: BELL TELEPHONE LABOR INC

Primary Class(es): 65/417 65/428, 65/419, 427/231, 427/237
Other Classes: C03B37/018; G02B6/02; C03B37/07; C03B37/075
US Patent Ref:

3711262	January, 1973	Keck et al.	65/3A
3737292	June, 1973	Keck et al.	65/3A
3737293	June, 1973	Maurer	65/3A
3823995	July, 1974	Carpenter	65/3A	METHOD OF FORMING LIGHT FOCUSING FIBER WAVEGUIDE
3826560	July, 1974	Schultz	65/3A	METHOD OF FORMING A LIGHT FOCUSING FIBER WAVEGUIDE
3843229	October, 1974	Rosenberger	350/96.31	OPTICAL WAVEGUIDE HAVING A GRADED REFRACTIVE INDEX CORE FORMED OF SILICON AND GERMANIUM
3884550	May, 1975	Maurer et al.	65/3A	Germania containing optical waveguide
3961926	June, 1976	Asam	65/3A	Preparation of germania cores in optical fibers
4217027	August, 1980	MacChesney et al.	65/3A	Optical fiber fabrication and resulting product

Other Refs: CA585567CA716516DE2328930DE2434717

October, 1959
August, 1965
January, 1974
March, 1975

Other References: Powell et al., Vapor Deposition, John Wiley and Sons, Inc., New York, 1966: pp. 11, 12, 149-153, 259-263 and 391-397.
Steinmaier et al., "Successive Growth of Si and SiO.sub.2 in Epitaxial Apparatus", J. El. Soc., vol. 111, 1964: pp. 206-209.
Kern et al., "Chemical Vapor Deposition of Silicate Glasses . . . ", J. El. Soc., vol. 117, 190: pp. 562-568.
MacChesney et al., "Preparation of Low Loss Optical Fibers . . . ", Tenth Int. Congress on Glass, Jul. 1974: pp. 6-40 to 6-45.

Primary Examiner: Fisher, Richard V.
Assistant Examiner:
Attorney: Indig, George S.
Dworetsky, Samuel H.

Parent Case Data:

This is a continuation of application Ser. No. 828,617, filed A