| US Seismic Systems, Inc. Patent applications |
| Patent application number | Title | Published |
|---|
| 20120068057 | INTERROGATOR FOR A PLURALITY OF SENSOR FIBER OPTIC GRATINGS - An interrogator for a plurality of sensor fiber optic gratings. The interrogator includes a broadband optical source; at least one beam splitter directing output of the optical source to the sensor fiber optic gratings; at least one linear filter for converting changes in peak reflection wavelength to changes in intensity; at least one optical receiver; and at least one amplifier associated with each optical receiver. The interrogator also includes, alternatively, a driver/modulator for the optical source providing on/off pulses; an analog integrator following the at least one amplifier; or a mechanism compensating for masking of one sensor fiber optic grating by another. | 03-22-2012 |
| 20120006109 | BOREHOLE SENSING AND CLAMPING SYSTEMS AND METHODS OF USING THE SAME - A sensing system configured for use in a borehole. The sensing system includes a body portion and a clamp arm engaged with the body portion. The clamp arm is configured to move between a retracted position and an extended position. The sensing system also includes an energy storage element engaged with the body portion. The energy storage element provides energy to move the clamp arm from the retracted position to the extended position. A method of using the sensing system is also provided. | 01-12-2012 |
| 20110277548 | FIBER OPTIC PARTICLE MOTION SENSOR AND MEASURING METHOD USING THE SENSOR - An optical sensor in which acceleration, acoustic velocity, or displacement (vibration) causes a corresponding shift in the center wavelength of the sensor output. The sensor can be coupled to a high-speed interferometric interrogator through an unbalanced fiber interferometer. The unbalanced interferometer functions to translate optical wavelength shift into phase shift, which is easily demodulated by the interrogator. A method of measuring acceleration uses the sensor. | 11-17-2011 |
