ASTM E1653-94(1999)

NOTICE: This standard has either been superseded and replaced by a new version or withdrawn.
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Designation:E1653–94 (Reapproved 1999)
Standard Guide for
Specifying Dynamic Characteristics of Optical Radiation
Transmitting Fiber Waveguides
This standard is issued under the fixed designation E1653; 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 (e) indicates an editorial change since the last revision or reapproval.
1. Scope who are concerned with dynamic performance. Users of
fiber-optic waveguides can use this guide to determine that
1.1 This guide covers the key parameters that determine the
their waveguides are adequately characterized for their in-
dynamic performance of an optical radiation transmitting fiber
tended application.
waveguide (see Note 1). For the purpose of this guide, optical
radiation is electromagnetic radiation of wavelengths from
5. Key Dynamic Characteristics
about 200 to about 5000 nm (correspondingly, frequencies of
−1 −1 5.1 Dynamic characteristics and dynamic performance, for
50000cm to2000cm ,andphotonenergiesof6eVto0.25
the purposes of this guide, have to do with the time- or
eV).
frequency-domain response of a fiber-optic waveguide to
NOTE 1—Typical designations of radiation transmitting fiber
pulsed or sinusoidally modulated optical radiation. Fig. 1 and
waveguides include optical waveguide, fiber-optic, fiber-optic waveguide,
Fig. 2 show hypothetical outputs of an optical fiber to pulsed
and fiber-optic radiation guide.
and sinusoidally modulated radiation inputs. (Either the time-
1.2 This standard does not purport to address all of the
or the frequency-domain can be used to characterize the
safety concerns, if any, associated with its use. It is the
temporal features of a fiber-optic waveguide, because the two
responsibility of the user of this standard to establish appro-
arerelatedthroughtheFouriertransform.)Itisthisresponse,as
priate safety and health practices and determine the applica-
it is affected by launch condition, input radiant flux, wave-
bility of regulatory limitations prior to use.
length, bend radii, temperature, and spatial position across the
face of a fiber-optic waveguide, that is the concern of this
2. Referenced Documents
guide.
2.1 ASTM Standards:
5.2 Ideal Fiber-Optic—Featuresthatwouldbepossessedby
E 131 Terminology Relating to Molecular Spectroscopy
an ideal fiber-optic waveguide provide a basis for discussing
the key parameters that determine the dynamic aspects of a
3. Terminology
fiber-optic waveguide. An ideal fiber-optic radiation guide
3.1 Definition of Terms and Symbols—For Definitions of
would have the following features.
terms and symbols, refer to Terminology E131.
5.2.1 Alargenumericalaperture,suchthatnoncollimatedor
poorly collimated radiation sources (for example, arc lamps)
4. Significance and Use
could be coupled to it effectively.
4.1 Many characteristics of a fiber-optic waveguide affect
5.2.2 Wide transmissive (spectral) bandwidth, within the
the dynamic performance. Quantitative values of certain key
range from 200 to 5000 nm, so that experiments requiring
parameters (characteristics) need to be known, a priori,in
ultraviolet (UV), visible, and IR radiation may be performed
order to predict or evaluate the dynamic performance of a
with the minimum change in radiation guides.
waveguide for specific conditions of use. This guide identifies
5.2.3 Wide temporal bandwidth (gigahertz; picosecond to
thesekeyparametersandprovidesinformationontheirsignifi-
femtosecond), so that time resolution would not be compro-
cance and how they affect performance. However, this guide
mised, and that high data-transfer would be possible.
doesnotdescribehowtheneededquantitativeinformationisto
5.2.4 Known temporal response (although not necessarily
be obtained. Manufacturers of fiber-optic waveguides can use
constant) across the spectral bandwidth, so that a researcher
this guide for characterizing their products suitably for users
could determine how using a fiber-optic waveguide might
compromise particular experiments.
5.3 Key Parameters—A great many parameters must be
This guide is under the jurisdiction of ASTM Committee E-13 on Molecular
known, ultimately, to use fiber-optic radiation guides most
Spectroscopy and is the direct responsibility of Subcommittee E13.09 on Fiber
Optics in Molecular Spectroscopy.
effectively. The following are seven of the key parameters that
Current edition approved Dec. 15, 1994. Published February 1995.
determine the dynamic aspects of a fiber-optic radiation guide.
Annual Book of ASTM Standards, Vol 03.06.
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