IEC PAS 61755-3-31:2007

Fibre optic connector optical interfaces - Part 3-31: Optical interface - 8 degrees angled PC end-face PPS rectangular ferrule, single mode fibre

This Publicly Available Specification is part of IEC 61755 and defines certain dimensional limits that an angled PC end-face multi-fibre rectangular ferrule having two guide-holes for positioning two alignment pins and using polyphenylene sulphide (PPS) material with a Young's modulus of less than 20 GPa has to meet in order to comply with specific requirements for interconnections. Ferrules made from the material specified in this document are suitable for use in category C as defined in IEC 61753-1-1.

General Information

• Status: Withdrawn
• Publication Date: 15-Feb-2007
• Withdrawal Date: 23-Mar-2010
• ICS: 33.180.20 - Fibre optic interconnecting devices
• Technical Committee: SC 86B - Fibre optic interconnecting devices and passive components
• Current Stage: WPUB - Publication withdrawn
• Start Date: 26-Mar-2010
• Completion Date: 14-Feb-2026

Standards Content (Sample)

PUBLICLY
IEC
AVAILABLE
PAS 61755-3-31
SPECIFICATION
First edition
Pre-Standard
2007-02
Fibre optic connector optical interfaces –
Part 3-31:
Optical interface – 8 degrees angled PC end-face
PPS rectangular ferrule, single mode fibre

Reference number
IEC/PAS 61755-3-31:2007(E)
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PUBLICLY
IEC
AVAILABLE
PAS 61755-3-31
SPECIFICATION
First edition
Pre-Standard
2007-02
Fibre optic connector optical interfaces –
Part 3-31:
Optical interface – 8 degrees angled PC end-face
PPS rectangular ferrule, single mode fibre

 IEC 2007  Copyright - all rights reserved
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For price, see current catalogue

– 2 – PAS 61755-3-31  IEC:2007(E)

INTERNATIONAL ELECTROTECHNICAL COMMISSION

____________
FIBRE OPTIC CONNECTOR OPTICAL INTERFACES –

Part 3-31: Optical interface – 8 degrees angled PC end-face

PPS rectangular ferrule, single mode fibre

FOREWORD
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8) Attention is drawn to the Normative references cited in this publication. Use of the referenced publications is
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A PAS is a technical specification not fulfilling the requirements for a standard but made

available to the public.
IEC-PAS 61755-3-31 has been processed by subcommittee 86B: Fibre optic interconnecting
devices and passive components, of IEC technical committee 86: Fibre optics.
The text of this PAS is based on the This PAS was approved for
following document: publication by the P-members of the
committee concerned as indicated in
the following document:
Draft PAS Report on voting
86B/2386/NP 86B/2436/RVN
Following publication of this PAS, which is a pre-standard publication, the technical committee
or subcommittee concerned will transform it into an International Standard.
This PAS shall remain valid for an initial maximum period of three years starting from
2007-01. The validity may be extended for a single three-year period, following which it shall
be revised to become another type of normative document or shall be withdrawn.

PAS 61755-3-31  IEC:2007(E) – 3 –

FIBRE OPTIC CONNECTOR OPTICAL INTERFACES –

Part 3-31: Optical interface – 8 degrees angled PC end-face

PPS rectangular ferrule, single mode fibre

1 Scope
This part of IEC 61755 defines certain dimensional limits that an angled PC end-face multi-fibre

rectangular ferrule having two guide-holes for positioning two alignment pins and using

polyphenylene sulphide (PPS) material with a Young’s modulus of less than 20 GPa has to meet
in order to comply with specific requirements for interconnections. Ferrules made from the
material specified in this document are suitable for use in category C as defined in IEC 61753-1-1.
2 Normative references
The following referenced documents are indispensable for the application of this document.
For dated references, only the edition cited applies. For undated references, the latest edition
of the referenced document (including any amendments) applies.
IEC 61753-1-1, Fibre optic interconnecting devices and passive components performance
standard – Part 1: General and guidance – Interconnecting devices
IEC 61754-5, Fibre optic connector interface – Part 5: Type MT connector family
IEC 61754-7, Fibre optic connector interfaces – Part 7: Type MPO connector family
IEC 61754-10, Fibre optic connector interfaces – Part 10: Type Mini-MPO connector family
IEC 61754-18, Fibre optic connector interfaces – Part 18: Type MT-RJ connector family
IEC 61755-1, Fibre optic connector optical interfaces – Part 1: Optical interfaces for single
mode non-dispersion shifted fibre – General and guidance
3 Description
The performance of the optical interface for an angled PC end-face multi-fibre rectangular
ferrule is determined by the accuracy with which the optical datum targets of two mating
ferrules are aligned with each other. There are three conditions affecting the alignment of two
optical datum targets, lateral alignment, angular alignment and axial alignment.

The specified end-face parameters in this standard are required to provide physical contact
between all fibre cores in the mated rectangular ferrules when the ferrules are placed in the
fibre optic connector interfaces described in IEC 61754-5, IEC 61574-7, IEC 61754-10 and
IEC 61754-18 and tested to conditions for a controlled environment as defined in category C
in IEC 61755-1.
The specified lateral and angular parameters are required to provide the performance grades
as specified IEC 61753-1.
Parameters influencing the lateral and angular alignment of the optical fibre axes include
• fibre hole position deviation from designated distance;
• clearance between fibre hole diameter and fibre cladding diameter;
• fibre hole angular misalignment;

– 4 – PAS 61755-3-31  IEC:2007(E)

• fibre core concentricity relative to the cladding diameter;

• clearance between guide hole diameter and alignment pin diameter;

• the amount of angled PC polishing in axial direction.

Parameters influencing the axial alignment of the optical fibre axes include

• end-face flatness;
• end-face angle in the X-axis;

• end-face angle in the Y-axis;

• fibre protrusion/undercut;
• maximum difference in fibre height
...