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ASTM E1614-94(2021)

(Guide)

Standard Guide for Procedure for Measuring Ionizing Radiation-Induced Attenuation in Silica-Based Optical Fibers and Cables for Use in Remote Fiber-Optic Spectroscopy and Broadband Systems

Standard Guide for Procedure for Measuring Ionizing Radiation-Induced Attenuation in Silica-Based Optical Fibers and Cables for Use in Remote Fiber-Optic Spectroscopy and Broadband Systems

SIGNIFICANCE AND USE
4.1 Ionizing environments will affect the performance of optical fibers/cables being used to transmit spectroscopic information from a remote location. Determination of the type and magnitude of the spectral attenuation or interferences, or both, produced by the ionizing radiation in the fiber is necessary for evaluating the performance of an optical fiber sensor system.  
4.2 The results of the test can be utilized as a selection criteria for optical fibers used in optical fiber spectroscopic sensor systems.
Note 1: The attenuation of optical fibers generally increases when exposed to ionizing radiation. This is due primarily to the trapping of radiolytic electrons and holes at defect sites in the optical materials, that is, the formation of color centers. The depopulation of these color centers by thermal and/or optical (photobleaching) processes, or both, causes recovery, usually resulting in a decrease in radiation-induced attenuation. Recovery of the attenuation after irradiation depends on many variables, including the temperature of the test sample, the composition of the sample, the spectrum and type of radiation employed, the total dose applied to the test sample, the light level used to measure the attenuation, and the operating spectrum. Under some continuous conditions, recovery is never complete.
SCOPE
1.1 This guide covers a method for measuring the real time, in situ radiation-induced spectral attenuation of multimode, step index, silica optical fibers transmitting unpolarized light. This procedure specifically addresses steady-state ionizing radiation (that is, alpha, beta, gamma, protons, etc.) with appropriate changes in dosimetry, and shielding considerations, depending upon the irradiation source.  
1.2 This test procedure is not intended to test the balance of the optical and non-optical components of an optical fiber-based system, but may be modified to test other components in a continuous irradiation environment.  
1.3 The values stated in SI units are to be regarded as standard. No other units of measurement are included in this standard.  
1.4 This standard does not purport to address all of the safety concerns, if any, associated with its use. It is the responsibility of the user of this standard to establish appropriate safety, health, and environmental practices and determine the applicability of regulatory limitations prior to use.  
1.5 This international standard was developed in accordance with internationally recognized principles on standardization established in the Decision on Principles for the Development of International Standards, Guides and Recommendations issued by the World Trade Organization Technical Barriers to Trade (TBT) Committee.

General Information

Status
Published
Publication Date
31-Aug-2021
ICS
33.180.10 - Fibres and cables
Technical Committee
E13 - Molecular Spectroscopy and Separation Science
Drafting Committee
E13.09 - Fiber Optics, Waveguides, and Optical Sensors
Current Stage
Ref Project

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ASTM E1614-94(2021) - Standard Guide for Procedure for Measuring Ionizing Radiation-Induced Attenuation in Silica-Based Optical Fibers and Cables for Use in Remote Fiber-Optic Spectroscopy and Broadband SystemsASTM E1614-94(2021) - Standard Guide for Procedure for Measuring Ionizing Radiation-Induced Attenuation in Silica-Based Optical Fibers and Cables for Use in Remote Fiber-Optic Spectroscopy and Broadband Systems
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ASTM E1614-94(2021) - Standard Guide for Procedure for Measuring Ionizing Radiation-Induced Attenuation in Silica-Based Optical Fibers and Cables for Use in Remote Fiber-Optic Spectroscopy and Broadband Systems
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This international standard was developed in accordance with internationally recognized principles on standardization established in the Decision on Principles for the
Development of International Standards, Guides and Recommendations issued by the World Trade Organization Technical Barriers to Trade (TBT) Committee.
Designation: E1614 − 94 (Reapproved 2021)
Standard Guide for
Procedure for Measuring Ionizing Radiation-Induced
Attenuation in Silica-Based Optical Fibers and Cables for
Use in Remote Fiber-Optic Spectroscopy and
1
Broadband Systems
This standard is issued under the fixed designation E1614; the number immediately following the designation indicates the year of
original adoption or, in the case of revision, the year of last revision.Anumber in parentheses indicates the year of last reapproval.A
superscript epsilon (´) indicates an editorial change since the last revision or reapproval.
2
1. Scope 2.2 Military Standard:
MIL-STD-2196-(SH)Glossary of Fiber Optic Terms
1.1 This guide covers a method for measuring the real time,
3
2.3 EIA Standards:
in situ radiation-induced spectral attenuation of multimode,
EIA-455-57Optical Fiber End Preparation and Examination
step index, silica optical fibers transmitting unpolarized light.
EIA-455-64ProcedureforMeasuringRadiation-InducedAt-
This procedure specifically addresses steady-state ionizing
tenuation in Optical Fibers and Cables
radiation (that is, alpha, beta, gamma, protons, etc.) with
EIA-455-78A-90Spectral Attenuation Cutback Measure-
appropriatechangesindosimetry,andshieldingconsiderations,
ment for Single-Mode Optical Fibers
depending upon the irradiation source.
3. Terminology
1.2 This test procedure is not intended to test the balance of
the optical and non-optical components of an optical fiber-
3.1 Definitions:
basedsystem,butmaybemodifiedtotestothercomponentsin 3.1.1 Refer to MIL-STD-2196 for the definition of terms
a continuous irradiation environment.
used in this guide.
1.3 The values stated in SI units are to be regarded as
4. Significance and Use
standard. No other units of measurement are included in this
4.1 Ionizing environments will affect the performance of
standard.
optical fibers/cables being used to transmit spectroscopic
1.4 This standard does not purport to address all of the
information from a remote location. Determination of the type
safety concerns, if any, associated with its use. It is the
and magnitude of the spectral attenuation or interferences, or
responsibility of the user of this standard to establish appro-
both, produced by the ionizing radiation in the fiber is
priate safety, health, and environmental practices and deter-
necessary for evaluating the performance of an optical fiber
mine the applicability of regulatory limitations prior to use.
sensor system.
1.5 This international standard was developed in accor-
4.2 The results of the test can be utilized as a selection
dance with internationally recognized principles on standard-
criteria for optical fibers used in optical fiber spectroscopic
ization established in the Decision on Principles for the
sensor systems.
Development of International Standards, Guides and Recom-
NOTE 1—The attenuation of optical fibers generally increases when
mendations issued by the World Trade Organization Technical
exposed to ionizing radiation. This is due primarily to the trapping of
Barriers to Trade (TBT) Committee.
radiolytic electrons and holes at defect sites in the optical materials, that
is, the formation of color centers. The depopulation of these color centers
2. Referenced Documents by thermal and/or optical (photobleaching) processes, or both, causes
recovery, usually resulting in a decrease in radiation-induced attenuation.
2.1 Test or inspection requirements include the following
Recovery of the attenuation after irradiation depends on many variables,
references: including the temperature of the test sample, the composition of the
sample, the spectrum and type of radiation employed, the total dose
applied to the test sample, the light level used to measure the attenuation,
1
This guide is under the jurisdiction of ASTM Committee E13 on Molecular
2
Spectroscopy and Separation Science and is the direct responsibility of Subcom- Available from DLA Document Services, Building 4/D, 700 Robbins Ave.,
mittee E13.09 on Fiber Optics, Waveguides, and Optical Sensors. Philadelphia, PA 19111-5094, Philadelphia, PA 19111-5094, http://
Current edition approved Sept. 1, 2021. Published September 2021. Originally quicksearch.dla.mil.
3
approved in 1994. Last previous edition approved in 2013 as E1614 – 94 (2013). Available from Electronic Industries Alliance (EIA), 2500 Wilson Blvd.,
DOI: 10.1520/E1614-94R21. Arlington, VA 22201.
Copyright © ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959. United States
1

