Apparatus for measuring the effective refractive index in optica

Details Apparatus for measuring the effective refractive index in optica Apparatus for measuring the effective refractive index in optica

1992-12-11

1994-10-18

McGraw, Vincent P.

Optics: measuring and testing

For optical fiber or waveguide inspection

356361, G01N 2145

Patent

active

053573331

ABSTRACT:
Apparatus for measuring the effective refractive index in optical fibers, in which a source sends light radiation, the wavelength of which can be varied within a predetermined interval, into a fiber span, and a detector collects the radiation intensity of the radiation collected by the detector as the wavelength varies, in order to determine the oscillation period of the fiber transmittance or reflectivity and to obtain the effective refractive index from such period.

REFERENCES:
patent: 4335961 (1982-06-01), Chou et al.
patent: 4984884 (1991-01-01), Ryu et al.
patent: 5179420 (1993-01-01), So et al.
Patent Abstracts of Japan vol. 8, No. 169 4 Aug. 1984 JP A 59 63 545.
Patent Abstracts of Japan vol. 15, No. 91 5 Mar. 1991 JP A 23 07 042.

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