oSIST prEN IEC 60793-2-50:2023
(Main)Optical fibres - Part 2-50: Product specifications - Sectional specification for class B singlemode fibres
Optical fibres - Part 2-50: Product specifications - Sectional specification for class B singlemode fibres
Lichtwellenleiter - Teil 2-50: Produktspezifikationen - Rahmenspezifikation für Einmodenfasern der Kategorie B
Fibres optiques - Partie 2-50: Spécifications de produits - Spécification intermédiaire pour les fibres unimodales de classe B
Optična vlakna - 2-50. del: Specifikacije izdelka - Področna specifikacija za enorodovna vlakna razreda B
General Information
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Standards Content (Sample)
SLOVENSKI STANDARD
oSIST prEN IEC 60793-2-50:2023
01-junij-2023
Optična vlakna - 2-50. del: Specifikacije izdelka - Področna specifikacija za
enorodovna vlakna razreda B
Optical fibres - Part 2-50: Product specifications - Sectional specification for class B
singlemode fibres
Lichtwellenleiter - Teil 2-50: Produktspezifikationen - Rahmenspezifikation für
Einmodenfasern der Kategorie B
Fibres optiques - Partie 2-50: Spécifications de produits - Spécification intermédiaire
pour les fibres unimodales de classe B
Ta slovenski standard je istoveten z: prEN IEC 60793-2-50:2023
ICS:
33.180.10 (Optična) vlakna in kabli Fibres and cables
oSIST prEN IEC 60793-2-50:2023 en
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.
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oSIST prEN IEC 60793-2-50:2023
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oSIST prEN IEC 60793-2-50:2023
86A/2301/CDV
COMMITTEE DRAFT FOR VOTE (CDV)
PROJECT NUMBER:
IEC 60793-2-50 ED7
DATE OF CIRCULATION: CLOSING DATE FOR VOTING:
2023-03-31 2023-06-23
SUPERSEDES DOCUMENTS:
86A/2225/CD, 86A/2293/CC
IEC SC 86A : FIBRES AND CABLES
SECRETARIAT: SECRETARY:
France Mr Laurent Gasca
OF INTEREST TO THE FOLLOWING COMMITTEES: PROPOSED HORIZONTAL STANDARD:
SC 86B,SC 86C,ISO/IEC JTC 1/SC 25
Other TC/SCs are requested to indicate their interest, if
any, in this CDV to the secretary.
FUNCTIONS CONCERNED:
EMC ENVIRONMENT QUALITY ASSURANCE SAFETY
SUBMITTED FOR CENELEC PARALLEL VOTING NOT SUBMITTED FOR CENELEC PARALLEL VOTING
Attention IEC-CENELEC parallel voting
The attention of IEC National Committees, members of
CENELEC, is drawn to the fact that this Committee Draft
for Vote (CDV) is submitted for parallel voting.
The CENELEC members are invited to vote through the
CENELEC online voting system.
This document is still under study and subject to change. It should not be used for reference purposes.
Recipients of this document are invited to submit, with their comments, notification of
• any relevant patent rights of which they are aware and to provide supporting documentation,
• any relevant “in some countries” clauses to be included should this proposal proceed. Recipients are
reminded that the enquiry stage is the final stage for submitting "in some countries" clauses. See
AC/22/2007.
TITLE:
Optical fibres - Part 2-50: Product specifications - Sectional specification for class B single-
mode fibres
PROPOSED STABILITY DATE: 2027
NOTE FROM TC/SC OFFICERS:
Copyright © 2023 International Electrotechnical Commission, IEC. All rights reserved. It is permitted to
download this electronic file, to make a copy and to print out the content for the sole purpose of preparing National
Committee positions. You may not copy or "mirror" the file or printed version of the document, or any part of it, for
any other purpose without permission in writing from IEC.
