+ Visit NASA.gov + Contact NASA   + Home Select Search Field * All Report - Patent Number Abstract *Accession Number *NASA Center *Author NameDocument IDKeywordsPublication Date *Title * Find Results With All of the words At least one of the words Enter Search Term  within returned results    Search Tips: Use only the fields with * to search NIX collection. Enclose terms in double quotation marks (") to search for exact phrases, ie: "space shuttle". NOTE: Commas and dashes are removed from search term by search engine. Select Reset Search button to start a new search. See Help for more tips. + Publication Year + Subject + Availability Options + Item/Media Type Selected Navigations: Author > Adamovsky, Grigory [x] Sort results by: NASA Center | Date Added to NTRS | Publication Year There are a total of 32 record(s) matching your query. Sorted by: Date Added To NTRS in Descending order 1 2 3 4 Next  Fiber optic sensors with internal referencing Author(s): Adamovsky, Grigory; Maitland, Duncan J., IV Abstract: The main problem with amplitude modulating type sensors is that any variation in the intensity of the optical signal which occurs throughout the sensing system is interpreted by the photodetector as resulting from the sensor ... NASA Center: Glenn Research Center Publication Year: 1988 Added to NTRS: 2008-09-05 Accession Number: 88N26644; Document ID: 19880017260; Report Number: E-4134, NAS 1.15:100893, NASA-TM-100893 Fiber-Optic Bragg Gratings and Optical Holography Compared as Vibration Detectors Author(s): Adamovsky, Grigory Abstract: The NASA Glenn Research Center is interested in determining structural damage in engine components during flight to evaluate the health of aerospace propulsion systems. On the ground, we can use holography to detect ... NASA Center: Glenn Research Center Publication Year: 2003 Added to NTRS: 2008-06-02 Document ID: 20050214790 Scanning Mode Shock Position Sensor Invented and Demonstrated Author(s): Adamovsky, Grigory Abstract: A flow-visualizing system with a scanning optical beam offers greater advantages than the conventional approaches. In addition to a higher signal-to-noise ratio and lower source power, the scanning permits visualization of ... NASA Center: Glenn Research Center Publication Year: 1999 Added to NTRS: 2008-06-02 Document ID: 20050188496 Reannealed Fiber Bragg Gratings Demonstrated High Repeatability in Temperature Measurements Author(s): Adamovsky, Grigory; Juergens, Jeffrey R. Abstract: Fiber Bragg gratings (FBGs) are formed by periodic variations of the refractive index of an optical fiber. These periodic variations allow an FBG to act as an embedded optical filter, passing the majority of light ... NASA Center: Glenn Research Center Publication Year: 2004 Added to NTRS: 2008-06-02 Document ID: 20050192409 Optical techniques for determination of normal shock position in supersonic flows for aerospace applications Author(s): Adamovsky, Grigory; Eustace, John G. Abstract: Techniques for the quantitative determination of shock position in supersonic flows using direct and indirect methods is presented. A description of an experimental setup is also presented, different configurations of shock ... NASA Center: Glenn Research Center Publication Year: 1990 Added to NTRS: 2007-05-31 Accession Number: 90N25323; Document ID: 19900016007; Report Number: E-5599, NAS 1.15:103201, NASA-TM-103201 Fiber Bragg Gratings Operated at 1000 C Author(s): Adamovsky, Grigory Abstract: Fiber Bragg gratings are formed by periodic variations of the refractive index in the core of an optical fiber. These periodic variations allow a fiber Bragg grating to pass the majority of light propagating through a fiber ... NASA Center: Glenn Research Center Publication Year: 2006 Added to NTRS: 2006-12-18 Document ID: 20060054054 Referencing in fiber optic sensing systems Author(s): Adamovsky, Grigory Abstract: Different techniques to account for losses induced by the environment on signals in intensity modulation fiber optic sensing systems are described and analyzed. NASA Center: Glenn Research Center Publication Year: 1987 Added to NTRS: 2005-10-13 Accession Number: 87N20475; Document ID: 19870011042; Report Number: E-3468, NAS 1.15:89822, NASA-TM-89822 Performance Evaluation of Fiber Bragg Gratings at Elevated Temperatures Author(s): Juergens, Jeffrey; Adamovsky, Grigory; Floyd, Bertram Abstract: The development of integrated fiber optic sensors for smart propulsion systems demands that the sensors be able to perform in extreme environments. In order to use fiber optic sensors effectively in an extreme environment ... NASA Center: Glenn Research Center Publication Year: 2004 Added to NTRS: 2005-10-13 Document ID: 20040033930; Report Number: E-14303, NASA/TM-2004-212888 Amplitude spectrum modulation technique for analog data processing in fiber optic sensing system with temporal separation of channels Author(s): Adamovsky, Grigory Abstract: A novel technique to analyze data in fiber optic sensing systems with temporal separation of channels is proposed. A theoretical explanation of the process is presented and an experimental setup that was used to obtain the ... NASA Center: Glenn Research Center Publication Year: 1987 Added to NTRS: 2005-10-13 Accession Number: 89N18671; Document ID: 19890009300; Report Number: E-3714, NAS 1.15:100152, NASA-TM-100152 Three-Arm, Self-Referencing Fiber-Optic Sensor Author(s): Adamovsky, Grigory Abstract: Sensor reading relatively immune to spurious variations in illumination and transmission. No separate reference channel necessary; provides own internal reference. Illumination for sensor provided by pulsed source of light. ... NASA Center: Glenn Research Center Publication Year: 1993 Added to NTRS: 2005-09-30 Accession Number: 93B10500; Document ID: 19930000500; Report Number: LEW-15019 1 2 3 4 Next  + Back to Top + Sponsored by the NASA Scientific and Technical    Information Program + 2004 Vision for Space Exploration + Freedom of Information Act + NASA Web Privacy Policy and Important Notices + NASA Disclaimers, Copyright Notice,    and Terms and Conditions of Use NASA Official: Calvin Mackey Page Curator: NASA Center for AeroSpace Information (help@sti.nasa.gov) Last Updated: July 5, 2007