EN 50377-17-1:2013

Connector sets and interconnect components to be used in optical fibre communication systems - Product specifications - Part 17-1: Type FPFT (factory polished field terminated) simplex connector factory terminated with EN 60793-2-50 category B1.3 fibre and field mounted onto IEC 60793-2-50 category B1.3 or B6a_1 or B6a_2 singlemode fibre, category C

1.1 Product definition This European Standard contains the initial, start of life dimensional, optical, mechanical and environmental performance requirements that a Factory Polished Field Terminated (FPFT) single mode simplex connector set (plug adaptor plug), adaptor will meet in order for it to be categorised as an EN standard product. The FPFT is designed for either fusion or mechanical splice methods. The performance is specified for the mated combination between a FPFT plug and an EN standardised plug from the EN 50377 series (configuration 1) or between two FTFP plugs (configuration 2). The fibre specified inside the FPFT plug in this European Standard is standard single mode fibre with low water peak as specified as B1.3, which is field, mated to B1.3 fibre or bend insensitive single mode fibre specified as B6_a1 or B6_a2 in EN 60793-2-50. Mixing standard and bend insensitive fibres in a connection causes a considerable intrinsic attenuation due to mode field diameter mismatch. These connectors are intended to be installed inside wall outlets or other fibre organisers, and are therefore considered as being in a “protected environment” and are terminated onto either 250 μm primary coated or up to 900 μm buffered fibres. Since different variants and grades of performance are permitted, product marking details are given in 3.5. 1.2 Intermateability 1.2.1 Mechanical intermateability In order to meet mechanical performance requirements, the FPFT plug will meet the optical, environmental and mechanical requirements as stated in this European Standard and the mated plug will meet the all requirements of the relevant EN 50377 series for category C. Intermateability between the FPFT plug and its standard EN 50377 counterpart can only be guaranteed when both plugs meet the same EN 50377 product specification mechanical connector interface dimensions and endface geometry requirements. 1.2.2 Optical intermateability In EN 50377 product specifications, the random mated performance is calculated when the two connector plugs have been terminated with single-mode fibres using a worst case MFD. The specified MFD range in fibre standards (e.g. B1.3 fibres) is 8,0 μm to 10,1 μm at 1 310 nm, which causes 0,22 dB worst case intrinsic attenuation. However, in EN 50377 product specification series, the MFD is limited to 8,9 μm to 9,5 μm at 1 310 nm. In this European Standard, in order to achieve the random mate performance values, the total MFD range of bend insensitive fibres, e.g. B6a fibres, is limited to 8,5 μm to 9,5 μm at 1 310 nm. This causes a worst case intrinsic attenuation of 0,05 dB. 1.3 Operating environment The tests selected, combined with the severities and durations, are representative of a category C environment as defined in EN 61753-1. The FPFT plugs are terminated on to 250 µm primary coated or up to 900 µm buffered fibres and are specified to be located in a protected environment. 1.4 Reliability Whilst the anticipated service life expectancy of the product in this environment is 20 years, compliance with this European Standard does not guarantee the reliability of the product. This should be predicted using a recognised reliability assessment programme. 1.5 Quality assurance Compliance with this European Standard does not guarantee the manufacturing consistency of the product. This should be maintained using a recognised quality assurance programme.

Steckverbindersätze und Verbindungselemente für Lichtwellenleiter-Datenübertragungssysteme - Produktnormen - Teil 17-1: Bauart FPFT- (vorpolierter und feldkonfigurierbarer) Simplex-Steckverbinder mit einer Faser der Kategorie B1.3 nach IEC 60793-2-50 vorkonfektioniert und feldmontierbar an Einmodenfasern der Kategorien B1.3 oder B6a_1 oder B6a_2 nach IEC 60793-2-50 für Kategorie C

