ISO/FDIS 14881

Integrated optics -- Interfaces -- Parameters relevant to coupling properties

Optique intégrée -- Interfaces -- Paramètres caractérisant les propriétés de couplage

General Information

• Status: Published
• ICS: 31.260 - Optoelectronics. Laser equipment
• Technical Committee: ISO/TC 172/SC 9 - Laser and electro-optical systems
• Drafting Committee: ISO/TC 172/SC 9/WG 7 - Electro-optical systems other than lasers
• Current Stage: 5020 - FDIS ballot initiated: 2 months. Proof sent to secretariat
• Start Date: 14-Jul-2021
• Completion Date: 14-Jul-2021

RELATIONS

• Revised: ISO 14881:2001 - Integrated optics -- Interfaces -- Parameters relevant to coupling properties
• Effective Date: 24-Dec-2016

Standards Content (sample)

FINAL
INTERNATIONAL ISO/FDIS
DRAFT
STANDARD 14881
ISO/TC 172/SC 9
Integrated optics — Interfaces —
Secretariat: DIN
Parameters relevant to coupling
Voting begins on:
2021­07­14 properties
Voting terminates on:
Optique intégrée — Interfaces — Paramètres caractérisant les
2021­09­08
propriétés de couplage
ISO/CEN PARALLEL PROCESSING
RECIPIENTS OF THIS DRAFT ARE INVITED TO
SUBMIT, WITH THEIR COMMENTS, NOTIFICATION
OF ANY RELEVANT PATENT RIGHTS OF WHICH
THEY ARE AWARE AND TO PROVIDE SUPPOR TING
DOCUMENTATION.
IN ADDITION TO THEIR EVALUATION AS
Reference number
BEING ACCEPTABLE FOR INDUSTRIAL, TECHNO­
ISO/FDIS 14881:2021(E)
LOGICAL, COMMERCIAL AND USER PURPOSES,
DRAFT INTERNATIONAL STANDARDS MAY ON
OCCASION HAVE TO BE CONSIDERED IN THE
LIGHT OF THEIR POTENTIAL TO BECOME STAN­
DARDS TO WHICH REFERENCE MAY BE MADE IN
NATIONAL REGULATIONS. ISO 2021
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ISO/FDIS 14881:2021(E)
COPYRIGHT PROTECTED DOCUMENT
© ISO 2021

All rights reserved. Unless otherwise specified, or required in the context of its implementation, no part of this publication may

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ii © ISO 2021 – All rights reserved
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ISO/FDIS 14881:2021(E)
Contents Page

Foreword ........................................................................................................................................................................................................................................iv

Introduction ..................................................................................................................................................................................................................................v

1 Scope ................................................................................................................................................................................................................................. 1

2 Normative references ...................................................................................................................................................................................... 1

3 Terms and definitions ..................................................................................................................................................................................... 1

4 Properties relevant to coupling ............................................................................................................................................................ 5

4.1 General ........................................................................................................................................................................................................... 5

4.2 Chip geometry (see Figure 3) ..................................................................................................................................................... 5

4.3 Waveguide geometry (see Figure 4) ......... ............................................................................................................................ 5

4.4 Fibre tolerances ...................................................................................................................................................................................... 6

4.5 Endface properties (see Figure 5) .......................................................................................................................................... 6

4.6 Spot size ........................................................................................................................................................................................................ 7

Annex A (informative) ........................................................................................................................................................................................................ 8

Bibliography ................................................................................................................................................................................................................................ 9

© ISO 2021 – All rights reserved iii
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ISO/FDIS 14881:2021(E)
Foreword

ISO (the International Organization for Standardization) is a worldwide federation of national standards

bodies (ISO member bodies). The work of preparing International Standards is normally carried out

through ISO technical committees. Each member body interested in a subject for which a technical

committee has been established has the right to be represented on that committee. International

organizations, governmental and non­governmental, in liaison with ISO, also take part in the work.

ISO collaborates closely with the International Electrotechnical Commission (IEC) on all matters of

electrotechnical standardization.

The procedures used to develop this document and those intended for its further maintenance are

described in the ISO/IEC Directives, Part 1. In particular the different approval criteria needed for the

different types of ISO documents should be noted. This document was drafted in accordance with the

editorial rules of the ISO/IEC Directives, Part 2 (see www .iso .org/ directives).

