Fibre optic interconnecting devices and passive components - Fibre optic circulators - Generic specification

IEC 62077:2022 is available as IEC 62077:2022 RLV which contains the International Standard and its Redline version, showing all changes of the technical content compared to the previous edition.IEC 62077: 2022 applies to circulators used in the field of fibre optics bearing all of the following features:
- they are non-reciprocal optical devices, in which each port is either an optical fibre or fibre optic connector;
- they are passive devices in accordance with the categorization and definition provided in IEC TS 62538;
- they have three or more ports for directionally transmitting optical power.
An example of optical circulator technology and application is described in Annex A and Annex B, respectively. This fourth edition cancels and replaces the third edition published in 2015. This edition constitutes a technical revision. This edition includes the following significant technical changes with respect to the previous edition:
- harmonization of terms and definitions with IEC TS 62627-09;
- change of Clause 4 regarding requirements

Dispositifs d'interconnexion et composants passifs fibroniques - Circulateurs fibroniques - Spécification générique

IEC 62077:2022 est disponible sous forme de IEC 62077:2022 RLV qui contient la Norme internationale et sa version Redline, illustrant les modifications du contenu technique depuis l'édition précédente.L'IEC 62077: 2022 s'applique aux circulateurs utilisés dans le domaine de la fibronique, qui présentent toutes les caractéristiques suivantes:
- ce sont des dispositifs optiques non réciproques, dont chaque port est soit une fibre optique, soit un connecteur fibronique;
- ce sont des dispositifs passifs, conformément à la classification et à la définition données dans l'IEC TS 62538;
- ils disposent d'au moins trois ports pour la transmission de la puissance optique de façon directionnelle.
Un exemple de technologie et d'application de circulateur optique est décrit à l'Annexe A et à l'Annexe B, respectivement. Cette quatrième édition annule et remplace la troisième édition parue en 2015. Cette édition constitue une révision technique. Cette édition inclut les modifications techniques majeures suivantes par rapport à l'édition précédente:
- harmonisation des termes et définitions avec l'IEC TS 62627-09;
- modification de l'Article 4, portant sur les exigences.

General Information

Status
Published
Publication Date
09-Aug-2022
Current Stage
PPUB - Publication issued
Completion Date
10-Aug-2022
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IEC 62077
Edition 4.0 2022-08
INTERNATIONAL
STANDARD
NORME
INTERNATIONALE
Fibre optic interconnecting devices and passive components – Fibre optic
circulators – Generic specification
Dispositifs d'interconnexion et composants passifs fibroniques – Circulateurs
fibroniques – Spécification générique
IEC 62077:2022-08(en-fr)
---------------------- Page: 1 ----------------------
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---------------------- Page: 2 ----------------------
IEC 62077
Edition 4.0 2022-08
INTERNATIONAL
STANDARD
NORME
INTERNATIONALE
Fibre optic interconnecting devices and passive components – Fibre optic
circulators – Generic specification
Dispositifs d'interconnexion et composants passifs fibroniques – Circulateurs
fibroniques – Spécification générique
INTERNATIONAL
ELECTROTECHNICAL
COMMISSION
COMMISSION
ELECTROTECHNIQUE
INTERNATIONALE
ICS 33.180.20 ISBN 978-2-8322-5244-4

Warning! Make sure that you obtained this publication from an authorized distributor.

Attention! Veuillez vous assurer que vous avez obtenu cette publication via un distributeur agréé.

® Registered trademark of the International Electrotechnical Commission
Marque déposée de la Commission Electrotechnique Internationale
---------------------- Page: 3 ----------------------
– 2 – IEC 62077:2022 © IEC 2022
CONTENTS

FOREWORD ........................................................................................................................... 4

1 Scope .............................................................................................................................. 6

2 Normative references ...................................................................................................... 6

3 Terms and definitions ...................................................................................................... 7

3.1 Component terms.................................................................................................... 7

3.2 Performance terms ................................................................................................. 8

4 Requirements .................................................................................................................. 9

4.1 Classification .......................................................................................................... 9

4.1.1 General ........................................................................................................... 9

4.1.2 Technology, port numbers and functions .......................................................... 9

4.1.3 Wavelength bands ........................................................................................... 9

4.1.4 Interface style ................................................................................................ 10

4.2 Documentation ...................................................................................................... 10