1.1 Produktdefinition Die vorliegende Europäische Norm enthält die Anfangsanforderungen, die Maßanforderungen am Anfang der Lebensdauer, die optischen und mechanischen Anforderungen sowie die umweltbezogenen Anforderungen an das Betriebsverhalten, die ein vorpolierter und feldkonfigurierbarer (en: Factory Polished Field Termina¬ted) FPFT-Simplex-Steckverbindersatz für Einmodenfasern mit einem Adapter (Steckverbinder/Adapter/ Steckverbinder) erfüllen muss, um als EN-Normprodukt eingestuft zu werden. Die Bauart FPFT ist sowohl für mechanische als auch für Schmelzspleiße ausgelegt. Das Betriebsverhalten ist festgelegt für die gepaarte Kombination aus einem FPFT-Steckverbinder und einem EN-Normsteck-verbinder nach der Normenreihe EN 50377 (Aufbau 1) oder aus zwei FTFP-Steckverbindern (Aufbau 2). Die in dieser Europäischen Norm für den FPFT-Steckverbinder festgelegte Faser ist eine Standard-Einmoden-faser B1.3, die als Low-Water-Peak-Faser ausgeführt ist und mit einer Faser der Kategorie B1.3 oder einer biegeunempfindlichen Einmodenfaser wie B6_a1 oder B6_a2 nach EN 60793 2 50 verbunden ist. Das Vermischen der Standards und biegeunempfindlichen Fasern in einer Verbindung bewirkt eine erhebliche intrinsische Dämpfung durch Fehlanpassung des Modenfelddurchmessers. Diese Steckverbinder sollen in Wandsteckdosen oder anderen LWL-Verteilern eingesetzt werden und sind daher für ein „geschütztes Umfeld“ vorzusehen und sind entweder an primär beschichteten Fasern mit 250 µm oder an Adern bis 900 µm angeschlossen. Da unterschiedliche Varianten und verschiedene Betriebsverhaltensklassen zulässig sind, werden in 3.5 genaue Produktkennzeichnungen festgelegt. 1.2 Steckbarkeit 1.2.1 Mechanische Steckbarkeit Um den Anforderungen an die mechanische Leistungsfähigkeit gerecht zu werden, muss der FPFT-Steck-verbinder die in dieser Europäischen Norm angegebenen Anforderungen an das optische und mechanische Betriebsverhalten sowie an das Umweltverhalten erfüllen, wobei der gesteckte Steckverbinder alle entspre-chenden Anforderungen der Normenreihe EN 50377 für die Kategorie C erfüllen muss. Die Steckbarkeit zwischen dem FPFT-Steckverbinder und seinem Gegenstück nach der Normenreihe EN 50377 kann nur gewährleistet werden, wenn beide Steckverbinder die gleichen Anforderungen an die mechanischen Abmes-sungen des Steckverbinder-Steckgesichts und die Endflächengeometrie nach der Produktnorm EN 50377 erfüllen. 1.2.2 Optische Steckbarkeit In den Produktnormen nach EN 50377 wird bei der Berechnung der Leistung zweier zufällig gepaarter Steck-verbinder von angeschlossenen Einmodenfasern mit ungünstigstem MFD ausgegangen. Der in den Faser-normen (z. B. Fasern der Kategorie B1.3) festgelegte MFD-Bereich bei 1 310 nm beträgt 8,0 µm bis 10,1 µm, was bei ungünstigsten Bedingungen eine intrinsische Dämpfung von 0,22 dB verursacht. In den Produkt¬normen nach EN 50377 ist der MFD bei 1 310 nm jedoch auf 8,9 µm bis 9,5 µm beschränkt. Um die Leistungswerte zufälliger Paarungen zu erhalten, ist in dieser Europäischen Norm der gesamte MFD-Bereich von biegeunempfindlichen Fasern wie z. B. Fasern der Kategorie B6a bei 1 310 nm auf 8,5 µm bis 9,5 µm beschränkt. Dies führt bei ungünstigsten Bedingungen zu einer intrinsischen Dämpfung von 0,05 dB. 1.3 Betriebsumgebung Die ausgewählten Prüfungen zusammen mit den Prüfschärfen und Prüfdauern gelten für Umgebungen der Kategorie C nach EN 61753 1. Die FPFT-Steckverbinder werden an primär beschichtete Fasern mit 250 µm oder an Adern bis 900 µm angeschlossen und sind für die Anwendung in geschützter Umgebung spezifiziert. 1.4 Zuverlässigkeit Obwohl die Lebensdauererwartung für das Produkt in dieser Umgebung 20 Jahre beträgt, garantiert die Einhaltung dieser Europäischen Norm nicht die Zuverlässigkeit des Produkts. Diese sollte mit einem aner-kannten Zuverlässigkeitsbewertungsprogramm beurteilt werden. 1.5 Qualitätssicherung ...

