Optics: measuring and testing – By dispersed light spectroscopy – Utilizing a spectrometer
Patent
1980-12-03
1984-11-06
McGraw, Vincent P.
Optics: measuring and testing
By dispersed light spectroscopy
Utilizing a spectrometer
356351, G01B 902, G01C 1964
Patent
active
044809158
ABSTRACT:
The invention relates to ring interferometers. It aims at making strictly reciprocal a ring interferometer of any known structure, by means of a mode filter which allow a particular mode to be selected among all the modes likely to be propagated in the loop and to arrive at the detection device; this filtering is carried out by a mode filter comprising for example a screen pierced with a hole or an integrated wave-guide or optical fiber portion which are advantageously monomode.
REFERENCES:
patent: 4257707 (1981-03-01), Liertz et al.
patent: 4302107 (1981-11-01), Schiffner et al.
"Fiber-Ring Interferometer: Polarization Analysis," Ulrich et al., Optics Letters, vol. 4 #5, May 1979, pp. 152-154.
"Fiber-Optic Rotation Sensing with Low Drift," Ulrich, May 1980, Optics Letters, vol. 5, No. 5, pp. 173-175.
"Re-Entrant Fiberoptic Approach to Rotation Sensing," Arditty et al., SPIE vol. 157, Laser Inertial Rotation Sensors (1978), pp. 138-148.
"Sensitivity Analysis of the Sagna Effect Optical Fiber Ring Interferometer," Applied Optics, vol. 18, No. 6, Mar. 1979, by S. C. Lin et al., pp. 915-931, *pp. 915-916, 929*.
Arditty Herve
Papuchon Michel
Peuch Claude
"Thomson-CSF"
McGraw Vincent P.
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