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IEC CDV 60793-2-50/Ed7 © IEC 2023 – 2 – 86A/2301/CDV
1 CONTENTS
2 FOREWORD . 5
3 1 Scope . 7
4 2 Normative references . 8
5 3 Terms and definitions . 9
6 4 Abbreviated terms and symbols . 10
7 5 Specifications . 10
8 5.1 General . 10
9 5.2 Dimensional requirements . 10
10 5.3 Mechanical requirements . 11
11 5.4 Transmission requirements . 12
12 5.5 Environmental requirements . 14
13 5.5.1 General . 14
14 5.5.2 Optical environmental requirements – Attenuation . 14
15 5.5.3 Mechanical environmental requirements . 15
16 Annex A (normative) Family specification for category B-652 Dispersion unshifted
17 single-mode fibres . 16
18 A.1 General . 16
19 A.2 Dimensional requirements . 16
20 A.3 Mechanical requirements . 17
21 A.4 Transmission requirements . 17
22 A.5 Hydrogen ageing for sub-category B-652.D . 19
23 A.6 Environmental requirements . 19
24 Annex B (normative) Family specification for category B-653 Dispersion shifted
25 single-mode fibres . 20
26 B.1 General . 20
27 B.2 Dimensional requirements . 20
28 B.3 Transmission requirements . 21
29 B.3.1 General . 21
30 B.3.2 Chromatic dispersion coefficient requirement for sub-category B-653.A
31 fibres . 21
32 B.3.3 Chromatic dispersion coefficient requirement for sub-category B-653.B
33 fibres . 22
34 B.4 Environmental requirements . 22
35 Annex C (normative) Family specification for category B-654 cut-off shifted single-
36 mode fibres . 23
37 C.1 General . 23
38 C.2 Dimensional requirements . 23
39 C.3 Mechanical requirements . 24
40 C.4 Chromatic dispersion parameters for B-654.E fibres . 25
41 C.5 Environmental requirements . 26
42 Annex D (normative) Family specification for category B-655 non-zero dispersion
43 shifted single-mode fibres . 27
44 D.1 General . 27
45 D.2 Dimensional requirements . 27
46 D.3 Mechanical requirements . 27
47 D.4 Transmission requirements . 28
48 D.4.1 General . 28
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49 D.4.2 Chromatic dispersion coefficient limits for sub-category B-655.C fibres. 28
50 D.4.3 Chromatic dispersion coefficient limits for sub-category B-655.D fibres. 29
51 D.4.4 Chromatic dispersion coefficient limits for sub-category B-655.E fibres . 29
52 D.5 Environmental requirements . 29
53 Annex E (normative) Family specification for category B-656 Wideband non-zero
54 dispersion shifted single-mode fibres . 30
55 E.1 General . 30
56 E.2 Dimensional requirements . 30
57 E.3 Mechanical requirements . 30
58 E.4 Transmission requirements . 31
59 E.4.1 General . 31
60 E.4.2 Chromatic dispersion coefficient for category B-656 fibres . 31
61 E.5 Environmental requirements . 32
62 Annex F (normative) Family specification for category B-657 Bending loss insensitive
63 single-mode fibres . 33
64 F.1 General . 33
65 F.2 Dimensional requirements . 33
66 F.3 Mechanical requirements . 34
67 F.4 Transmission requirements . 34
68 F.5 Environmental requirements . 36
69 Annex G (informative) System design information for category B-655 non-zero
70 disperion shifted single-mode fibres . 37
71 G.1 General . 37
72 G.2 One standard deviation limits for sub-category B-655.D fibres . 37
73 G.3 One standard deviation limits for sub-category B-655.E fibres. 38
74 Bibliography . 40
75
76 Figure G.1 – Sub-category B-655.D chromatic dispersion coefficient limits . 38
77 Figure G.2 – Sub-category B-655.E chromatic dispersion coefficient limits . 39
78
79 Table 1 – Map of IEC designation to ITU-T Recommendations and IEC 60793-2-
80 50:2015 designation. 8
81 1. Table 2 – Dimensional attributes and measurement methods . 11
82 Table 3 – Dimensional requirements common to all category B fibres . 11
83 Table 4 – Mechanical attributes and test methods . 11
84 Table 5 – Mechanical requirements common to all class B fibres . 12
85 Table 6 – Transmission attributes and measurement methods . 13
86 Table 7 – Transmission, requirements common to all class B fibres . 13
87 Table 8 – Additional transmission attributes required in the family specifications . 13
88 Table 9 – Environmental exposure tests . 14
89 Table 10 – Attributes measured in environmental exposure tests . 14
90 Table 11 – Change in attenuation for environmental tests . 14
91 Table 12 – Coating strip force for environmental tests . 15
92 Table 13 – Tensile strength for environmental tests . 15
93 Table 14 – Stress corrosion susceptibility for environmental tests . 15
94 Table A.1 – Dimensional requirements specific to category B-652.B fibres. 16
95 Table A.2 – Dimensional requirements specific to category B-652.D fibres . 17
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96 Table A.3 – Mechanical requirements specific to category B-652 fibres . 17
97 Table A.4 – Transmission requirements specific to sub-category B-652.B fibres . 18
98 Table A.5 – Transmission requirements specific to sub-category B-652.D Fibres . 18
