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Tuesday, May 19, 2020 | History

3 edition of Spectral contents readout of birefringent sensor found in the catalog.

Spectral contents readout of birefringent sensor

Spectral contents readout of birefringent sensor

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  • 18 Currently reading

Published by National Aeronautics and Space Administration, Ames Research Center, Dryden Flight Research Facility in Edwards, Calif .
Written in English

    Subjects:
  • Optics.,
  • Light.

  • Edition Notes

    StatementAlex S. Redner.
    SeriesNASA contractor report -- 179444., NASA contractor report -- NASA CR-179444.
    ContributionsDryden Flight Research Facility.
    The Physical Object
    FormatMicroform
    Pagination1 v.
    ID Numbers
    Open LibraryOL17659316M

    Hyperspectral Satellites and System Design is the first book on this subject. It provides a systematic analysis and detailed design of the entire development process of hyperspectral satellites. Derived from the author’s year firsthand experience as a technical lead of space missions at the Can. The spectral interferograms with the equalization wavelength are processed to retrieve the phase as a function of the wavelength. From the retrieved phase functions corresponding to different elongations of a two-mode birefringent side-hole fiber under test, the spectral strain sensitivity is by: 4.

    In single mode fiber optic sensor systems we are generally using interferometry to transduce very high frequency electric field oscillations (10 14 –10 15 Hz in the visible) to intensity modulations (Chapter 7). Measurands then induce a change in the optical phase, frequency or polarization state of the by: 4.   SPIE Digital Library Proceedings. Proc. SPIE , Emerging Imaging and Sensing Technologies for Security and Defence II, (6 October ); doi: /

    Fiber-Optic, Photoelastic, Pressure Sensor for High-Temperature Gases: Strainoptic Technologies Inc. Alex Redner, $50, PA: N/A (SBIR ) Spectral Contents Readout of Birefringent Sensors: Strainoptic Technologies Inc. Alex Redner, $50, PA: N/A: ARC: (SBIR ) Spectral Contents Readout. Photoelastic measurements by means of computer-assisted spectral-contents analysis Alex S. Redner (Experimental Mechanics ) Application of birefringent coatings to glass-fiber- reinforced plastics J.W. Dally, I. Alfirevich (Experimental Mechanics ) Sensors Fiber-optic acceleration sensor based on the photoelastic effect.


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Spectral contents readout of birefringent sensor Download PDF EPUB FB2

Feasibility of using SPECTRAL CONTENTS ANALYSIS to measure accurately, strains and retardation in BIREFRINGENT SENSORS, and more generally, on transparent materials. Description of the Work Carried Out Transparent materials subjected to strain develop birefringence.

A sequence of colors can be observed when a stressed material isAuthor: Alex S. Redner. for use as a sensor at room temperature. For elevated temperature use, fused silica was found factory.

This material was extensively evaluated and CONSTANT calibrated up to I ° C ( ° F). most satis-its BREWSTER b. The SPECTRAL CONTENTS ANALYSIS METIIOD was fully developed and a working prototype was produced.

Methods were developed to measure. Get this from a library. Spectral contents readout of birefringent sensor. [Alex S Redner; Dryden Flight Research Facility.]. COVID Resources. Reliable information about the coronavirus (COVID) is available from the World Health Organization (current situation, international travel).Numerous and frequently-updated resource results are available from this ’s WebJunction has pulled together information and resources to assist library staff as they consider how to handle coronavirus.

The technical objective of this research program was to develop a birefringent sensor, capable of measuring strain/stress up to F and a readout system based on Spectral Contents analysis. As a result of the research work, a data acquisition system was developed, capable of measuring strain birefringence in a sensor at F, with multi-point static and dynamic : Alex S.

Redner. Stresses and strains measured optically at temperatures up to 2, degrees F. Spectrum of light processed through polarizer, sensor, analyzer, and associated optical components measured and processed to extract amount of retardation and, equivalently, stress-induced birefringence in : Alex S.

Redner. 20 November Spectral Contents Analysis Of Birefringent Sensors. Alex S. Redner. Author Affiliations + Proceedings VolumeFringe Pattern Analysis; () https BPDI based optical sensor for real time high temperature measurements Proceedings of SPIE (September 09 )Author: Alex S.

