Abstract: A method of measuring acceleration using an optical sensor. In the optical sensor, 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.

Abstract: 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.

Abstract: 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.

Abstract: A sensor apparatus combines an optical sensor in which acceleration, acoustic velocity, or displacement (vibration) causes a corresponding shift in the center wavelength of the sensor output, 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.

Abstract: A sensor apparatus combines an optical sensor in which acceleration, acoustic velocity, or displacement (vibration) causes a corresponding shift in the center wavelength of the sensor output, 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.

Abstract: A system and method for deploying an optical fiber within the bore or a well using a linear traction to push the optical fiber, typically encased in a protective sheath, down an instrumentation tube to place an optical fiber sensor at a desired location with the bore of the well.

Abstract: An improved laser diode is taught. A laser diode chip with an optical port for outputing an optical signal is mounted on a substrate. The substrate has a perimeter that extends beyond the area of the laser diode chip. The lens face of an optical fiber is aligned to receive the optical signal from the optical port. The optical fiber is secured at a pad location on the substrate with a solder ball. A portion of the substrate is mounted on a TEC leaving an overhang portion unsupported by the TEC. The overhang portion of the substrate forms a ledge portion of the substrate. A thermal insulating slot and a stress relief slot are micromachined through the substrate forming an "L" shaped slot defining a cantilever fiber support segment of the substrate. The fiber is mounted on the end of the fiber support segment with a solder ball.