99 Table A.6 – Chromatic dispersion properties for sub-category B-652.D fibres . 19
100 Table B.1 – Dimensional requirements specific to category B-653 fibres . 20
101 Table B.2 – Mechanical requirements specific to category B-653 fibres . 21
102 Table B.3 – Transmission requirements specific to category B-653 fibres . 21
103 Table C.1 – Dimensional requirements specific to category B-654 fibres . 23
104 Table C.2 – Mechanical requirements specific to category B-654 fibres . 24
105 Table C.3 – Transmission requirements specific to category B-654 fibres . 25
106 Table D.1 – Dimensional requirements specific to category B-655 fibres . 27
107 Table D.2 – Mechanical requirements specific to category B-655 fibres . 28
108 Table D.3 – Transmission requirements specific to category B-655 fibres . 28
109 Table E.1 – Dimensional requirements specific to category B-656 fibres . 30
110 Table E.2 – Mechanical requirements specific to category B-656 fibres . 31
111 Table E.3 – Transmission requirements specific to category B-656 fibres . 31
112 Table F.1 – Dimensional requirements specific to category B-657 fibres . 34
113 Table F.2 – Mechanical requirements specific to category B-657 fibres . 34
114 Table F.3 – Transmission requirements specific to category B-657 fibres . 35
115 Table G.1 – Examples for λ = 1 530 nm and λ = 1 565 nm . 37
min max
116
117
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118 INTERNATIONAL ELECTROTECHNICAL COMMISSION
119 ____________
120
121 OPTICAL FIBRES –
122
123 Part 2-50: Product specifications –
124 Sectional specification for class B single-mode fibres
125
126 FOREWORD
127 1) The International Electrotechnical Commission (IEC) is a worldwide organization for standardization comprising
128 all national electrotechnical committees (IEC National Committees). The object of IEC is to promote international
129 co-operation on all questions concerning standardization in the electrical and electronic fields. To this end and
130 in addition to other activities, IEC publishes International Standards, Technical Specifications, Technical Reports,
131 Publicly Available Specifications (PAS) and Guides (hereafter referred to as “IEC Publication(s)”). Their
132 preparation is entrusted to technical committees; any IEC National Committee interested in the subject dealt with
133 may participate in this preparatory work. International, governmental and non-governmental organizations liaising
134 with the IEC also participate in this preparation. IEC collaborates closely with the International Organization for
135 Standardization (ISO) in accordance with conditions determined by agreement between the two organizations.
136 2) The formal decisions or agreements of IEC on technical matters express, as nearly as possible, an international
137 consensus of opinion on the relevant subjects since each technical committee has representation from all
138 interested IEC National Committees.
139 3) IEC Publications have the form of recommendations for international use and are accepted by IEC National
140 Committees in that sense. While all reasonable efforts are made to ensure that the technical content of IEC
141 Publications is accurate, IEC cannot be held responsible for the way in which they are used or for any
142 misinterpretation by any end user.
143 4) In order to promote international uniformity, IEC National Committees undertake to apply IEC Publications
144 transparently to the maximum extent possible in their national and regional publications. Any divergence between
145 any IEC Publication and the corresponding national or regional publication shall be clearly indicated in the latter.
146 5) IEC itself does not provide any attestation of conformity. Independent certification bodies provide conformity
147 assessment services and, in some areas, access to IEC marks of conformity. IEC is not responsible for any
148 services carried out by independent certification bodies.
149 6) All users should ensure that they have the latest edition of this publication.
150 7) No liability shall attach to IEC or its directors, employees, servants or agents including individual experts and
151 members of its technical committees and IEC National Committees for any personal injury, property damage or
152 other damage of any nature whatsoever, whether direct or indirect, or for costs (including legal fees) and
153 expenses arising out of the publication, use of, or reliance upon, this IEC Publication or any other IEC
154 Publications.
155 8) Attention is drawn to the Normative references cited in this publication. Use of the referenced publications is
156 indispensable for the correct application of this publication.
157 9) Attention is drawn to the possibility that some of the elements of this IEC Publication may be the subject of patent
158 rights. IEC shall not be held responsible for identifying any or all such patent rights.