4.2.1 Symbols ........................................................................................................ 10

4.2.2 Drawings ....................................................................................................... 10

4.2.3 Tests and measurements ............................................................................... 10

4.2.4 Test report ..................................................................................................... 10

4.2.5 Instructions for use ........................................................................................ 11

4.3 Standardization system ......................................................................................... 11

4.3.1 Interface standards ........................................................................................ 11

4.3.2 Performance standards .................................................................................. 11

4.3.3 Reliability standards ...................................................................................... 11

4.4 Design and construction ........................................................................................ 11

4.4.1 Materials ....................................................................................................... 11

4.4.2 Workmanship ................................................................................................. 11

4.5 Quality .................................................................................................................. 12

4.6 Performance requirements .................................................................................... 12

4.7 Identification and marking ..................................................................................... 12

4.7.1 General ......................................................................................................... 12

4.7.2 Component marking ....................................................................................... 12

4.7.3 Package marking ........................................................................................... 12

4.8 Packaging ............................................................................................................. 12

4.9 Storage conditions ................................................................................................ 12

4.10 Safety ................................................................................................................... 13

Annex A (informative) Example of technology of bulk circulator based on magneto-

optic effect ............................................................................................................................ 14

Annex B (informative) Example of application of a circulator ................................................ 15

Annex C (informative) Examples of interface style ............................................................... 16

Bibliography .......................................................................................................................... 17

Figure 1 – Completely circulated type configuration ................................................................ 7

Figure 2 – Incompletely circulated type configuration .............................................................. 7

Figure 3 – Insertion loss ......................................................................................................... 8

Figure 4 – Isolation ................................................................................................................. 8

Figure A.1 – Example of a circulator ..................................................................................... 14

---------------------- Page: 4 ----------------------
IEC 62077:2022 © IEC 2022 – 3 –

Figure B.1 – Example of application of a circulator ................................................................ 15

Figure C.1 – Examples of interface style for fibre optic circulators ........................................ 16

Table 1 – Example of a typical fibre optic circulator classification ........................................... 9

---------------------- Page: 5 ----------------------
– 4 – IEC 62077:2022 © IEC 2022
INTERNATIONAL ELECTROTECHNICAL COMMISSION
____________
FIBRE OPTIC INTERCONNECTING
DEVICES AND PASSIVE COMPONENTS –
FIBRE OPTIC CIRCULATORS – GENERIC SPECIFICATION
FOREWORD

1) The International Electrotechnical Commission (IEC) is a worldwide organization for standardization comprising

all national electrotechnical committees (IEC National Committees). The object of IEC is to promote international

co-operation on all questions concerning standardization in the electrical and electronic fields. To this end and

in addition to other activities, IEC publishes International Standards, Technical Specifications, Technical Reports,

Publicly Available Specifications (PAS) and Guides (hereafter referred to as “IEC Publication(s)”). Their

preparation is entrusted to technical committees; any IEC National Committee interested in the subject dealt with

may participate in this preparatory work. International, governmental and non-governmental organizations liaising

with the IEC also participate in this preparation. IEC collaborates closely with the International Organization for

Standardization (ISO) in accordance with conditions determined by agreement between the two organizations.

2) The formal decisions or agreements of IEC on technical matters express, as nearly as possible, an international

consensus of opinion on the relevant subjects since each technical committee has representation from all

interested IEC National Committees.

3) IEC Publications have the form of recommendations for international use and are accepted by IEC National

Committees in that sense. While all reasonable efforts are made to ensure that the technical content of IEC

Publications is accurate, IEC cannot be held responsible for the way in which they are used or for any

misinterpretation by any end user.

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any IEC Publication and the corresponding national or regional publication shall be clearly indicated in the latter.

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services carried out by independent certification bodies.

6) All users should ensure that they have the latest edition of this publication.

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8) Attention is drawn to the Normative references cited in this publication. Use of the referenced publications is

indispensable for the correct application of this publication.

9) Attention is drawn to the possibility that some of the elements of this IEC Publication may be the subject of patent

rights. IEC shall not be held responsible for identifying any or all such patent rights.

IEC 62077 has been prepared by subcommittee 86B: Fibre optic interconnecting devices and

passive components, of IEC technical committee 86: Fibre optics. It is an International Standard.

