Fibre optic interconnecting devices and passive components - Basic test and measurement procedures - Part 3-7: Examinations and measurements - Wavelength dependence of attenuation and return loss of single mode components (IEC 61300-3-7:2021/AMD1:2025)

Lichtwellenleiter - Verbindungselemente und passive Bauteile - Grundlegende Prüf- und Messverfahren - Teil 3-7: Untersuchungen und Messungen - Wellenlängenabhängigkeit von Dämpfung und Rückflussdämpfung von Einmodenbauteilen (IEC 61300-3-7:2021/AMD1:2025)

Dispositifs d’interconnexion et composants passifs fibroniques - Procédures fondamentales d'essais et de mesures - Partie 3-7: Examens et mesures - Affaiblissement et affaiblissement de réflexion des composants unimodaux en fonction de la longueur d’onde (IEC 61300-3-7:2021/AMD1:2025)

Naprave za spajanje optičnih vlaken in pasivne komponente - Osnovni preskusni in merilni postopki - 3-7. del: Preiskave in meritve - Valovna dolžinska odvisnost slabljenja in povratnih izgub enorodovnih komponent - Dopolnilo A1 (IEC 61300-3-7:2021/AMD1:2025)

General Information

Status
Published
Public Enquiry End Date
31-Oct-2024
Publication Date
22-Feb-2026
Technical Committee
MOC - Mobile Communications
Current Stage
6060 - National Implementation/Publication (Adopted Project)
Start Date
10-Feb-2026
Due Date
17-Apr-2026
Completion Date
23-Feb-2026

Relations

Effective Date
10-Feb-2026
Effective Date
01-Apr-2026

Overview

EN IEC 61300-3-7:2021/prA1:2024 is Amendment 1 to Part 3-7 of the IEC 61300 series covering the wavelength dependence of attenuation and return loss of single‑mode fibre optic components. Published as a Committee Draft for Vote (CDV) and submitted for IEC–CENELEC parallel voting, this amendment refines test and measurement procedures used by manufacturers, test laboratories and standards committees. The CDV notes the document is under study and subject to change; recipients are invited to comment and to notify any relevant patent rights.

Key Topics

  • Scope: Focuses on examinations and measurements related to how attenuation and return loss vary with wavelength for single‑mode interconnecting devices and passive components.
  • Method C (multiple fixed narrowband light sources - NLS): The amendment clarifies that the set of NLS shall cover the specified wavelength range. When a N×1 fibre optic branching device or fibre optic switch is used, N shall be equal to or more than the number of wavelengths to be measured and the set of NLS used. Other ports to be measured shall be terminated.
  • Document status and administration:
    • Issued as IEC 61300-3-7 Amendment 1 (project IEC 61300-3-7/AMD1 ED3).
    • CDV circulation dated 2024-08-23 with voting close 2024-11-15.
    • Proposed stability date: 2031.
    • Secretariat: IEC SC 86B (Fibre optic interconnecting devices and passive components); secretary listed as Mr Shigeru Tomita.
  • Languages and national adoption: The amendment is adopted in parallel by national bodies (example shown: Slovenian SIST adoption of EN IEC text).

Applications

This amendment and the associated test procedures are directly applicable to:

  • Manufacturers of single‑mode fibre optic connectors, adapters and passive components who need consistent, repeatable measurement methods for attenuation and return loss versus wavelength.
  • Test laboratories performing component characterization, acceptance testing and conformance verification to industry standards.
  • System designers and integrators requiring validated component performance data across specified wavelength ranges for link budgeting and optical system design.

Practical benefits include clearer requirements when using multiple narrowband sources and guidance to ensure ports not under test are properly terminated to avoid measurement artefacts.

Related Standards

  • IEC 61300 series (Basic test and measurement procedures for fibre optic interconnecting devices and passive components).
  • National adoptions and EN versions (e.g., SIST EN IEC 61300-3-7:2021/oprA1:2024).

For implementers and stakeholders, review the CDV text and submit comments during the parallel voting window. The amendment refines test practice and helps harmonize measurement procedures for wavelength‑dependent performance of single‑mode fibre components.

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SIST EN IEC 61300-3-7:2021/A1:2026

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Frequently Asked Questions

SIST EN IEC 61300-3-7:2021/A1:2026 is a amendment published by the Slovenian Institute for Standardization (SIST). Its full title is "Fibre optic interconnecting devices and passive components - Basic test and measurement procedures - Part 3-7: Examinations and measurements - Wavelength dependence of attenuation and return loss of single mode components (IEC 61300-3-7:2021/AMD1:2025)". This standard covers: Fibre optic interconnecting devices and passive components - Basic test and measurement procedures - Part 3-7: Examinations and measurements - Wavelength dependence of attenuation and return loss of single mode components (IEC 61300-3-7:2021/AMD1:2025)

Fibre optic interconnecting devices and passive components - Basic test and measurement procedures - Part 3-7: Examinations and measurements - Wavelength dependence of attenuation and return loss of single mode components (IEC 61300-3-7:2021/AMD1:2025)

SIST EN IEC 61300-3-7:2021/A1:2026 is classified under the following ICS (International Classification for Standards) categories: 33.180.20 - Fibre optic interconnecting devices. The ICS classification helps identify the subject area and facilitates finding related standards.

SIST EN IEC 61300-3-7:2021/A1:2026 has the following relationships with other standards: It is inter standard links to SIST EN 61300-1:2017, SIST EN IEC 61300-3-7:2021. Understanding these relationships helps ensure you are using the most current and applicable version of the standard.