159 International Standard IEC 60793-2-50 has been prepared by subcommittee 86A: Fibres and
160 cables, of IEC technical committee 86: Fibre optics.
161 The seventh edition cancels and replaces the sixth edition published in 2018. This edition
162 constitutes a technical revision. This edition includes the following significant technical changes
163 with respect to the previous edition:
164 a) Adding a 200 µm coating nominal outer diameter option for B-654A, B, C fibres in Annex
165 C
166 The text of this International Standard is based on the following documents:
FDIS Report on voting
86A/1884/FDIS 86A/1898/RVD
167
168 Full information on the voting for the approval of this International Standard can be found in the
169 report on voting indicated in the above table.
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170 This document has been drafted in accordance with the ISO/IEC Directives, Part 2.
171 A list of all parts in the IEC 60793 series, published under the general title Optical fibres, can
172 be found on the IEC website.
173 The committee has decided that the contents of this document will remain unchanged until the
174 stability date indicated on the IEC website under "http://webstore.iec.ch" in the data related to
175 the specific document. At this date, the document will be
176 • reconfirmed,
177 • withdrawn,
178 • replaced by a revised edition, or
179 • amended.
180
IMPORTANT – The 'colour inside' logo on the cover page of this publication indicates
that it contains colours which are considered to be useful for the correct understanding
of its contents. Users should therefore print this document using a colour printer.
181
182
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183 OPTICAL FIBRES –
184
185 Part 2-50: Product specifications –
186 Sectional specification for class B single-mode fibres
187
188
189
190 1. Scope
191 This part of IEC 60793 is applicable to optical fibre categories B-652, B-653, B-654, B-655,
192 B-656 and B-657. A map illustrating the connection of IEC designations to ITU-T designations
193 is shown in Table 1. These fibres are used or can be incorporated in information transmission
194 equipment and optical fibre cables.
195 Three types of requirements apply to these fibres:
196 • general requirements, as defined in IEC 60793-2;
197 • specific requirements common to the class B single-mode fibres covered in this document
198 and which are given in Clause 5;
199 • particular requirements applicable to individual fibre categories or specific applications,
200 which are defined in Annexes A to F.
201 For some fibre categories (shown in the relevant family specifications), there are sub-categories
202 that are distinguished on the basis of difference in transmission attribute specifications. The
203 designations for these sub-categories are documented in the individual family specifications.
204 Table 1 shows a map from the IEC designations to the ITU-T recommendations. The table also
205 provides the normative annex in this document that contains the detailed specification as well
206 as the name used to describe this fibre type in IEC 60793-2-50:2015. The ITU-T
207 recommendations as well as the IEC categories/sub-categories within each recommendation
208 are given. In some cases, as for Recommendation G.652, a given IEC designation maps to
209 multiple categories in the ITU-T because the ITU-T categories are distinguished by cabled fibre
210 attribute (PMD ) performance which are not distinguished in the IEC fibre specifications.
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211 Table 1 – Map of IEC designation to ITU-T Recommendations and
212 IEC 60793-2-50:2015 designation
Annex Category Sub Description IEC 60793-2-50:2015 ITU-T Rec
Category
B-652 Dispersion unshifted fibre G.652
A B-652.B B1.1 G.652.B
A B-652.D B1.3 G.652.D
B-653 Dispersion shifted fibre G.653
B B-653.A B2_a G.653.A
B B-653.B B2_b G.653.B
B-654 Cut-off shifted fibre G.654
C B-654.A B1.2_a G.654.A
C B-654.B B1.2_b G.654.B
C B-654.C B1.2_c G.654.C
C B-654.D N/A G.654.D
C B-654.E N/A G.654.E
C B-655 Non-zero dispersion shifted fibre B4 G.655
D B-655.C B4_c G.655.C
D B-655.D B4_d G.655.D
D B-655.E B4_e G.655.E
E B-656 Wideband non-zero dispersion shifted B5 G.656
fibre
F B-657 Bending loss insensitive fibre B6 G.657
F B-657.A1 B6_a1 G.657.A1
F B-657.A2 B6_a2 G.657.A2
F B-657.B2 B6_b2 G.657.B2
F B-657.B3 B6_b3 G.657.B3
213
214 2. Normative references
215 The following documents are referred to in the text in such a way that some or all of their content
216 constitutes requirements of this document. For dated references, only the edition cited applies.
217 For undated references, the latest edition of the referenced document (including any
218 amendments) applies.
