Spectrometer employing optical fiber time delays for frequency r

Details Spectrometer employing optical fiber time delays for frequency r Spectrometer employing optical fiber time delays for frequency r

1978-01-12

1979-08-14

McGraw, Vincent P.

Optics: measuring and testing

By dispersed light spectroscopy

With sample excitation

250227, 356328, 356317, 356338, G01J 330, G01N 2152

Patent

active

041643739

ABSTRACT:
This invention provides different length glass fibers for providing a broad range of optical time delays for short incident chromatic light pulses for the selective spatial and frequency analysis of the light with a single light detector. To this end, the frequencies of the incident light are orientated and matched with the different length fibers by dispersing the separate frequencies in space according to the respective fiber locations and lengths at the input terminal of the glass fibers. This makes the different length fibers useful in the field of plasma physics. To this end the short light pulses can be scattered by a plasma and then passed through the fibers for analyzing and diagnosing the plasma while it varies rapidly with time.

REFERENCES:
patent: 3547542 (1970-12-01), Bulpitt et al.
patent: 3880723 (1975-04-01), Thomas
patent: 3885879 (1975-05-01), Louder et al.
patent: 3892468 (1975-07-01), Duguay

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