Apparatus to measure fiber dispersion

Details Apparatus to measure fiber dispersion Apparatus to measure fiber dispersion

1986-12-19

1988-06-21

McGraw, Vincent P.

Optics: measuring and testing

For optical fiber or waveguide inspection

G01N 2184

Patent

active

047521252

ABSTRACT:
An apparatus and method for measuring dispersion in an optical fiber including transmitting light of a first wavelength and a second wavelength through the optical fiber, measuring the difference in time required for light of the first wavelength and light of the second wavelength to traverse the fiber, and calculating the dispersion of the fiber from the two wavelengths and the time difference. Lasers may be used as light sources and an oscilloscope may be used to measure the time difference.

REFERENCES:
patent: 4257707 (1981-03-01), Liertz et al.
patent: 4662744 (1987-05-01), Coppa et al.
Gloge et al, "Gasa Twin-Laser Setup to Measure Mode & Material Dispersion in Optical Fibers" Applied Optics, vol. 13, #2, Feb. 1974, pp. 261-263.
Vella, Garel-Jones, and Lowe: "Measurement of Chromatic Dispersion of Long Spans of Single-mode Fibre: A Factory and Field Test Method," Electronics Letters, 1984, vol. 20, 167-168.

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