Apparatus for measuring spectral transmissivity of optical fiber

Details Apparatus for measuring spectral transmissivity of optical fiber Apparatus for measuring spectral transmissivity of optical fiber

1992-10-09

1993-12-07

McGraw, Vincent P.

Optics: measuring and testing

For optical fiber or waveguide inspection

250228, G01N 2127, G01N 2159

Patent

active

052687325

ABSTRACT:
An integrating sphere has two openings, at which light-receiving and light-emitting ends of an optical fiber sample are attached. A light-receiving opening is provided opposite one of these openings, and another light-receiving opening opposite from none of those other openings. A monochromatic light beam from a source such as a spectroscope is passed through a lens or the like to be made convergent and introduced into the integrating sphere through each of the light-receiving openings. The difference in the optical path length between the two measurements is entirely due to the presence or absence of the optical fiber sample, and the spectral transmissivity of the sample can be measured accurately.

REFERENCES:
patent: 4183666 (1980-01-01), Tahara et al.

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