Jeux de connecteurs et composants d'interconnexion à utiliser dans les systèmes de communication par fibres optiques - Spécifications de produits - Partie 17-1: Connecteur simplex de type FPFT (poli en usine et monté sur le terrain) raccordé en usine à une fibre de la catégorie B1.3 selon l'EN 60793 2 50 et monté sur le terrain sur une fibre unimodale de catégorie B1.3 ou B6_a1 ou B6_a2 selon la CEI 60793 2 50, Catégorie C

1.1 Définition du produit La présente Norme Européenne contient les exigences de performances initiales, dimensionnelles en début de vie, optiques, mécaniques et environnementales auxquelles une connexion simplex unimodale « poli en usine et monté sur le terrain » (FPFT, Factory Polished Field Terminated) (fiche raccord fiche), satisfera afin d'être classée comme produit entrant dans une norme EN de produit. Le type FPFT est conçu pour les méthodes d'épissure par fusion ou mécaniques. Les performances sont spécifiées pour la combinaison accouplée d'une fiche FPFT et d'une fiche normalisée selon une EN de la série EN 50377 (configuration 1) ou de deux fiches FPFT (configuration 2). La fibre spécifiée à l'intérieur de la fiche FPFT dans la présente norme européenne est une fibre unimodale standard avec faible pic de l'eau, telle qu'elle est spécifiée pour la catégorie B1.3, qui est accouplée sur le terrain à une fibre B1.3 ou à une fibre unimodale insensible aux courbures spécifiée B6_a1 ou B6_a2 dans l'EN 60793-2-50. Le fait de mélanger des fibres standards et des fibres insensibles aux courbures dans une connexion produit un affaiblissement intrinsèque très important qui résulte du défaut d'adaptation du diamètre du champ de mode. Ces connecteurs sont destinés à être installés à l'intérieur des prises murales ou d'autres organiseurs de fibres, et sont donc considérés comme étant dans un "environnement protégé" et sont raccordés soit à des fibres sous revêtement primaire de 250 μm soit à des fibres sous revêtement protecteur jusqu'à 900 μm. Dans la mesure où différentes variantes et différentes classes de performances sont autorisées, les détails de marquage des produits sont donnés en 3.5. 1.2 Compatibilité d'accouplement 1.2.1 Compatibilité d'accouplement mécanique Pour satisfaire aux exigences de performances mécaniques, la fiche FPFT satisfera aux exigences mécaniques, environnementales et optiques stipulées dans la présente norme européenne, et la fiche accouplée satisfera à toutes les exigences de la série EN 50377 applicable pour la catégorie C. La compatibilité d’accouplement entre la fiche FPFT et sa partie standard correspondante selon l'EN 50377 ne peut être garantie que lorsque les deux fiches satisfont aux dimensions d’interface mécanique de la connexion, de la même spécification de produit EN 50377 et aux mêmes exigences de géométrie de l’extrémité. 1.2.2 Compatibilité d'accouplement optique Dans les spécifications de produit EN 50377, la performance accouplée sans choix préalable est calculée lorsque les deux fiches de la connexion ont été raccordées avec des fibres unimodales en utilisant le MFD le plus défavorable. La plage de MFD spécifiée dans les normes de fibres (par exemple fibres B1.3) va de 8,0 μm à 10,1 μm à 1 310 nm, ce qui provoque un affaiblissement intrinsèque le plus défavorable de 0,22 dB. Toutefois, dans la série de spécifications de produit EN 50377, le MFD est limité à une valeur comprise entre 8,9 μm et 9,5 μm à 1 310 nm. Dans la présente norme européenne, pour obtenir les valeurs de performance d'accouplement sans choix préalable, la plage de MFD totale des fibres, ex. les fibres B6_a insensible aux courbures est limitée à des valeurs comprises entre 8,5 μm et 9,5 μm à 1 310 nm. Ceci provoque l'affaiblissement intrinsèque le plus défavorable de 0,05 dB. 1.3 Environnement de fonctionnement Les essais choisis combinés avec les sévérités et les durées sont représentatifs de l’environnement de la classe C, tel qu'il est défini dans l'EN 61753-1. Les fibres FPFT sont raccordées sur des fibres sous revêtement primaire de 250 µm ou sur des fibres sous revêtement protecteur jusqu'à 900 µm et sont spécifiées pour être situées dans un environnement protégé. 1.4 Fiabilité ...

