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  • 1
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    Fiber optic probes for laser light scattering: Ground based evaluation for micgrogravity flight experimentation. Integrated coherent imaging fiber optic systems for laser light scattering and other applications (1994)
    In:  CASI
    Details
    Publication Date: 2019-06-28
    Description: The research work presented in this report has established a new class of backscatter fiber optics probes for remote dynamic light scattering capability over a range of scattering angles from 94 degrees to 175 degrees. The fiber optic probes provide remote access to scattering systems, and can be utilized in either a noninvasive or invasive configuration. The fiber optics create an interference free data channel to inaccessible and harsh environments. Results from several studies of concentrated suspension, microemulsions, and protein systems are presented. The second part of the report describes the development of a new technology of wavefront processing within the optical fiber, that is, integrated fiber optics. Results have been very encouraging and the technology promises to have significant impact on the development of fiber optic sensors in a variety of fields ranging from environmental monitoring to optical recording, from biomedical sensing to photolithography.
    Keywords: OPTICS
    Type: NASA-CR-194377 , NAS 1.26:194377
    Format: application/pdf
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    NASA TECHNICAL REPORTS
  • 2
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    Development of a fiber optic compressor blade sensor (1995)
    In:  CASI
    Details
    Publication Date: 2019-07-13
    Description: A complete working prototype of the fiber optic blade tip sensor was first tested in the laboratory, followed by a thorough evaluation at NASA W8 Single Compressor Stage Facility in Lewis Research Center. Subsequently, a complete system with three parallel channels was fabricated and delivered to Dr. Kurkov. The final system was tested in the Subsonic Wind Tunnel Facility, in parallel with The General Electric Company's light probe system. The results at all operating speeds were comparable. This report provides a brief description of the system and presents a summary of the experimental results.
    Keywords: INSTRUMENTATION AND PHOTOGRAPHY
    Type: NASA-CR-199298 , NAS 1.26:199298
    Format: application/pdf
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    NASA TECHNICAL REPORTS
  • 3
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    Dynamic Light Scattering With Improved Fiber-Optic Probes (1995)
    In:  Other Sources
    Details
    Publication Date: 2019-07-13
    Description: Improved fiber-optic probes developed for use in dynamic light-scattering measurements. Intended for measuring dynamic backscattering of laser light from concentrated suspensions of particles in liquids, for purpose of determining statistical distributions of sizes of particles. Offers advantages of compactness and ruggedness, and more suitable for industrial environments. Probes immersed in suspensions characterized. Associated lasers, photodetectors, and signal-processing circuits located remotely in safer environments, coupled to probes via optical fibers.
    Keywords: PHYSICAL SCIENCES
    Type: LEW-15461 , NASA Tech Briefs (ISSN 0145-319X); 19; 9; P. 86
    Format: text
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    NASA TECHNICAL REPORTS
  • 4
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    Multiple-Fiber-Optic Probe For Light-Scattering Measurements (1996)
    In:  Other Sources
    Details
    Publication Date: 2019-07-13
    Description: Multiple-fiber-optical probe developed for use in measuring light scattered at various angles from specimens of materials. Designed for both static and dynamic light-scattering measurements of colloidal dispersions. Probe compact, rugged unit containing no moving parts and remains stationary during operation. Not restricted to operation in controlled, research-laboratory environment. Positioned inside or outside light-scattering chamber. Provides simultaneous measurements at small angular intervals over range of angles, made to include small scattering angles by orienting probe in appropriate direction.
    Keywords: PHYSICAL SCIENCES
    Type: LEW-15460 , NASA Tech Briefs (ISSN 0145-319X); 20; 2; P. 4a
    Format: text
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    NASA TECHNICAL REPORTS
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