1

2
Alan D Kersey: Optical sensor system utilizing bragg grating sensors. The United States of America represented by the Secretary of the Navy, Thomas E McDonnell, George Jameson, October 21, 1997: US05680489 (122 worldwide citation)

An optical system for detecting perturbations indicative of the performance f the piece of equipment being monitored is disclosed. The optical system comprises sensors each of which use Bragg gratings induced therein and wherein the Bragg gratings are arranged into a preselected distribution and eac ...


3
Robert J Maron, Alan D Kersey: Multi-parameter fiber optic sensor for use in harsh environments. CiDRA Corporation, April 6, 1999: US05892860 (118 worldwide citation)

A sensor capable of measuring a number of physical parameters in a harsh environment includes a plurality of intrinsic fiber optic sensor elements formed within a core of an optical fiber, the optical fiber being disposed within a capillary tube made of a high strength, corrosion resistant material. ...


4
Alan D Kersey, Timothy A Berkoff: Fiber grating-based sensing system with interferometric wavelength-shift detection. The United States of America represented by the Secretary of the Navy, Thomas E McDonnell, Daniel Kalish, November 1, 1994: US05361130 (105 worldwide citation)

A system for sensing a measurand field, the system comprising a source of broadband light, a sensor, an unbalanced optical interferometric apparatus, and a signal processor. The sensor produces an optical return signal having a wavelength functionally dependent on the measurand field. The interferom ...


5
Alan D Kersey, Anthony Dandridge, Sandeep T Vohra: Coherent reflectometric fiber Bragg grating sensor array. The United States of America represented by the Secretary of the Navy, John J Karasek, Sally A Ferrett, September 4, 2001: US06285806 (81 worldwide citation)

A fiber optic sensor array has multiple segments, each capable of detecting a physical condition such as an acoustic wave. The segments are separated by weak reflectors such as fiber optic Bragg gratings. Light from a light source is input into the input end of the array. Light reflected by each of ...


6

7
Alan D Kersey, Daniel L Gysling, James D Paduano: Method and system for determining the speed of sound in a fluid within a conduit. Weatherford Lamb, Ware Fressola Van Der Sluys & Adolphson, July 1, 2003: US06587798 (77 worldwide citation)

A method and corresponding system for measuring the speed of sound in a fluid contained within an elongated body, the sound transversing the elongated body substantially along a direction aligned with the longest axis of the elongated body, the method including the steps of: providing at predetermin ...


8

9

10
Timothy J Bailey, Robert N Brucato, Michael A Davis, Alan D Kersey, Martin A Putnam, Paul E Sanders, James S Sirkis: Tunable external cavity semiconductor laser incorporating a tunable bragg grating. CiDRA Corporation, Ware Fressola Van Der Sluys & Adolphson, October 22, 2002: US06470036 (64 worldwide citation)

A tunable external cavity semiconductor laser incorporating a tunable Bragg grating, including: a semiconductor gain medium; an elongated tuner housing having a tuner housing head and having a tuner housing foot, the tuner housing head and tuner housing foot being rigidly connected; a span of wavegu ...