Method for fiber optic transmission of a special coded measureme

Details Method for fiber optic transmission of a special coded measureme Method for fiber optic transmission of a special coded measureme

1985-08-09

1987-11-10

LaRoche, Eugene R.

Radiant energy

Ionic separation or analysis

Static field-type ion path-bending selecting means

350 9615, 250231R, G01D 530

Patent

active

047053542

ABSTRACT:
A method wherein two light fluxes I.sub.1 and I.sub.2, spectrally encoded by interspersing or alternating line frequency spectra, are transmitted through an optical fiber from a transducer to an evaluation unit which generates an indication signal in relation to the ratio of the optical power of the two light fluxes. Both light fluxes I.sub.1 and I.sub.2 are generated with distinctly different narrow-bandline structures of the spectral distribution of their optical powers with the spectral separation of adjacent lines of the two line fluxes being greater than the linewidth of these lines. The optical power of the spectrally interposed light fluxes I.sub.1 and I.sub.2 are measured individually after spectral separation by filters which are selected to the specific distribution of the light fluxes I.sub.1 and I.sub.2.

REFERENCES:
patent: 3501640 (1970-03-01), Harris
patent: 4281245 (1981-07-01), Brogardh et al.
patent: 4451730 (1984-05-01), Brogardh et al.
patent: 4529875 (1985-07-01), Brogardh et al.

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