Konektorski sestavi in povezovalne komponente za optične komunikacijske sisteme - Specifikacije izdelka - 17-1. del: Simpleksni konektor tipa FPFT (tovarniško poliran, terensko spajanje) s tovarniško priključenim optičnim vlaknom vrste EN 60793-2-50 kategorije B1.3 in terensko spojen z enorodnim optičnim vlaknom kategorije C vrste IEC 60793-2-50 kategorije B1.3 ali B6a_1 ali B6a_2

Ta evropski standard vsebuje začetne dimenzijske, optične, mehanske in okoljske zahteve za delovanje, ki jih morajo na začetku svoje življenjske dobe izpolnjevati enorodni simpleksni konektorski sestavi tipa FPFT (tovarniško poliran, terensko spajanje) (vtič–pretvornik–vtič), pretvorniki, da so lahko kategorizirani kot izdelki, skladni s standardom EN. FPFT je oblikovan za metode mehanskih in varjenih spojnih mest. Lastnosti delovanja so določene za spojeno kombinacijo med vtičem FPFT in vtičem, standardiziranim po EN, iz skupine standardov EN 50377 (konfiguracija 1), ali med dvema vtičema FTFP (konfiguracija 2). Vlakno znotraj vtiča FPFT v tem evropskem standardu je standardno enorodno vlakno z nizko vodno cono dušenja, kot je opredeljeno kot B1.3, ki je terensko spojeno z vlaknom B1.3 ali na upogibanje neobčutljivim enorodnim vlaknom, opredeljenim kot B6_a1 ali B6_a2 v standardu EN 60793-2-50. Mešanje standardnih in na upogibanje neobčutljivih vlaken v povezavi povzroča znatno notranje slabljenje zaradi neujemanja premera polja načina. Ti konektorji so namenjeni vgradnji v stenske izhode ali druge organizatorje vlaken, zato so obravnavani kot v »zaščitenem okolju«, spojijo pa se z 250 μm primarno prevlečenimi ali do 900 μm zaščitenimi vlakni. Da bi se izpolnile mehanske zahteve za delovanje, mora vtič FPFT izpolnjevati optične, okoljske in mehanske zahteve, kot je navedeno v tem evropskem standardu, spojeni vtič pa mora izpolnjevati vse zahteve iz ustrezne skupine standardov EN 50377 za kategorijo C. Medsebojna združljivost med vtičem FPFT in njegovim ustreznim elementom iz standarda EN 50377 se lahko jamči samo, kadar oba vtiča izpolnjujeta enake zahteve za mere vmesnika in geometrijo končnega dela mehanskih konektorjev iz specifikacije izdelka iz standarda EN 50377. V specifikacijah izdelka iz standarda EN 50377 se naključno spojeno delovanje izračuna, kadar sta oba konektorska vtiča spojena z enorodnimi vlakni z uporabo premera polja načina v najslabšem primeru. Opredeljeni razpon premera polja načina v standardih za vlakna (npr. vlakna B1.3) je 8,0 μm do 10,1 μm pri 1310 nm, kar povzroči notranje slabljenje v najslabšem primeru 0,22 dB. Vendar je premer polja načina v skupini specifikacij izdelka EN 50377 omejen na 8,9 μm do 9,5 μm pri 1310 nm. Da bi se dobile naključne vrednosti spojenega delovanja, je v tem evropskem standardu celoten razpon premera polja načina na upogibanje neobčutljivih vlaken, npr. vlaken B6a, omejen na 8,5 μm do 9,5 μm pri 1310 nm. To povzroča notranje slabljenje v najslabšem primeru 0,05 dB.

General Information

• Status: Published
• Publication Date: 31-Oct-2013
• ICS: 33.180.20 - Fibre optic interconnecting devices
• Technical Committee: CLC/TC 86BXA - Fibre optic interconnect, passive and connectorised components
• Current Stage: 6060 - Document made available - Publishing
• Due Date: 01-Nov-2013
• Completion Date: 01-Nov-2013
• Ref Project: SIST EN 50377-17-1:2014 - Connector sets and interconnect components to be used in optical fibre communication systems - Product specifications - Part 17-1: Type FPFT (factory polished field terminated) simplex connector factory terminated with EN 60793-2-50 category B1.3 fibre and field mounted onto IEC 60793-2-50 category B1.3 or B6a_1 or B6a_2 singlemode fibre, category C

Overview

EN 50377-17-1:2013 (CLC) defines product specifications for FPFT (Factory Polished Field Terminated) simplex connectors used in optical fibre communication systems. The standard sets the initial “start of life” dimensional, optical, mechanical and environmental performance requirements for FPFT plugs, adaptors and mated plug combinations (FPFT/EN‑50377 plug or FPFT/FPFT). It targets singlemode fibres-EN 60793‑2‑50 category B1.3 (standard low‑water‑peak) inside the factory‑terminated plug and either B1.3 or bend‑insensitive singlemode fibres (B6a_1 / B6a_2) in the field. FPFT connectors are designed for fusion or mechanical splice termination and are intended for installation in protected environments (e.g., wall outlets, fibre organisers).