This fourth edition cancels and replaces the third edition published in 2015. This edition

constitutes a technical revision.

This edition includes the following significant technical changes with respect to the previous

edition:
a) harmonization of terms and definitions with IEC TS 62627-09;
b) change of Clause 4 regarding requirements.
---------------------- Page: 6 ----------------------
IEC 62077:2022 © IEC 2022 – 5 –
The text of this International Standard is based on the following documents:
Draft Report on voting
86B/4624/FDIS 86B/4645/RVD

Full information on the voting for its approval can be found in the report on voting indicated in

the above table.
The language used for the development of this International Standard is English.

This document was drafted in accordance with ISO/IEC Directives, Part 2, and developed in

accordance with ISO/IEC Directives, Part 1 and ISO/IEC Directives, IEC Supplement, available

at www.iec.ch/members_experts/refdocs. The main document types developed by IEC are

described in greater detail at www.iec.ch/standardsdev/publications.

The committee has decided that the contents of this document will remain unchanged until the

stability date indicated on the IEC website under webstore.iec.ch in the data related to the

specific document. At this date, the document will be
• reconfirmed,
• withdrawn,
• replaced by a revised edition, or
• amended.
---------------------- Page: 7 ----------------------
– 6 – IEC 62077:2022 © IEC 2022
FIBRE OPTIC INTERCONNECTING
DEVICES AND PASSIVE COMPONENTS –
FIBRE OPTIC CIRCULATORS – GENERIC SPECIFICATION
1 Scope

This document applies to circulators used in the field of fibre optics bearing all of the following

features:

– they are non-reciprocal optical devices, in which each port is either an optical fibre or fibre

optic connector;

– they are passive devices in accordance with the categorization and definition provided in

IEC TS 62538;
– they have three or more ports for directionally transmitting optical power.

An example of optical circulator technology and application is described in Annex A and

Annex B, respectively.
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.
IEC 60027 (all parts), Letter symbols to be used in electrical technology

IEC 60050-731, International Electrotechnical Vocabulary – Chapter 731: Optical fibre

communication, available at http://www.electropedia.org

IEC 60617, Graphical symbols for diagrams, available at http://std.iec.ch/iec60617

IEC 60825 (all parts), Safety of laser products

IEC 61300 (all parts), Fibre optic interconnecting devices and passive components – Basic tests

and measurement procedures
IEC TR 61930, Fibre optic graphical symbology

IEC TS 62627-09, Fibre optic interconnecting devices and passive components – Vocabulary

for passive optical devices

ISO 129-1, Technical product documentation (TPD) – Presentation of dimensions and

tolerances – Part 1: General principles

ISO 286-1, Geometrical product specifications (GPS) – ISO code system for tolerances on

linear sizes – Part 1: Basis of tolerances, deviations and fits

ISO 1101, Geometrical product specifications (GPS) – Geometrical tolerancing – Tolerances of

form, orientation, location and run-out

ISO 8601-1, Date and time – Representations for information interchange – Part 1: Basic rules

---------------------- Page: 8 ----------------------
IEC 62077:2022 © IEC 2022 – 7 –
3 Terms and definitions

For the purposes of this document, the terms and definitions given in IEC 60050-731,

IEC TS 62627-09 and the following apply.

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

addresses:
• IEC Electropedia: available at http://www.electropedia.org/
• ISO Online browsing platform: available at http://www.iso.org/obp
3.1 Component terms
3.1.1
fibre optic circulator

passive component possessing three or more ports which input and output are cyclic

Note 1 to entry: In the case of 3 ports circulator with port 1, port 2 and port 3, supposing optical power is transmitted

from port 1 to port 2, optical power from port 2 is transmitted to port 3.

