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Fiber optic strain sensor and read-out system 원문보기

IPC분류정보
국가/구분 United States(US) Patent 등록
국제특허분류(IPC7판)
  • G01B-009/02
출원번호 US-0194960 (1994-02-14)
발명자 / 주소
  • Andrews Jeffrey P. (Abingdon MD) McClintock Joseph A. (Baltimore MD) Guerci
  • Jr. Carl F. (Pasadena MD)
출원인 / 주소
  • Martin Marietta Corporation (Bethesda MD 02)
인용정보 피인용 횟수 : 50  인용 특허 : 0

초록 ▼

An optical sensor is described comprising a first optical fiber and a first reflective member. The first optical fiber has a first predetermined length of graded-index multimode optical fiber attached to its end. The first reflective member and the first optical fiber are arranged such that a gap is

대표청구항 ▼

An optical sensor, comprising: a first single mode optical fiber having a predetermined length of a graded-index multimode first optical fiber attached to an end thereof, said first optical fiber having an unattached end; a first reflective member, said first reflective member being spaced by a gap

이 특허를 인용한 특허 (50)

  1. Scott, Andrew M; Turner, Andrew J, Apparatus and method for coupling an optical beam with an optical fibre.
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  5. Boyd, Clark Davis, Demodulation method and apparatus for fiber optic sensors.
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  6. Kokkelink,Jan W.; Findakly,Talal K., Expanding single mode fiber mode field for high power applications by fusion with multimode fiber.
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  7. Haake John M., Fastener equipped with an untethered fiber-optic strain gauge and related method of using the same.
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  8. Lewis, Norris E., Fiber lens assembly for singlemode optical switches.
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  9. Berthold, John W.; Zhou, Tiansheng; Bush, Ira Jeffrey; McNair, Fred, Fiber optic MEMS seismic sensor with mass supported by hinged beams.
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  10. Berthold, John W.; Needham, David B., Fiber optic seismic sensor based on MEMS cantilever.
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  11. Haake John M. (St. Charles MO), Fiber optic sensor having a multicore optical fiber and an associated sensing method.
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  12. Berthold, John W., Fiber optic sensor system having circulators, Bragg gratings and couplers.
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  13. Sawatari Takeo ; Gaubis Philip A., Fiber optic temperature sensor.
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  14. Huang Chi-Hung, Fiber unbalanced Mach-Zehnder interferometers with flat-top spectral response for application in wavelength division multiplexers.
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  15. Zook, J. David; Herb, William R.; Burns, David W., Fiber-optic vibration sensor based on frequency modulation of light-excited oscillators.
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  16. Gibler, William N.; Jeffers, Larry A.; Lopushansky, Richard L.; Gillham, Frederick J., High intensity fabry-perot sensor.
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  17. Howell, Jim; Masterson, Bernard Patrick; Harris, Rod; Giltner, David; Jobson, Atilio; Estes, Michael John; Sappey, Andrew D., In-furnace retro-reflectors with steerable tunable diode laser absorption spectrometer.
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  18. Jeffers,Larry A.; Berthold,John W.; Lopushansky,Richard L.; Needham,David B., Interferometric signal conditioner for measurement of absolute static displacements and dynamic displacements of a Fabry-Perot interferometer.
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  19. Jeffers,Larry A.; Berthold,John W.; Lopushansky,Richard L., Interferometric signal conditioner for measurement of the absolute length of gaps in a fiber optic Fabry-Perot interferometer.
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  20. Lopushansky,Richard L.; Berthold,John W., Method and apparatus for continuous readout of Fabry-Perot fiber optic sensor.
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  21. Murphy, Daniel J.; Chipper, Robert B.; Sisney, Brent L.; Rester, David H.; Hoggins, James T.; Hudgens, James J., Method and apparatus for effecting alignment in an optical apparatus.
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  22. Murphy, Daniel J.; Chipper, Robert B.; Sisney, Brent L.; Rester, David H.; Hoggins, James T.; Hudgens, James J., Method and apparatus for effecting alignment in an optical apparatus.