Key topics and technical requirements

• Product definition & variants: Simplex FPFT plug/adaptor/plug configurations; product marking and colour coding per clause 3.5 and Table 1.
• Intermateability
  • Mechanical: Guaranteed when both plugs meet the same EN 50377 interface dimensions and endface geometry.
  • Optical: Random‑mate performance calculated using worst‑case mode field diameter (MFD) limits. EN limits MFD to narrower ranges to control intrinsic attenuation.
• Mode field diameter (MFD) and attenuation
  • B1.3 fibre standard range (example): 8.0–10.1 µm at 1310 nm (0.22 dB worst‑case intrinsic attenuation).
  • EN 50377 limits MFD (B1.3) to 8.9–9.5 µm; B6a limited to 8.5–9.5 µm to reduce worst‑case intrinsic attenuation (~0.05 dB).
  • Specified attenuation grades for random mate: Grade B and C values (e.g., configuration 1 B: ≤0.20 dB mean, ≤0.40 dB for ≥97% of measurements).
• Return loss grades: Defined mated and unmated return loss thresholds (e.g., Grade 1 ≥60 dB mated).
• Environment & reliability: Tests correspond to Category C per EN 61753‑1; intended service life ~20 years (reliability requires separate assessment). Terminations supported on 250 µm primary coated or up to 900 µm buffered fibres.
• Testing & documentation: Dimensional, optical, mechanical and environmental tests, test sequences and reporting requirements are specified (see Clauses 5–8 and Annex A/B).

Applications

• Installation inside wall outlets, patch panels and indoor fibre organisers where protected environment connectors are required.
• Small‑form, field‑mounted singlemode terminations for FTTH, indoor distribution and premises cabling using fusion or mechanical splices.
• Scenarios requiring controlled intermateability between factory and field terminated connectors.

Who should use this standard

• Connector manufacturers and product designers
• Component test laboratories and QA teams
• Network planners, installers and system integrators specifying FPFT singlemode connectors
• Compliance and procurement specialists requiring EN‑level product conformity

Related standards

• EN 60793‑2‑50 (singlemode fibre specifications)
• EN 61753‑1 (performance categories and environmental severity)
• EN 61300 (test and measurement methods)
• Other parts of EN 50377 series (intermateable connector product specifications)

Keywords: EN 50377-17-1, FPFT connector, factory polished field terminated, singlemode fibre, B1.3, B6a, mode field diameter, optical connector specification, category C.

Standards Content (Sample)

SLOVENSKI STANDARD
01-januar-2014
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Connector sets and interconnect components to be used in optical fibre communication
systems - Product specifications - Part 17-1: Type FPFT (factory polished field
terminated) simplex connector factory terminated with EN 60793-2-50 category B1.3
fibre and field mounted onto IEC 60793-2-50 category B1.3 or B6a_1 or B6a_2
singlemode fibre, category C
Ta slovenski standard je istoveten z: EN 50377-17-1:2013
ICS:
33.180.20 3RYH]RYDOQHQDSUDYH]D Fibre optic interconnecting
RSWLþQDYODNQD devices
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.

EUROPEAN STANDARD
EN 50377-17-1
NORME EUROPÉENNE
November 2013
EUROPÄISCHE NORM
ICS 33.180.20
English version
Connector sets and interconnect components to be used in optical fibre
communication systems -
Product specifications -
Part 17-1: Type FPFT (factory polished field terminated) simplex
connector factory terminated with EN 60793-2-50 category B1.3 fibre and
field mounted onto IEC 60793-2-50 category B1.3 or B6a_1 or B6a_2
singlemode fibre, category C
Jeux de connecteurs et composants Steckverbindersätze und
d'interconnexion à utiliser dans les Verbindungselemente für
systèmes de communication par fibres Lichtwellenleiter-
optiques - Datenübertragungssysteme -
Spécifications de produits - Produktnormen -
Partie 17-1: Connecteur simplex de type Teil 17-1: Bauart FPFT- (vorpolierter und
FPFT (poli en usine et monté sur le feldkonfigurierbarer) Simplex-
terrain) raccordé en usine à une fibre de la Steckverbinder mit einer Faser der
catégorie B1.3 selon l'EN 60793 2 50 et Kategorie B1.3 nach IEC 60793-2-50
monté sur le terrain sur une fibre vorkonfektioniert und feldmontierbar an
unimodale de catégorie B1.3 ou B6_a1 ou Einmodenfasern der Kategorien B1.3 oder
B6_a2 selon la CEI 60793 2 50, Catégorie B6a_1 oder B6a_2 nach IEC 60793-2-50
C für Kategorie C
This European Standard was approved by CENELEC on 2013-08-26. CENELEC members are bound to comply
with the CEN/CENELEC Internal Regulations which stipulate the conditions for giving this European Standard
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 European Standard 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, Former Yugoslav Republic of Macedonia, France, Germany,
Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, the Netherlands, Norway, Poland,
Portugal, Romania, Slovakia, Slovenia, Spain, Sweden, Switzerland, Turkey and the United Kingdom.

