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There are a total of 27 record(s) matching your query.
Sorted by: Date Added To NTRS in Descending order
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Fiber-optic temperature sensor using a spectrum-modulating semiconductor etalon
Author(s): Beheim, Glenn; Anthan, Donald J.; Beheim, Glenn; Anthan, Donald J.
Abstract: Described is a fiber-optic temperature sensor that uses a spectrum modulating SiC etalon. The spectral output of this type of sensor may be analyzed to obtain a temperature measurement which is largely independent of the ...
NASA Center: Glenn Research Center
Publication Year: 1987
Added to NTRS: 2005-10-13
Accession Number: 87N25329; Document ID: 19870015896; Report Number: E-3715, NAS 1.15:100153, NASA-TM-100153
Spectrum-modulating fiber-optic sensors for aircraft control systems
Author(s): Beheim, Glenn; Fritsch, Klaus
Abstract: A family of fiber-optic sensors for aircraft engine control systems is described. Each of these sensors uses a spectrum-modulation method to obtain an output which is largely independent of the fiber link transmissivity. A ...
NASA Center: Glenn Research Center
Publication Year: 1987
Added to NTRS: 2005-10-13
Accession Number: 87N17700; Document ID: 19870008267; Report Number: E-3436, NAS 1.15:88968, NASA-TM-88968
Spectrum-Modulating Fiber-Optic Sensors
Author(s): Beheim, Glenn; Fritsch, Klaus
Abstract: Family of spectrum-modulating fiber-optic sensors undergoing development for use in aircraft-engine control systems. Fiber-optic sensors offer advantages of small size, high bandwidth, immunity to electromagnetic ...
NASA Center: Glenn Research Center
Publication Year: 1989
Added to NTRS: 2005-09-30
Accession Number: 89B10154; Document ID: 19890000154; Report Number: LEW-14662
Silicon-Etalon Fiber-Optic Temperature Sensor
Author(s): Beheim, Glenn; Fritsch, Klaus; Flatico, Joseph M.; Azar, Massood Tabib
Abstract: Developmental temperature sensor consists of silicon Fabry-Perot etalon attached to end of optical fiber. Features immunity to electrical interference, small size, light weight, safety, and chemical inertness. Output encoded ...
NASA Center: Glenn Research Center
Publication Year: 1993
Added to NTRS: 2005-09-30
Accession Number: 93B10324; Document ID: 19930000324; Report Number: LEW-15117
Phase-Compensating System For Fiber-Optic Holography
Author(s): Mercer, Carolyn R.; Beheim, Glenn
Abstract: Phase-compensating system controls relative phase of laser light emitted from two optical fibers. Stabilized for conventional holographic applications, or stepped through sequence of 90 degree phase shifts for phase-stepping ...
NASA Center: Glenn Research Center
Publication Year: 1990
Added to NTRS: 2005-09-30
Accession Number: 90B10262; Document ID: 19900000262; Report Number: LEW-14864
Projected-Fringe, Phase-Stepping Profilometer
Author(s): Mercer, Carolyn; Beheim, Glenn
Abstract: Projected-fringe, phase-stepping profilometer is system of optical, electronic, optoelectronic, and electro-optical equipment measuring surface profiles of objects. Projects optical interference pattern onto object and steps ...
NASA Center: Glenn Research Center
Publication Year: 1992
Added to NTRS: 2005-09-30
Accession Number: 92B10506; Document ID: 19920000506; Report Number: LEW-14996
Loss-Compensated Optical Sensor Systems
Author(s): Beheim, Glenn; Anthan, Donald J.
Abstract: Variations in fiber losses little effect on outputs. Fiber-optic sensing system conceptually related to electrical bridge circuit scarcely affected by variations in losses of optical fibers and connectors. Versions of system ...
NASA Center: Glenn Research Center
Publication Year: 1988
Added to NTRS: 2005-09-30
Accession Number: 88B10092; Document ID: 19880000092; Report Number: LEW-14547
Integrated Optical Micromachined Pressure Sensors with Spectrally Encoded Output and Temperature Compensation
Author(s): DeBrabander, Gregory N.; Beheim, Glenn; Boyd, Joseph T.
Abstract: A promising type of optical pressure sensor combines an integrated optical interferometer with a micromachined diaphragm on a shared silicon substrate. We have demonstrated a sensor of this type which uses an unbalanced ...
NASA Center: Glenn Research Center
Publication Year: 1997
Added to NTRS: 2005-08-25
Accession Number: 97N30794; Document ID: 19970037292; Report Number: NAS 1.26:112547, NASA/CR-97-112547
Silicon-etalon fiber-optic temperature sensor
Author(s): Beheim, Glenn; Fritsch, Klaus; Flatico, Joseph M.; Azar, Massood Tabib
Abstract: A temperature sensor is described which consists of a silicon etalon that is sputtered directly onto the end of an optical fiber. A two-layer protective cap structure is used to improve the sensor's long-term stability. The ...
NASA Center: Glenn Research Center
Publication Year: 1989
Added to NTRS: 2005-08-25
Accession Number: 90N13381; Document ID: 19900004065; Report Number: E-5130, NAS 1.15:102389, NASA-TM-102389
Calculated coupling efficiency between an elliptical-core optical fiber and a silicon oxynitride rib waveguide
Author(s): Tuma, Margaret L.; Beheim, Glenn
Abstract: The effective-index method and Marcatili's technique were utilized independently to calculate the electric field profile of a rib channel waveguide. Using the electric field profile calculated from each method, the ...
NASA Center: Glenn Research Center
Publication Year: 1995
Added to NTRS: 2005-08-25
Accession Number: 95N22915; Document ID: 19950016498; Report Number: E-9438, NAS 1.15:106850, NASA-TM-106850
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