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  23. Estes, Michael John; Sappey, Andrew D.; Hofvander, Henrik; Molitoris, Allen; Masterson, Bernard Patrick; Huang, Pei, Method and apparatus for monitoring combustion properties in an interior of a boiler.
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  24. Sisney, Brent L., Method and apparatus for separating or combining optical signals using a dispersive element.
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  25. Sappey, Andrew D.; Masterson, Bernard Patrick; Hofvander, Henrik, Method and apparatus for spectroscopic measurements in the combustion zone of a gas turbine engine.
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  26. Sappey,Andrew D.; Howell,James; Hofvander,Henrik; Masterson,Bernard Patrick, Method and apparatus for the monitoring and control of a process.
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  27. Sappey,Andrew D.; Howell,James; Hofvander,Henrik; Masterson,Bernard Patrick, Method and apparatus for the monitoring and control of a process.
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  28. Sappey,Andrew D; Howell,James; Hofvander,Henrick; Masterson,Bernard Patrick, Method and apparatus for the monitoring and control of combustion.
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  29. Sappey, Andrew D.; Howell, James; Hofvander, Henrik; Masterson, Bernard Patrick, Method for the monitoring and control of a process.
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  30. Needham, David B., Methods and apparatus for measuring multiple Fabry-Perot gaps.
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  31. Masterson, Bernard Patrick; Howell, James; Hofvander, Henrik; Sappey, Andrew D., Mitigation of optical signal noise using a multimode transmit fiber.
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  32. Lopushansky, Richard L.; Jeffers, Larry A.; Berthold, John W., Multi-channel array processor.
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  33. Tselikov, Alexander; Wilde, Jeffrey P.; Blake, James, Optical depolarizer.
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  34. Iga,Mitsuhiro; Watanabe,Kazuhiro; Seki,Atsushi, Optical fiber sensor and measuring apparatus using same.
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  37. Wilde Jeffery P. ; Davis Joseph E. ; Hurst ; Jr. Jerry E. ; Heanue John F. ; Drazan Jeff, Optical system and method using optical fibers for storage and retrieval of information.
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  39. Stuart A. Kingsley ; Sriram S. Sriram ; Meindert Kleefstra, Opto-electric device for measuring the root-mean-square value of an alternating current voltage.
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  40. Mizushima, Yasuyuki; Nakamura, Yoshisada; Takemasa, Katsuya; Sato, Masataka; Takahashi, Hiroki, Preform for plastic optical material, production method thereof, optical coupling method of plastic optical fiber and connector used for optical coupling.
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  41. Heanue, John F.; Hurst, Jr., Jerry E.; Wilde, Jeffrey P., Single frequency laser source for optical data storage system.
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  42. Wilde Jeffrey P. ; Hurst Jerry E. ; Heanue John F., System and method using optical fibers in a data storage and retrieval system.
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  43. Discenzo Frederick M. ; Harris James S., System for determining condition of an article.
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  44. Discenzo, Frederick M., System for monitoring bearing wear.
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  45. Fang Yen, Christopher M.; Popescu, Gabriel; Yang, Changhuei; Wax, Adam; Dasari, Ramachandra R.; Feld, Michael S., Systems and methods for phase measurements.
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  47. Fang-Yen, Christopher; Popescu, Gabriel; Yang, Changhuei; Wax, Adam; Dasari, Ramachandra; Feld, Michael, Systems and methods for phase measurements.
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  48. Simon Wayne R. ; Pogue ; III William R., Technique for location of embedded fiber optic sensors.
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  49. Needham, David B., Tracking algorithm for linear array signal processor for Fabry-Perot cross-correlation pattern and method of using same.
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  50. Lopushansky, Richard, Transducer for measuring environmental parameters.
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