CENELEC
European Committee for Electrotechnical Standardization
Comité Européen de Normalisation Electrotechnique
Europäisches Komitee für Elektrotechnische Normung

CEN-CENELEC Management Centre: Avenue Marnix 17, B - 1000 Brussels

© 2013 CENELEC - All rights of exploitation in any form and by any means reserved worldwide for CENELEC members.
Ref. No. EN 50377-17-1:2013 E
Contents Page
Foreword . 4
1 Scope . 8
1.1 Product definition . 8
1.2 Intermateability . 8
1.2.1 Mechanical intermateability . 8
1.2.2 Optical intermateability . 8
1.3 Operating environment . 8
1.4 Reliability . 8
1.5 Quality assurance . 8
2 Normative references . 9
3 Description . 10
3.1 General . 10
3.2 Plug . 10
3.3 Adaptor . 10
3.4 Materials . 10
3.5 Dimensions . 10
3.6 Colour and marking . 10
4 Variants . 11
4.1 Terminated plug . 11
4.2 Identification of variants . 11
5 Dimensional requirements – Ferrule endface geometry after termination . 12
6 Tests . 13
6.1 Sample configuration . 13
6.2 Test and measurement methods . 13
6.3 Test sequence . 13
6.4 Pass/fail criteria . 13
7 Test report . 14
8 Testing requirements . 14
8.1 Dimensional and marking requirements . 14
8.2 Optical performance requirements . 14
8.3 Mechanical performance requirements . 16
8.4 Environmental performance requirements . 18
Annex A (normative) Sample size and product sourcing requirements . 20
Annex B (informative) Reference connector details . 21
B.1 General information . 21
B.2 Reference connector details . 21
Bibliography . 22

3 EN 50377-17-1:2013
Figures
Figure 1 — PC style plug — PC ferrule endface geometry — After termination . 12
Figure 2 — APC style plug — APC ferrule endface geometry — After termination . 12

Tables
Table 1 — Preferred colour scheme . 11
Table 2 — Plug variants . 11
Table 3 — Grade B and C plug variant FPFT plug . 11
Table 4 — Optical performance requirements . 14
Table 5 — Mechanical performance requirements . 16
Table 6 — Environmental performance requirements . 18
Table A.1 — Sample size and product sourcing requirements . 20
Table B.1 — Reference connector details . 21

Foreword
This document (EN 50377-17-1:2013) has been prepared by CLC/TC 86BXA "Fibre optic interconnect,
passive and connectorised components".
The following dates are fixed:
(dop) 2014-08-26
• latest date by which this document has
to be implemented at national level by
publication of an identical national
standard or by endorsement
(dow) 2016-08-26
• latest date by which the national
standards conflicting with this
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 [and/or CEN] shall not be held responsible for identifying any or all such patent rights.
EN 50377 is composed of the following parts:
 EN 50377-2 (all parts), Connector sets and interconnect components to be used in optical fibre
communication systems — Product specifications;
 EN 50377-3-1, Connector sets and interconnect components to be used in optical fibre communication
systems — Product specifications — Part 3-1: Type SG terminated on IEC 60793-2-10 category A1a,
A1b or equivalent multimode fibre for category C;
 EN 50377-4 (all parts), Connector sets and interconnect components to be used in optical fibre
communication systems — Product specifications;
 EN 50377-5-1, Connector sets and interconnect components to be used in optical fibre communication
systems - Product specifications — Part 5-1: Type EC terminated on IEC 60793-2 category B1.1
singlemode fibre;
 EN 50377-6 (all parts), Connector sets and interconnect components to be used in optical fibre
communication systems — Product specifications;
 EN 50377-7 (all parts), Connector sets and interconnect components to be used in optical fibre
communication systems — Product specifications;
 EN 50377-8 (all parts), Connector sets and interconnect components to be used in optical fibre
communication systems — Product specifications;
 EN 50377-9 (all parts), Connector sets and interconnect components to be used in optical fibre
communication systems — Product specifications;
 EN 50377-10 (all parts), Connector sets and interconnect components to be used in optical fibre
communication systems - Product specifications;
 EN 50377-11-1, Connector sets and interconnect components to be used in optical fibre communication
systems — Product specifications — Part 11-1: Type MF terminated on IEC 60793-2-50 category B1.1
and B1.3 singlemode fibre for category C;

