oSIST prEN IEC 61755-3-8:2025
(Main)Fibre optic interconnecting devices and passive components - Connector optical interfaces - Part 3-8: Connector parameters of non-dispersion shifted single mode physically contacting fibres - Angled 2,5 mm and 1,25 mm diameter cylindrical composite ferrules using titanium as fibre surrounding material
Fibre optic interconnecting devices and passive components - Connector optical interfaces - Part 3-8: Connector parameters of non-dispersion shifted single mode physically contacting fibres - Angled 2,5 mm and 1,25 mm diameter cylindrical composite ferrules using titanium as fibre surrounding material
Dispositifs d'interconnexion et composants passifs à fibres optiques- Interfaces optiques de connecteurs - Partie 3-8: Paramètres de connecteurs de fibres unimodales à dispersion non décalée en contact physique - Férules composites cylindriques de diamètre 2,5 mm et 1,25 mm utilisant le titane comme matériau entourant les fibres
Optični spojni elementi in pasivne komponente - Vmesniki optičnih konektorjev - 3-8. del: Kotne cilindrične kompozitne tulke s premerom 2,5 mm in 1,25 mm, pri katerih je titan uporabljen kot material za obod vlaken
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Standards Content (Sample)
SLOVENSKI STANDARD
01-september-2025
Optični spojni elementi in pasivne komponente - Vmesniki optičnih konektorjev - 3
-8. del: Kotne cilindrične kompozitne tulke s premerom 2,5 mm in 1,25 mm, pri
katerih je titan uporabljen kot material za obod vlaken
Fibre optic interconnecting devices and passive components - Connector optical
interfaces - Part 3-8: Connector parameters of non-dispersion shifted single mode
physically contacting fibres - Angled 2,5 mm and 1,25 mm diameter cylindrical composite
ferrules using titanium as fibre surrounding material
Dispositifs d'interconnexion et composants passifs à fibres optiques- Interfaces optiques
de connecteurs - Partie 3-8: Paramètres de connecteurs de fibres unimodales à
dispersion non décalée en contact physique - Férules composites cylindriques de
diamètre 2,5 mm et 1,25 mm utilisant le titane comme matériau entourant les fibres
Ta slovenski standard je istoveten z: prEN IEC 61755-3-8:2025
ICS:
33.180.20 Povezovalne naprave za Fibre optic interconnecting
optična vlakna devices
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.
86B/5070/CDV
COMMITTEE DRAFT FOR VOTE (CDV)
PROJECT NUMBER:
IEC 61755-3-8 ED2
DATE OF CIRCULATION: CLOSING DATE FOR VOTING:
2025-06-27 2025-09-19
SUPERSEDES DOCUMENTS:
86B/4976/CD, 86B/5019A/CC
IEC SC 86B : FIBRE OPTIC INTERCONNECTING DEVICES AND PASSIVE COMPONENTS
SECRETARIAT: SECRETARY:
Japan Mr Ryo Koyama
OF INTEREST TO THE FOLLOWING COMMITTEES: HORIZONTAL FUNCTION(S):
ASPECTS CONCERNED:
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
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Recipients of this document are invited to submit, with their comments, notification of any relevant “In Some
Countries” clauses to be included should this proposal proceed. Recipients are reminded that the CDV stage is
the final stage for submitting ISC clauses. (SEE AC/22/2007 OR NEW GUIDANCE DOC).
