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Sunday, July 5, 2020 | History

3 edition of Effects of radiation damage in optical fibers found in the catalog.

Effects of radiation damage in optical fibers

Thad J Englert

Effects of radiation damage in optical fibers

a tutorial

by Thad J Englert

  • 158 Want to read
  • 36 Currently reading

Published by U.S. Dept. of Commerce, National Telecommunications and Information Administration, National Technical Information Service [distributor] in [Washington, D.C.?], Springfield, VA .
Written in English

    Subjects:
  • Optical fibers,
  • Radiation

  • Edition Notes

    StatementThad J. Englert
    SeriesNTIA contractor report -- 87-38, NTIA contractor reports -- NTIA-CR #87-38
    ContributionsUnited States. National Telecommunications and Information Administration
    The Physical Object
    Paginationiv, 55, [1] p. :
    Number of Pages55
    ID Numbers
    Open LibraryOL14853082M

    Proc. SPIE , Radiation Effects on Optical Materials, pg 2 (12 December ); doi: / Read Abstract + The principle radiation damage effects occurring in optical materials, particularly those produced by energetic particles and gamma rays, are described phenomenologically. Since silica fibers are not transparent in this range (excluding hollow core optical fibers), special fibers based on soft glasses, such as fluoride, chalcogenide, or tellurite, are used [1,2,4]. Due to nonlinear optical effects, it is possible to obtain supercontinuum generation in optical soft-glass fibers of special design [5,6,7,8]. Note.

    5) Effects of GHz radiofrequency radiation emitted from Wi-Fi equipment on microRNA expression in brain tissue. Long-term exposure of GHz RF may lead to adverse effects such as neurodegenerative diseases originated from the alteration of some miRNA expression. Bleaching effects due to radiation alone, light alone, and the synergism of light plus irradiation were independently observed. All visible‐range damage in the pure‐silica‐core fibers in excess of a few tens of dB/km was deduced to arise from activation of precursor states including chloride impurities and process‐induced defects.

    Radiation effects on optical fibers ( words) exact match in snippet view article find links to article electronegativities favors the dopant as a hole trap. Hence greater radiation damage occurs in doped silica glass. To improve radiation resistance of pure. Step-index optical fibers were prepared from preforms fabricated by the CVD method. The germanium silicate core glass in the fibers was doped with varying amounts of antimony, cerium, boron, phosphorus and hydroxyl groups. The effects of such variations in the glass chemistry on the radiation inducted attenuation of the fibers was evaluated.


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Effects of radiation damage in optical fibers by Thad J Englert Download PDF EPUB FB2

Ionizing Radiation Effects in Electronics: From Memories to Imagers delivers comprehensive coverage of the effects of ionizing radiation on state-of-the-art semiconductor devices. The book also offers valuable insight into modern radiation-hardening techniques.

The text begins by providing important background information on radiation effects, their underlying mechanisms, and. Get this from a library.

Effects of radiation damage in optical fibers: a tutorial. [Thad J Englert; United States. National Telecommunications and Information Administration.].

Ionizing Radiation Effects in Electronics: From Memories to Imagers delivers comprehensive coverage of the effects of ionizing radiation on state-of-the-art semiconductor devices. The book also offers valuable insight into modern radiation-hardening text begins by providing important background information on radiation effects, their underlying mechanisms, and the use of Monte.

radiation effects on optical components 5 From the above it is evident that whenever a material, e.g. a dielectric or a semiconductor, is exposed to energetic radiation it can experience a. 2. Radiation effects on optical fibers. In this section, we briefly describe the radiation effects on optical fibers and their impact on the related applications, more details can be found in the recent review.

Three major effects are observed that can impact the functionality of fiber-based technologies: • The radiation induced attenuation Cited by: Ionizing Radiation Effects in Electronics: From Memories to Imagers delivers comprehensive coverage of the effects of ionizing radiation on state-of-the-art semiconductor devices.

The book also offers valuable insight into modern - Selection from Ionizing Radiation Effects in Electronics [Book]. We review the effects of ionizing radiation on various types of optical components including optical fiber sensors and summarize some of their applications in particular environments where the presence of energetic radiation is a concern.

