Method and apparatus for determining optical absorption and emis

Details Method and apparatus for determining optical absorption and emis Method and apparatus for determining optical absorption and emis

1988-08-16

1990-01-02

McGraw, Vincent P.

Optics: measuring and testing

For optical fiber or waveguide inspection

356 731, G01N 2164, G01N 2184

Patent

active

048909157

ABSTRACT:
A method of determining optical absorption and emission spectra from a crystal or non-crystalline fiber sample includes directing a laser light source to a side of the fiber sample and measuring fluorescence intensity at various positions along the crystal fiber sample, and then directing a broadband light source through the ends of the crystal fiber sample and measuring absorption in a region of no fluorescence. The preferred apparatus for carrying out the method includes a broadband light source to generate measurable absorption outside the region of fluorescence and a laser light source for generating measurable absorption in the region of fluorescence.

REFERENCES:
patent: 4556314 (1985-12-01), Stone
patent: 4613757 (1986-09-01), Deserno et al.
patent: 4657388 (1987-04-01), Coppa et al.
patent: 4659215 (1987-04-01), Sumida et al.
patent: 4662743 (1987-05-01), Nishimura et al.
patent: 4730922 (1988-03-01), Bach et al.

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