Redner. A spectral-contents-analysis approach may help to revive this old, but still useful technique. Light intensity of the beam passed through the stressed specimen contains all the information necessary to automatically extract the value of retardation.

This is done by using a photodiode array to investigate the spectral contents of the light by: Spectral-Domain Measurements of Birefringence and Sensing Characteristics of a Side-Hole Microstructured Available via license: CC BY Content may be subject to copyright.

Furthermore, it enables the potential of making the instrument ultra-compact, thereby improving the portability of the sensor. By combining a birefringent interferometer with a lenslet array, the. We experimentally characterized a birefringent side-hole microstructured fiber in the visible wavelength region.

The spectral dependence of the group and phase modal birefringence was measured using the methods of spectral interferometry. The phase modal birefringence of the investigated fiber increases with wavelength, but its positive sign is opposite to the sign of the group modal Cited by: faster readout, lower power consumption, higher noise immunity, and a smaller system size.

Figure 5. CMOS sensor Calibrating a CMOS sensor in production, if needed, can be more difficult than calibrating a CCD sensor. But technology development has made CMOS sensors easier to calibrate, and some are nowadays even self-calibrating.

Figure 6. A simple design involving a birefringent porous glass oriented between two crossed polarizers serves as the foundation for an optically based sensitive bro Sensitive Chemical Optic Sensor Using Birefringent Porous Glass for the Detection of Volatile Organic Compounds - IEEE Journals & MagazineCited by: 6.

Various types of image sensors covering a wide spectral response range for photometry Hamamatsu develops and produces advanced image sensors for measurement applications in wide spectral and energy ranges including infrared, visible, ultraviolet, vacuum ultraviolet, soft X-rays and hard X-rays.

Photoelastic transducer for high-temperature applications INTRODUCTION The concept of a birefringent transducer is similar to the strain gage transducer. In an integrated transducer system (Figure 1), the following elements must be incorporated and designed to meet the special output and environmental requireâ ments: a.

The sensor was fabricated on a specially designed birefringent D-shape fiber made of silica glass, which exhibits modal birefringence of the order of 10 −5 and allows for direct deposition of a metal layer in the vicinity of the core.

The sensor characteristics measured using the spectral interferometry method were compared with the reference Cited by: 2. For example, an Offner–Chrisp imaging spectrometer often has between and spectral and about spatial samples or aboutindividual measurements in a single readout of the focal plane array.

To collect a scene the FPA is read out thousands of times. Analysis of Birefringent Optical Systems Birefringent Effects in Bragg Gratings. 8 Digital Switches and Counters Introduction Scan Modes Excess Gain Contrast Beam Diameter Electro-Optic Interface Applications.

9 Displacement Sensors Introduction Reflective Technology Microbending Technology. The experimental setup used in the application of spectral-domain interferometry to resolve spectral interference fringes in a tandem configuration of birefringent crystal and birefringent fiber is shown in Fig.

It consists of a white-light source, a 20 W quartz tungsten halogen (QTH) lamp with a collimating lens, a polarizer, a quartz Cited by: is a basic example of using the spectral content of an image to enrich and From Image Sensors to Spectral Sensors Technology Fusion to Enable a Smarter World spectral sensor are in development, a VIS version covering the wavelength range from – File Size: KB.

The group modal birefringence dispersion can be measured by a method of spectral-domain tandem interferometry [18,19] utilizing the experimental setup shown in Figure this setup, the path length difference, Δ M, adjusted in a Michelson interferometer (MI) compensates for the group optical path difference, G(λ)z, between the polarization modes in a fiber under test (FUT) of length by:   Compact snapshot birefringent imaging Fourier transform spectrometer for remote sensing and endoscopy.

In Electro-Optical Remote Sensing, Photonic Technologies, and Applications VI [] (Proceedings of SPIE - The International Society for Optical Engineering; Vol. ).Cited by: 5.The Fundamentals of Camera and Image Sensor Technology Jon Chouinard.

between the individual Pixel cells and multiple A/D circuits in column readout. CMOS is more resistant to Smearing or Blooming than a CCD! • 1/3” Sensor Format ideally should be paired with 1/3” format lens.