Method and apparatus for high resolution measurement of very low

Details Method and apparatus for high resolution measurement of very low Method and apparatus for high resolution measurement of very low

1995-05-19

1997-08-05

McGraw, Vincent P.

Optics: measuring and testing

For optical fiber or waveguide inspection

356365, G01J 404, G01N 2123

Patent

active

056547935

ABSTRACT:
A method and apparatus for measuring Polarization Mode Dispersion (PMD) of a single mode optic fiber by providing a PMD measuring instrument with a light source. Light is transmitted serially through the optic fiber being tested and an artefact with a known, stable PMD value. The artefact biases the total PMD measured by the instrument away from zero. The PMD of the optic fiber may then be determined by data reduction of the total measured PMD. The method may also be used to calibrate a PMD instrument.

REFERENCES:
patent: 3445833 (1969-05-01), Lins
patent: 4241997 (1980-12-01), Chraplyvy
patent: 4750833 (1988-06-01), Jones
Costa et al. "Phase Shift Technique for the Measurement of Chromatic Dispersion in Optical Fibers Using LED'S" IEEE Journal of Quantum Electronics, vol. QE-18, No. 10, Oct. 1982, pp. 1509-1515.

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