Optics: measuring and testing – By particle light scattering – With photocell detection
Patent
1989-07-03
1991-08-13
Turner, Samuel
Optics: measuring and testing
By particle light scattering
With photocell detection
25022719, G01B 902
Patent
active
050392212
ABSTRACT:
A switch-selectable calibration signal is applied to an interferometric sensor channel of fiber optic sensor array for monitoring its operation. A calibration signal is applied at a single physical location to determine the channel scale factors and proper operability of multiple sensors at remote locations in the array. An optical signal input to each interferometric sensor channel in the array, and a compensating interferometer receives optical signals output from the fiber optic sensor array. A signal is applied to the compensating interferometer to form an output signal that simulates signals output from each interferometric sensor in the array. These signals are processed to determine the scale factor of each interferometer in the fiber optic sensor array.
REFERENCES:
patent: 4294513 (1981-10-01), Nelson et al.
patent: 4307933 (1981-12-01), Palmer et al.
patent: 4368981 (1983-01-01), Ozeki
patent: 4493528 (1985-01-01), Shaw et al.
patent: 4525818 (1985-06-01), Cielo et al.
patent: 4530603 (1985-07-01), Shaw et al.
patent: 4545253 (1985-10-01), Avicola
patent: 4632551 (1986-12-01), Pavlath
patent: 4648083 (1987-03-01), Giallorenzi
patent: 4697926 (1987-10-01), Youngquist et al.
patent: 4753529 (1988-06-01), Layton
patent: 4775216 (1988-10-01), Layton
patent: 4848906 (1989-07-01), Layton
patent: 4889986 (1989-12-01), Keasey et al.
Sheem et al., "Wavelength Monitoring of Single-Mode Diode Laser Using Guided-Wave Interferometer", Optics Letters, May 1980, vol. 5, No. 5, pp. 179-181.
Schwaier et al., "Lichtwellenleiter in der ProzeBmeBtechnik", Automatisierungstechnische, vol. 27, No. 12, 1985, pp. 574-578.
Dandridge et al., "Homodyne Demodulation Scheme for Fiber Optic Sensors Using Phase Generated Carrier", IEEE Journal of Quantum Electronics, vol. QE-18, No. 10, Oct., 1982, pp. 1647-1652.
Brooks et al., "Fiber-Optic Interferometric Sensor Arrays with Freedom from Source Phase-Induced Noise", Optics Letters, Jul. 1986, vol. 11, No. 7, pp. 473-475.
Dandridge et al., "Phase Compensation in Interferometric Fiber-Optic Sensors", Optics Letters, Jun. 1982, vol. 7, No. 6, pp. 279-281.
Bunn, Jr. James S.
Layton Michael R.
Litton Systems Inc.
Turner Samuel
LandOfFree
Interferometer calibration for fiber optic sensor arrays does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Interferometer calibration for fiber optic sensor arrays, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Interferometer calibration for fiber optic sensor arrays will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-1524114