TITLE:
Fibre optic interconnecting devices and passive components - Connector optical interfaces -
Part 3-8: Connector parameters of non-dispersion shifted single mode physically contacting
fibres – angled 2,5 mm and 1,25 mm diameter cylindrical composite ferrules using titanium as
fibre surrounding material
PROPOSED STABILITY DATE: 2033
NOTE FROM TC/SC OFFICERS:
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
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IEC CDV 61755-3-8 © IEC 2025
CONTENTS
FOREWORD . 3
1 Scope . 5
2 Normative references . 5
3 Terms and definitions . 5
4 Description . 5
5 Interface parameters . 6
Annex A (informative) Maximum allowed spherical fibre undercut . 11
Annex B (informative) Expected attenuation when mated to reference connector
plugs . 13
Annex C (informative) Guidance related to simulation of optical interface attenuation . 14
Bibliography . 19
Figure 1 –Connector end-face dimensions of the contact zone . 7
Figure 2 – Fibre core location after termination . 8
Figure 3 – Interface dimensions for APC ferrule . 10
Table 3 – Optical interface parameter values for APC ferrules . 10
Figure A.1 – Allowable undercut as a function of endface radius and apex offset – 4,9
N minimum contact force . 12
Figure A.2 – Allowable undercut as a function of endface radius and apex offset – 2,9
N minimum contact force . 12
Figure C.1 – MFD distribution used in the design curve calculation . 15
Figure C.2 – Resultant fibre core to ferrule eccentricity distribution for Grade B
attenuation (over 20000 randomly mated connectors) . 16
Figure C.3 – Resultant fibre angle distribution for Grade B attenuation (over 20000
randomly mated connectors) . 16
Figure C.4 – Scatterplot of fibre core eccentricities for Grade B attenuation (over
20000 randomly mated connectors) . 17
Figure C.5 – Histogram indicating attenuation distribution of a Grade B optical
Interface (over 20000 randomly mated connectors) . 18
Table 1 – Optical interface parameter values for 2,5 mm diameter APC ferrules . 8
Table 2 – Optical interface parameter values for 1,25 mm diameter APC ferrules . 9
Table B.1 - Descriptive statistics when performance grades are mated against a
reference interface . 13
Table C.1 – MFD and fibre core nominal index of refraction . 15
IEC CDV 61755-3-8 © IEC 2025
INTERNATIONAL ELECTROTECHNICAL COMMISSION
____________
FIBRE OPTIC INTERCONNECTING DEVICES AND PASSIVE COMPONENTS
– CONNECTOR OPTICAL INTERFACES –
Part 3-8: Connector parameters of non-dispersion shifted single mode
physically contacting fibres – angled 2,5 mm and 1,25 mm diameter
cylindrical composite ferrules using titanium as fibre surrounding
material
FOREWORD
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1 International Standard IEC 61755-3-8 has been prepared by subcommittee SC86B: Fibre optic
2 interconnecting devices and passive components, of IEC technical committee 86: Fibre optics.
3 This second edition cancels and replaces the first edition published in 2009. It constitutes a technical
4 revision. The changes with respect to the previous edition are:
6 a) harmonization with the other level 3 optical interface documents (IEC 61755-3-2);
7 b) addition of the reference grades in Table 1 and Table 2;
8 c) addition of the Annex B and C.
9 The text of this standard is based on the following documents:
IEC CDV 61755-3-8 © IEC 2025
FDIS Report on voting
XX/XX/FDIS XX/XX/RVD
11 Full information on the voting for the approval of this standard can be found in the report on
12 voting indicated in the above table.
13 This publication has been drafted in accordance with the ISO/IEC Directives, Part 2.
14 The committee has decided that the contents of this publication will remain unchanged until the
15 stability date indicated on the IEC web site under "http://webstore.iec.ch" in the data related to
16 the specific publication. At this date, the publication will be
17 • reconfirmed,
18 • withdrawn,
19 • replaced by a revised edition, or
20 • amended.
22 The National Committees are requested to note that for this publication the stability date is .
23 THIS TEXT IS INCLUDED FOR THE INFORMATION OF THE NATIONAL COMMITTEES AND WILL BE DELETED
24 AT THE PUBLICATION STAGE.
IEC CDV 61755-3-8 © IEC 2025
28 FIBRE OPTIC INTERCONNECTING
29 DEVICES AND PASSIVE COMPONENTS –
30 CONNECTOR OPTICAL INTERFACES –
32 Part 3-8: Connector parameters of non-dispersion shifted single mode
33 physically contacting fibres – angled 2,5 mm and 1,25 mm diameter
34 cylindrical composite ferrules using titanium as fibre surrounding
35 material
37 1 Scope
38 This part of IEC 61755 defines dimensional limits of an optical connector with a 2,5 mm and a
39 1,25 mm diameter cylindrical composite ferrule using titanium as fibre surrounding material for
40 optical interface to meet specific requirements for angle polished fibre-to-fibre interconnection
41 as defined in IEC 61755-2-2. The composite ferrule uses different materials in the end-face
42 contact zone and in ferrule to sleeve contact zone. The specified materials for each zone are
43 zirconia (ZrO ) for the ferrule to sleeve contact zone and titanium for the end-face contact zone.
44 Ferrules made from the material specified in this document are suitable for use in all operating
45 service environments categories defined in IEC 61753-1.
46 NOTE If mated within the same family (cylindrical APC ferrule), the ferrules specified in this standard are intended
47 to have the same optical attenuation performance grade for connections with all ferrules described in different parts
48 of IEC 61755-3 series documents.
50 2 Normative references
51 The following documents, in whole or in part, are normatively referenced in this document and
52 are indispensable for its application. For dated references, only the edition cited applies. For
53 undated references, the latest edition of the referenced document (including any amendments)
54 applies.
55 IEC 61753-1, Fibre optic interconnecting devices and passive components - Performance
56 standard - Part 1: General and guidance
57 IEC 61755-2-2, Fibre optic interconnecting devices and passive components - Connector optical
58 interfaces for single-mode fibres - Part 2-2: Connection parameters of unshifted physically
59 contacting fibres - angled
60 3
...
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