219 IEC 60793-1 (all parts), Optical fibres
220 IEC 60793-1-20, Optical fibres – Part 1-20: Measurement methods and test procedures – Fibre
221 geometry
222 IEC 60793-1-21, Optical fibres – Part 1-21: Measurement methods and test procedures –
223 Coating geometry
224 IEC 60793-1-22, Optical fibres – Part 1-22: Measurement methods and test procedures –
225 Length measurement
226 IEC 60793-1-30, Optical fibres – Part 1-30: Measurement methods and test procedures – Fibre
227 proof test
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228 IEC 60793-1-31, Optical fibres – Part 1-31: Measurement methods and test procedures –
229 Tensile strength
230 IEC 60793-1-32, Optical fibres – Part 1-32: Measurement methods and test procedures –
231 Coating strippability
232 IEC 60793-1-33, Optical fibres – Part 1-33: Measurement methods and test procedures – Stress
233 corrosion susceptibility
234 IEC 60793-1-34, Optical fibres – Part 1-34: Measurement methods and test procedures – Fibre
235 curl
236 IEC 60793-1-40, Optical fibres – Part 1-40: Measurement methods and test procedures –
237 Attenuation
238 IEC 60793-1-42, Optical fibres – Part 1-42: Measurement methods and test procedures –
239 Chromatic dispersion
240 IEC 60793-1-44, Optical fibres – Part 1-44: Measurement methods and test procedures – Cut-
241 off wavelength
242 IEC 60793-1-45, Optical fibres – Part 1-45: Measurement methods and test procedures – Mode
243 field diameter
IEC 60793-1-46,
244 Optical fibres – Part 1-46: Measurement methods and test procedures –
245 Monitoring of changes in optical transmittance
246 IEC 60793-1-47, Optical fibres – Part 1-47: Measurement methods and test procedures –
247 Macrobending loss
248 IEC 60793-1-48, Optical fibres – Part 1-48: Measurement methods and test procedures –
249 Polarization mode dispersion
250 IEC 60793-1-50, Optical fibres – Part 1-50: Measurement methods and test procedures – Damp
251 heat (steady state) tests
252 IEC 60793-1-51, Optical fibres – Part 1-51: Measurement methods and test procedures – Dry
253 heat (steady state) tests
254 IEC 60793-1-52, Optical fibres – Part 1-52: Measurement methods and test procedures –
255 Change of temperature tests
256 IEC 60793-1-53, Optical fibres – Part 1-53: Measurement methods and test procedures – Water
257 immersion tests
258 IEC 60793-2, Optical fibres – Part 2: Product specifications – General
259 IEC 60794-2, Optical fibre cables – Part 2: Indoor cables – Sectional specification
260 3. Terms and definitions
261 For the purposes of this document, the terms and definitions given in IEC 60793-2 and the
262 IEC 60793-1 series apply.
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263 ISO and IEC maintain terminological databases for use in standardization at the following
264 addresses:
265 • IEC Electropedia: available at http://www.electropedia.org/
266 • ISO Online browsing platform: available at http://www.iso.org/obp
267 NOTE General definitions for fibres are provided in IEC 60793-2. The definitions of the specified attributes are
268 contained in the relevant test methods standard of the IEC 60793-1 series, while general definitions for testing are
269 provided in IEC 60793-1-1.
270 4. Abbreviated terms and symbols
271 For the purposes of this document, the following abbreviated terms and symbols apply:
272 F Average strip force
avg
273 F Peak strip force
peak
274 λ Zero dispersion wavelength
0
275 λ Fibre cut-off wavelength
c
276 λ Cable cut-off wavelength
cc
277 MFD Mode field diameter
278 n Stress corrosion parameter – dynamic
d
279 PMD Polarization mode dispersion
280 PMD PMD link design value
Q
281 5. Specifications
282 5.1 General
283 The fibre shall consist of a glass core and glass cladding in accordance with the construction
284 of optical fibre class B – single-mode fibre – as given in IEC 60793-2.
285 The term “glass” usually refers to material consisting of non-metallic oxides. The composition
286 of some fibres may be all glass, or glass and glass/hard polymeric composites.
287 5.2 Dimensional requirements
288 Relevant dimensional attributes and measurement methods are given in Table 2.
289 Requirements common to all categories of class B single-mode fibres are given in Table 3.
290 Cladding diameter, cladding non-circularity, and core – cladding concentricity error shall be
291 specified in the family specifications
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