Optics: measuring and testing – For optical fiber or waveguide inspection
Patent
1994-02-07
1995-03-07
McGraw, Vincent P.
Optics: measuring and testing
For optical fiber or waveguide inspection
G01N 2141
Patent
active
053963237
ABSTRACT:
A method and apparatus for non-destructive analysis of canes and preforms which contain "striae" in which the cane or preform is transversely illuminated with a beam of light at a wavelength which is long enough to substantially eliminate the effect of striae resulting from variations in dopant concentration.
REFERENCES:
patent: 4181433 (1980-01-01), Marcuse
patent: 4227806 (1980-10-01), Watkins
patent: 4726677 (1988-02-01), Glantschnig et al.
P. L. Chu, "Nondestructive Measurement of Index Profile of an Optical-Fibre Preform", Electronics Letters, vol. 13, No. 24, Nov. 24, 1977, pp. 736-738.
D. Marcuse, Principles of Optical Fiber Measurements, pp. 150-167, Academic Press, New York, 1981.
M. G. Blankenship et al., "The Outside Vapor Deposition Method of Fabricating Optical Waveguide Fibers", IEEE Journal of Quantum Electronics, vol. QE-18, No. 10, Oct. 1982, pp. 1418-1423.
W. J. Stewart, "Optical Fiber and Preform Profiling Technology", IEEE Journal of Quantum Electronics, vol. QE-18, No. 10, Oct. 1982, pp. 1451-1466.
W. J. Glantschnig, "How Accurately Can One Reconstruct an Index Profile from Transverse Measurement Data?", IEEE Journal of Lightwave Technology, vol. LT-3, No. 3, Jun. 1985, pp. 678-683.
Product Brochure for P102 Preform Analyzer, York Technology Inc., Sep. 1988.
Operator's manual for P104 Preform Analyser, York Technology Ltd., May 1992, p. 1.8.
Abbott, III John S.
Knasel Donald L.
Pastel David A.
Reding Bruce W.
Smith Gregory E.
Corning Incorporated
Kamerer Bruce E.
McGraw Vincent P.
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