NASA Electronic Parts and Packaging Radiation Effects Summary Database on Commercially Available Optical Fiber, Septem Authors: Melanie N.

Ott, Code Photonics Group. Radiation Effects Expected for Fiber Laser/Amplifier Rare Earth Doped Optical Fiber, Survey Report, March [Show full abstract] mode structure of the radiation in W-type optical fibers is studied, both guided and leaky modes should be taken into account.

View full-text Article. Laser emits radiation from 1 mW (lasers frequently used in optical experiments) to 10 W (moderately powerful argon laser) and beyond. This power is emitted onto a very small surface area (laser light has high coherence, monochromacity, and a small beam width) usually in the range from 10 μm 2 to 1 mm 2.

The attenuation of the optical signals due to both the radiation damage and to the couplings between lengths of optical cable was determined for specimen cables. An ultraviolet-enhanced fiber bundle demonstrated good radiation resistance to a total dose of 10/sup 8/ rad, which is the dose extimated to be received during a 1-y lifetime of the in.

Ionizing Radiation Effects in Electronics: From Memories to Imagers delivers comprehensive coverage of the effects of ionizing radiation on state-of-the-art semiconductor devices. The book also offers valuable insight into modern radiation-hardening techniques.

An optical fiber is a flexible, transparent fiber made by drawing glass or plastic to a diameter slightly thicker than that of a human hair. Optical fibers are used most often as a means to transmit light between the two ends of the fiber and find wide usage in fiber-optic communications, where they permit transmission over longer distances and at higher bandwidths (data transfer rates) than.

This thesis deals with the effects of neutron irradiation on optical fibers, detectors and potential fiber materials. The study of the effects of neutron irradiation on optical fibers revealed that loss of transmission occurs due to irradiation.

This loss is dependent on the radiation dose and also depends on the composition of the fibers. Radiation Effects in Materials Waldemar A.

Monteiro. Categories: Technique\\Materials. Year: optical fibers chem absorption decrease Post a Review. You can write a book review and share your experiences. Other readers will always be interested in your opinion of the books you've read.

Whether you've loved the book. by exposure to radiation. This study was undertaken to estimate the “order-of- magnitude“ of radiation induced performance degradation on some typical fiber optic components.

Data from previous studies can be used as a guide for selecting the components for radiation tests. Effects of nuclear radiation on optical fibres are shortly discussed.

The absence of complete predictive models for the radiation induced attenuation in optical fibres is illustrated by modelling attempts and explained by the wide range of parameters which influence the induced loss. The human eye is sensitive to all of the radiation in the electromagnetic spectrum, especially if that radiation is at very high levels of intensity.

Exposure to intense electromagnetic radiation, including infrared radiation, can damage the lens and cornea of the eye.

This is one reason why staring at the sun is harmful (and unintelligent). Optical Fibers and Optical Fiber S ensors Used in Radiation Monitoring In assessing the behavior of silica optical fibers under irradiation one has to consider several premises which have a major influence on the irradiation induced absorption, and hence on a would-be application of such optical fibers to radiation dosimetry.

The book then: * Explains the effects of radiation on digital commercial devices, including microprocessors and volatile and nonvolatile memories-static random-access memories (SRAMs), dynamic random-access memories (DRAMs), and Flash memories * Examines issues like soft errors, total dose, and displacement damage, together with hardening-by.

intensify radiation damage. Generally, polymers containing aromatic ring structures (e.g. polystyrene) are resistant to radiation effects. Aliphatic polymers exhibit degrees of resistance depending upon their levels of unsaturation and substitution.

Some effects of radiation–such as reduced elongation due to chain scission, may detract.Dear Colleague, Since cancer is the third leading cause of death, radiation-induced damage to DNA is a topic of a paramount importance.

Indeed, radiotherapy and photodynamic therapy are common modalities for treating human cancers, and causing efficient damage to the DNA of tumor cells is their main target.The organization of this book is excellent, covering the most popular works in the field of radiation effects.

The authors for these topics are famous, qualified, and professional at the relative field.