Attention is drawn to the possibility that some of the elements of this document may be the subject of

patent rights. ISO shall not be held responsible for identifying any or all such patent rights. Details of

any patent rights identified during the development of the document will be in the Introduction and/or

on the ISO list of patent declarations received (see www .iso .org/ patents).

Any trade name used in this document is information given for the convenience of users and does not

constitute an endorsement.

For an explanation on the voluntary nature of standards, the meaning of ISO specific terms and

expressions related to conformity assessment, as well as information about ISO's adherence to the

World Trade Organization (WTO) principles in the Technical Barriers to Trade (TBT) see the following

URL: www .iso .org/ iso/ foreword .html.

This document was prepared by Technical Committee ISO/TC 172 Optics and photonics, Subcommittee SC

9, Laser and electro optical systems. In collaboration with the European Committee for Standardization

(CEN) Technical Committee CEN/TC 123, Lasers and photonics , in accordance with the agreement on

technical cooperation between ISO and CEN (Vienna Agreement).

This second edition cancels and replaces the first edition (ISO 14881:2001), which has been technically

revised. The main changes compared to the previous edition are as follows:

— Terminologies that have not been frequently used over the last 5 to 10 years are revised to those

matching to current trends.

— In the revision process, terminologies and definitions are compared to similar terminology

definitions in IEC and harmonized.

Any feedback or questions on this document should be directed to the user’s national standards body. A

complete listing of these bodies can be found at www .iso .org/ members .html.
iv © ISO 2021 – All rights reserved
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ISO/FDIS 14881:2021(E)
Introduction

The aim of this document is to clarify the terms of the field of “integrated optics” and to define a unified

vocabulary. It is expected that this document will be revised periodically to adopt the requirements of

customers and suppliers of integrated optical products. At a later stage, it is planned to add definitions

from other International Standards which deal with integrated optics.

Some of the definitions are closely related to definitions given in IEC 60050-731. Wherever this can lead

to misunderstanding, integrated optics or integrated optical waveguide should be used together with

the defined term.
© ISO 2021 – All rights reserved v
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FINAL DRAFT INTERNATIONAL STANDARD ISO/FDIS 14881:2021(E)
Integrated optics — Interfaces — Parameters relevant to
coupling properties
1 Scope

This document defines the relevant properties for coupling lightwaves into and out of integrated optical

chips (IOC) and chips with photonic integrated circuits (PIC). This document mainly focuses on butt

coupling via the waveguide endfaces. The definitions provide the basis for specifying the elements to be

coupled (e. g. fibres, integrated optical chips) related to coupling properties.
2 Normative references

The following documents are referred to in the text in such a way that some or all of their content

constitutes requirements 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.

ISO 4288, Geometrical Product Specifications (GPS) — Surface texture: Profile method — Rules and

procedures for the assessment of surface texture
ISO 11807­1:—, Integrated optics — Vocabulary — Part 1: Basic terms and symbols

ISO 11807­2, Integrated optics — Vocabulary — Part 2: Terms used in classification

IEC 60793­1­20, Optical fibres — Part 1-20: Measurement methods and test procedures — Fibre geometry

3 Terms and definitions

For the purposes of this International Standard, the terms and definitions given in ISO 11807-1 and

ISO 11807-2 and the following apply.

ISO and IEC maintain terminological databases for use in standardization at the following addresses:

— ISO Online browsing platform: available at https:// www .iso .org/ obp
— IEC Electropedia: available at https:// www .electropedia .org/
Note 1 to entry A list of relevant terms and symbols can be found in Annex A.
3.1
adiabatic coupling

coupling of fibre and tapered waveguide or two waveguides one of which, at least is tapered to utilize

mode coupling without optical power loss for maximum coupling efficiency (3.9)
3.2
anti-reflective coating of endfaces

thin film coating on the endfaces of optical chips designed to reduce the Fresnel loss (3.15)

3.3
array block

mechanical alignment structure of micrometre or submicrometre precision for the reception of optical

fibres adopted in single-fibre coupling (3.21) and fibre array coupling (3.12)

Note 1 to entry: The alignment structures, which are generally arranged in a regular pattern, determine the

position of the fibres with respect to each other. These positions are defined by the fibre's cladding diameter and

the geometry of the alignment structures.
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ISO/FDIS 14881:2021(E)

Note 2 to entry: An array block may have additional guiding structures for the alignment of the array with an

integrated optical chip (see e. g. V-groove array, fixed alignment structure).
3.4
bea
...