SIST EN IEC 61300-3-7:2021/A1:2026 is available in PDF format for immediate download after purchase. The document can be added to your cart and obtained through the secure checkout process. Digital delivery ensures instant access to the complete standard document.

Standards Content (Sample)


SLOVENSKI STANDARD
01-april-2026
Naprave za spajanje optičnih vlaken in pasivne komponente - Osnovni preskusni
in merilni postopki - 3-7. del: Preiskave in meritve - Valovna dolžinska odvisnost
slabljenja in povratnih izgub enorodovnih komponent - Dopolnilo A1 (IEC 61300-3-
7:2021/AMD1:2025)
Fibre optic interconnecting devices and passive components - Basic test and
measurement procedures - Part 3-7: Examinations and measurements - Wavelength
dependence of attenuation and return loss of single mode components (IEC 61300-3-
7:2021/AMD1:2025)
Lichtwellenleiter - Verbindungselemente und passive Bauteile - Grundlegende Prüf- und
Messverfahren - Teil 3-7: Untersuchungen und Messungen - Wellenlängenabhängigkeit
von Dämpfung und Rückflussdämpfung von Einmodenbauteilen (IEC 61300-3-
7:2021/AMD1:2025)
Dispositifs d’interconnexion et composants passifs fibroniques - Procédures
fondamentales d'essais et de mesures - Partie 3-7: Examens et mesures -
Affaiblissement et affaiblissement de réflexion des composants unimodaux en fonction
de la longueur d’onde (IEC 61300-3-7:2021/AMD1:2025)
Ta slovenski standard je istoveten z: EN IEC 61300-3-7:2021/A1:2026
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.

EUROPEAN STANDARD EN IEC 61300-3-7:2021/A1

NORME EUROPÉENNE
EUROPÄISCHE NORM February 2026
ICS 33.180.20
English Version
Fibre optic interconnecting devices and passive components -
Basic test and measurement procedures - Part 3-7:
Examinations and measurements - Wavelength dependence of
attenuation and return loss of single mode components
(IEC 61300-3-7:2021/AMD1:2025)
Dispositifs d'interconnexion et composants passifs Lichtwellenleiter - Verbindungselemente und passive
fibroniques - Procédures fondamentales d'essais et de Bauteile - Grundlegende Prüf- und Messverfahren - Teil 3-
mesures - Partie 3-7: Examens et mesures - 7: Untersuchungen und Messungen -
Affaiblissement et affaiblissement de réflexion des Wellenlängenabhängigkeit von Dämpfung und
composants unimodaux en fonction de la longueur d'onde Rückflussdämpfung von Einmodenbauteilen
(IEC 61300-3-7:2021/AMD1:2025) (IEC 61300-3-7:2021/AMD1:2025)
This amendment A1 modifies the European Standard EN IEC 61300-3-7:2021; it was approved by CENELEC on 2026-01-16. CENELEC
members are bound to comply with the CEN/CENELEC Internal Regulations which stipulate the conditions for giving this amendment the
status of a national standard without any alteration.
Up-to-date lists and bibliographical references concerning such national standards may be obtained on application to the CEN-CENELEC
Management Centre or to any CENELEC member.
This amendment exists in three official versions (English, French, German). A version in any other language made by translation under the
responsibility of a CENELEC member into its own language and notified to the CEN-CENELEC Management Centre has the same status as
the official versions.
CENELEC members are the national electrotechnical committees of Austria, Belgium, Bulgaria, Croatia, Cyprus, the Czech Republic,
Denmark, Estonia, Finland, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, the
Netherlands, Norway, Poland, Portugal, Republic of North Macedonia, Romania, Serbia, Slovakia, Slovenia, Spain, Sweden, Switzerland,
Türkiye and the United Kingdom.

European Committee for Electrotechnical Standardization
Comité Européen de Normalisation Electrotechnique
Europäisches Komitee für Elektrotechnische Normung
CEN-CENELEC Management Centre: Rue de la Science 23, B-1040 Brussels
© 2026 CENELEC All rights of exploitation in any form and by any means reserved worldwide for CENELEC Members.
Ref. No. EN IEC 61300-3-7:2021/A1:2026 E

European foreword
The text of document 86B/4939/CDV, future edition 3 of IEC 61300-3-7/AMD1, prepared by SC 86B
"Fibre optic interconnecting devices and passive components" of IEC/TC 86 "Fibre optics" was
submitted to the IEC-CENELEC parallel vote and approved by CENELEC as
The following dates are fixed:
• latest date by which the document has to be implemented at national (dop) 2027-02-28
level by publication of an identical national standard or by endorsement
• latest date by which the national standards conflicting with the (dow) 2029-02-28
document have to be withdrawn
Attention is drawn to the possibility that some of the elements of this document may be the subject of
patent rights. CENELEC shall not be held responsible for identifying any or all such patent rights.
Any feedback and questions on this document should be directed to the users’ national committee. A
complete listing of these bodies can be found on the CENELEC website.
Endorsement notice
The text of the International Standard IEC 61300-3-7:2021/AMD1:2025 was approved by CENELEC
as a European Standard without any modification.

IEC 61300-3-7 ®
Edition 3.0 2025-12
INTERNATIONAL
STANDARD
AMENDMENT 1
Fibre optic interconnecting devices and passive components - Basic test and
measurement procedures -
Part 3-7: Examinations and measurements - Wavelength dependence of
attenuation and return loss of single mode components
ICS 33.180.20  ISBN 97
...

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