Optics: measuring and testing – For optical fiber or waveguide inspection
Patent
1985-11-01
1987-05-05
McGraw, Vincent P.
Optics: measuring and testing
For optical fiber or waveguide inspection
G01N 2101, G01N 2188
Patent
active
046627430
ABSTRACT:
A method for measuring certain geometrical properties of an optical fiber wherein the coating is removed from adjacent one end of the fiber, a high intensity light source is focused at the bare fiber and coating interface in order to couple scattered light into the optical fiber cladding and the intensity distribution of the transmitted light at the end face of optical fiber is analyzed. In this fashion nonuniformities on the end face of the optical fiber will not substantially affect the accuracy of measurements of geometrical properties of the cladding region of the optical fiber.
REFERENCES:
patent: 3982816 (1976-09-01), Watkins
patent: 4027977 (1977-06-01), Frazee, Jr. et al.
patent: 4067651 (1978-01-01), Watkins
patent: 4349276 (1982-09-01), De Vita
patent: 4362943 (1982-12-01), Presby
patent: 4406732 (1983-09-01), Kayoun
patent: 4492463 (1985-01-01), Marcuse et al.
"Automatic Geometric Measurements of Single-Mode and Multimode Optical Fibers", by D. Marcuse et al., Applied Optics, vol. 18, No. 3, Feb. 1979, p. 402.
Hatton William H.
Nishimura Masayuki
Jenkins Richard E.
McGraw Vincent P.
Sumitomo Electric Research Triangle, Inc.
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