5 EN 50377-17-1:2013
 EN 50377-13 (all parts), Connector sets and interconnect components to be used in optical fibre
communication systems — Product specifications;
 EN 50377-14-1, Connector sets and interconnect components to be used in optical fibre communication
systems — Product specifications — Part 14-1: Cords with IEC 60793-2-50 singlemode category B1.1
and B1.3 fibre for category C;
 EN 50377-15-1, Connector sets and interconnect components to be used in optical fibre communication
systems — Product specifications — Part 15-1: Type MPO with 12-fibre PPS ferrules terminated on
IEC 60793-2 category A1a multimode fibre for 50/125 micron multimode fibre;
 EN 50377-16-1, Connector sets and interconnect components to be used in optical fibre communication
systems - Product specifications — Part 16-1: Type LF3 APC simplex terminated on IEC 60793-2-50
category B1.1 and B1.3 singlemode fibre with titanium composite ferrule for category C;
 EN 50377-17-1, Connector sets and interconnect components to be used in optical fibre communication
systems — Product specifications — Part 17-1: Type FPFT (factory polished field terminated) simplex
connector factory terminated with EN 60793-2-50 category B1.3 fibre and field mounted onto IEC 60793-
2-50 category B1.3 or B6a_1 or B6a_2 singlemode fibre, category C [the present document];
1)
 prEN 50377-17-2 , Connector sets and Interconnect components to be used in optical fibre
communication systems — Product specifications — Part 17-2: Type FPFT (factory polished field
terminated) simplex connector factory terminated with EN 60793-2-50 category B1.3 fibre and field
mounted onto tight jacket cable containing IEC 60793-2-50 category B1.3 or B6a1 or B6a 2 single mode
fibre (with restricted MFD), Category C.

1) Currently under development.

Connector sets and interconnect components to be used in optical fibre communication systems –
Product specifications
Part 17-1: Type FPFT (factory polished field terminated) simplex connector factory
terminated with EN 60793-2-50 category B1.3 fibre and field mounted onto IEC 60793-2-50
category B1.3 or B6a_1 or B6a_2 singlemode fibre, category C
Performance
Configuration: 1) FPFT Plug/adaptor/plug Application: For use in IEC Category C
and/or
Attenuation grades: Configuration 1 FPFT/50377
2) FPFT Plug/adaptor/
(random mate)
B B: ≤ 0,20 dB mean
f
FPFT plug
≤ 0,40 dB for ≥ 97 % of
measurements
C C: ≤ 0,35 dB mean
f
≤ 0,70 dB for ≥ 97 % of
measurements
Fibre category: EN 60793-2-50  Configuration 2 FPFT/FPFT
Types B1.3, B6a_1 or B6a_2
B B : ≤ 0,35 dB mean
f f
(with restricted MFD)
≤ 0,55 dB for ≥ 97 % of
measurements
C C : ≤ 0,40 dB mean
f f
≤ 0,75 dB for ≥ 97 % of
measurements
Cable type: Primary or secondary coated Return loss grade: 1: ≥ 60 dB mated and
fibre 250 μm or up to 900 μm ≥ 55 dB unmated
See Table 2 2: ≥ 45 dB
3: ≥ 35 dB
Related documents:
2)
prEN 50411-3-5 Fibre organisers and closures to be used in optical fibre communication systems —
Product specifications — Part 3-5: Wall outlet
EN 60793-2-50 Optical fibres — Part 2-50: Product specifications — Sectional specification for class B
single-mode fibres (IEC 60793-2-50)
EN 60794-2 Optical fibre cables — Part 2: Indoor cables — Sectional specification (IEC 60794-2)
EN 61300 (all parts) Fibre optic interconnecting devices and passive components — Basic test and
measurement procedures (IEC 61300, all parts)
EN 61753-1 Fibre optic interconnecting devices and passive components performance
standards — Part 1: General and guidance for performance standards (IEC 61753-1)