---------------------- Page: 1 ----------------------
E1614 − 94 (2021)
and the operating spectrum. Under some continuous conditions, recovery
or
...

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4.1 Ionizing environments will affect the performance of optical fibers/cables being used to transmit spectroscopic information from a remote location. Determination of the type and magnitude of the spectral variations or interferences produced by the ionizing radiation in the fiber, or both, is necessary for evaluating the performance of an optical fiber sensor system.  
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4.1 Ionizing environments will affect the performance of optical fibers/cables being used to transmit spectroscopic information from a remote location. Determination of the type and magnitude of the spectral variations or interferences produced by the ionizing radiation in the fiber, or both, is necessary for evaluating the performance of an optical fiber sensor system.  
4.2 The results of the test can be utilized as a selection criteria for optical fibers used in optical fiber Raman spectroscopic sensor systems.
Note 1: The attenuation of optical fibers generally increases when they are exposed to ionizing radiation. This is due primarily to the trapping of radiolytic electrons and holes at defect sites in the optical materials, that is, the formation of color centers. The depopulation of these color centers by thermal or optical (photobleaching) processes, or both, causes recovery, usually resulting in a decrease in radiationinduced attenuation. Recovery of the attenuation after irradiation depends on many variables, including the temperature of the test sample, the composition of the sample, the spectrum and type of radiation employed, the total dose applied to the test sample, the light level used to measure the attenuation, and the operating spectrum. Under some continuous conditions, recovery is never complete.
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This specification covers general requirements for flat-rolled stainless and heat-resisting steel plate, sheet, and strip. The steel shall be made by one of the following processes: electric-arc, electric-induction, or other suitable processes. Heat and product analyses shall conform to the chemical requirements for each of the specific elements. The material shall undergo mechanical tests such as tension test, hardness test, and bend test. Special tests like intergranular corrosion test, permeability test, Charpy impact testing and tests for detrimental intermetallic phases in wrought duplex stainless steels shall be also be performed when required.
SCOPE
1.1 This specification2 covers a group of general requirements that, unless otherwise specified in the purchase order or in an individual specification, shall apply to rolled steel plate, sheet, and strip, under each of the following specifications issued by ASTM: Specifications A240/A240M, A263, A264, A265, A666, A693, A793, and A895.  
1.2 In the case of conflict between a requirement of a product specification and a requirement of this specification, the product specification shall prevail. In the case of conflict between a requirement of the product specification or a requirement of this specification and a more stringent requirement of the purchase order, the purchase order shall prevail. The purchase order requirements shall not take precedence if they, in any way, violate the requirements of the product specification or this specification; for example, by waiving a test requirement or by making a test requirement less stringent.  
1.3 The values stated in either SI units or inch-pound units are to be regarded separately as standard. The SI units are shown in brackets, except that when A480M is specified, Annex A3 shall apply for the dimensional tolerances and not the bracketed SI values in Annex A2. The values stated in each system are not necessarily exact equivalents; therefore, to ensure conformance with the standard, each system shall be used independently of the other, and values from the two systems shall not be combined.  
1.4 This specification and the applicable material specifications are expressed in both inch-pound and SI units. However, unless the order specifies the applicable “M” specification designation [SI units], the material shall be furnished in inch-pound units.  
1.5 This international standard was developed in accordance with internationally recognized principles on standardization established in the Decision on Principles for the Development of International Standards, Guides and Recommendations issued by the World Trade Organization Technical Barriers to Trade (TBT) Committee.

  • Technical specification
    26 pages
    English language
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  • Technical specification
    26 pages
    English language
    sale 15% off