Optics: measuring and testing – By dispersed light spectroscopy – Utilizing a spectrometer
Patent
1990-08-09
1992-04-21
Turner, Samuel A.
Optics: measuring and testing
By dispersed light spectroscopy
Utilizing a spectrometer
372 1, 372 6, G01C 1972
Patent
active
051061937
ABSTRACT:
An improved broadband light source for a Sagnac interferometer includes a fluorescent optical medium that is pumped by light from a pump source with a sufficient intensity to cause the fluorescent optical medium to generate temporally incoherent light by superfluorescence. In the preferred embodiment, the superfluorescent optical medium comprises an optical fiber which is backward pumped. The signal output from the interferometer loop is amplified by the optical gain of the superfluorescent fiber which acts as a light source and as an amplifier. In order to avoid gain modulation in the superflorescent fiber, the modulation frequency is selected so that the modulation gain depth is substantially reduced.
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Digonnet Michel J. F.
Fesler Kenneth A.
Kim Byoung Y.
Shaw Herbert J.
The Board of Trustees of the Leland Stanford Junior University
Turner Samuel A.
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