2) At draft stage.
7 EN 50377-17-1:2013
Outline and maximum dimensions (mm):
For B1.3 fibres              For B6_a1 and B6_a2 fibres
60 REF.
70 REF.
R15 MIN
1 Scope
1.1 Product definition
This European Standard contains the initial, start of life dimensional, optical, mechanical and environmental
performance requirements that a Factory Polished Field Terminated (FPFT) single mode simplex connector
set (plug adaptor plug), adaptor will meet in order for it to be categorised as an EN standard product.
The FPFT is designed for either fusion or mechanical splice methods. The performance is specified for the
mated combination between a FPFT plug and an EN standardised plug from the EN 50377 series
(configuration 1) or between two FTFP plugs (configuration 2). The fibre specified inside the FPFT plug in this
European Standard is standard single mode fibre with low water peak as specified as B1.3, which is field,
mated to B1.3 fibre or bend insensitive single mode fibre specified as B6_a1 or B6_a2 in EN 60793-2-50.
Mixing standard and bend insensitive fibres in a connection causes a considerable intrinsic attenuation due to
mode field diameter mismatch.
These connectors are intended to be installed inside wall outlets or other fibre organisers, and are therefore
considered as being in a “protected environment” and are terminated onto either 250 μm primary coated or up
to 900 μm buffered fibres.
Since different variants and grades of performance are permitted, product marking details are given in 3.5.
1.2 Intermateability
1.2.1 Mechanical intermateability
In order to meet mechanical performance requirements, the FPFT plug will meet the optical, environmental
and mechanical requirements as stated in this European Standard and the mated plug will meet the all
requirements of the relevant EN 50377 series for category C. Intermateability between the FPFT plug and its
standard EN 50377 counterpart can only be guaranteed when both plugs meet the same EN 50377 product
specification mechanical connector interface dimensions and endface geometry requirements.
1.2.2 Optical intermateability
In EN 50377 product specifications, the random mated performance is calculated when the two connector
plugs have been terminated with single-mode fibres using a worst case MFD. The specified MFD range in
fibre standards (e.g. B1.3 fibres) is 8,0 μm to 10,1 μm at 1 310 nm, which causes 0,22 dB worst case intrinsic
attenuation. However, in EN 50377 product specification series, the MFD is limited to 8,9 μm to 9,5 μm at
1 310 nm. In this European Standard, in order to achieve the random mate performance values, the total MFD
range of bend insensitive fibres, e.g. B6a fibres, is limited to 8,5 μm to 9,5 μm at 1 310 nm. This causes a
worst case intrinsic attenuation of 0,05 dB.
1.3 Operating environment
The tests selected, combined with the severities and durations, are representative of a category C
environment as defined in EN 61753-1. The FPFT plugs are terminated on to 250 µm primary coated or up to
900 µm buffered fibres and are specified to be located in a protected environment.
1.4 Reliability
Whilst the anticipated service life expectancy of the product in this environment is 20 years, compliance with
this European Standard does not guarantee the reliability of the product. This should be predicted using a
recognised reliability assessment programme.
1.5 Quality assurance
Compliance with this European Standard does not guarantee the manufacturing consistency of the product.
This should be maintained using a recognised quality assurance programme.

9 EN 50377-17-1:2013
2 Normative references
The following documents, in whole or in part, are normatively referenced in this document and are
indispensable for its application. For dated references, only the edition cited applies. For undated references,
the latest edition of the referenced document (including any amendments) applies.
EN 50377 (all parts), Connector sets and interconnect components to be used in optical fibre communication
systems — Product specifications
EN 61300-2-1, Fibre optic interconnecting devices and passive components — Basic test and measurement
procedures — Part 2-1: Tests — Vibration (sinusoidal) (IEC 61300-2-1)
EN 61300-2-2, Fibre optic interconnecting devices and passive components — Basic test and measurement
procedures — Part 2-2: Tests — Mating durability (IEC 61300-2-2)
EN 61300-2-4, Fibre optic interconnecting devices and passive components — Basic test and measurement
procedures — Part 2-4: Tests — Fibre/cable retention (IEC 61300-2-4)
EN 61300-2-5, Fibre optic interconnecting devices and passive components — Basic test and measurement
procedures — Part 2-5: Tests — Torsion (IEC 61300-2-5)
EN 61300-2-12, Fibre optic interconnecting devices and passive components — Basic test and measurement
procedures — Part 2-12: Tests — Impact (IEC 61300-2-12)
EN 61300-2-17, Fibre optic interconnecting devices and passive components — Basic test and measurement
procedures — Part 2-17: Tests — Cold (IEC 61300-2-17)
EN 61300-2-18, Fib
...