[SOURCE: IEC TS 62627-09:2016, 3.3.5, modified – The words "passive optical device

(component)" have been replaced with "passive component".]
3.1.2
completely circulated type
type of circulator where all ports function as both input and output

Note 1 to entry: In the case of a 3 port circulator with port 1, port 2 and port 3, where optical power is transmitted

from port 1 to port 2, optical power from port 2 is also transmitted to port 3 and optical power from port 3 is also

transmitted to port 1 (see Figure 1).
Figure 1 – Completely circulated type configuration
3.1.3
incompletely circulated type
type of circulator where a port is either an input or an output

Note 1 to entry: In the case of 3 ports circulator with port 1, port 2 and port 3, supposing optical power is transmitted

from port 1 to port 2, optical power from port 2 is transmitted to port 3 and optical power from port 3 is not transmitted

to port 1 (see Figure 2).
Figure 2 – Incompletely circulated type configuration
---------------------- Page: 9 ----------------------
– 8 – IEC 62077:2022 © IEC 2022
3.2 Performance terms
3.2.1
insertion loss
attenuation

reduction of optical power in an operating wavelength range, when transmitted from an input

port to an output port for a fibre optic circulator

Note 1 to entry: The insertion loss (attenuation) is expressed in decibels and defined as:

 P
a =−10log
 
ij 10
 
 
where
P is the optical power launched into the input port;
P is the optical power received from the output port.

Note 2 to entry: Figure 3 shows the insertion loss (attenuation) for fibre optic circulators.

Figure 3 – Insertion loss

Note 3 to entry: The insertion loss (attenuation) is wavelength, polarization, temperature and port pair dependent.

Generally, the insertion loss is the maximum value over operating wavelength range, all polarization state and all

conducting port pairs.
3.2.2
isolation

reduction of optical power in an operating wavelength range, when transmitted from an output

port to an input port for a fibre optic circulator
Note 1 to entry: The isolation is expressed in decibels and defined as follows:
 
a =−10log  
ji 10
 
 
where
P is the optical power received from the input port;
P is the optical power launched into the output port.
Note 2 to entry: Figure 4 shows the isolation for fibre optic circulators.
Figure 4 – Isolation
---------------------- Page: 10 ----------------------
IEC 62077:2022 © IEC 2022 – 9 –

Note 3 to entry: The isolation is wavelength, polarization, temperature and port pair dependent. Generally, the

isolation is the minimum value over operating wavelength range, all polarization state and all isolated port pairs.

4 Requirements
4.1 Classification
4.1.1 General

Fibre optic circulators are classified either totally or in part in the following categories:

– technology;
– port numbers;
– circulated type;
– wavelength band;
– interface style.

An example of a typical fibre optic circulator classification is given in Table 1.

Table 1 – Example of a typical fibre optic circulator classification
Items Classifications
Technology Magneto-optic Faraday effect;
Port numbers 3
Circulated type Completely circulated type
Wavelength band C band
Interface style Configuration B
Fibre type: IEC 60793-2-50, B-657.B
IEC 61754-4 (SC connector)
4.1.2 Technology, port numbers and functions
Circulators are mainly divided into types according to their configuration.
– Operational technologies:
• magneto-optic Faraday effect;
• magneto-optic Kerr effect.
– Port numbers;
– Circulated type:
• completely circulated type;
• incompletely circulated type.
4.1.3 Wavelength bands
– O-band;
– C-band;
– L-band;
– other wavelength circulators.
---------------------- Page: 11 ----------------------
– 10 – IEC 62077:2022 © IEC 2022
4.1.4 Interface style

The fibre optic circulator style shall be defined on the basis of the following elements:

– input and output port configuration;
– connector set type(s), if any.
NOTE Examples of interface style are provided in Annex C.
4.2 Documentation
4.2.1 Symbols

Graphical and letter symbols shall, whenever possible, be taken from the IEC 60027 series,

IEC 60617 and IEC TR 61930.
4.2.2 Drawings
4.2.2.1 General

The drawings and dimensions given in the relevant specifications shall not restrict detail

construction nor be used as manufacturing drawings.
4.2.2.2 Projection system

Either first angle or third angle projection shall be used for the drawings in documents covered

by this document. All drawings within a document shall use the same projection system and the

drawings shall state which system is used.
4.2.2.3 Dimensional system

All dimensions shall be given in accordance with ISO 129-1, ISO 286-1 and ISO 1101. The

metric system shall be used in all specifications. Dimensions shall not contain more than five

significant digits. When units are converted, a note shall be added in each relevant specification.

4.2.3 Tests and measurements
4.2.3.1 Tests and measurements procedures

The tests and measurements procedures for optical, mechanical, climatic and environmental

characteristics of fibre optic circulators to be used shall be defined and selected preferentially

from the IEC 61300 series. The size measurement method to be used shall be specified in the

relevant specification for dimensions which are specified within a total tolerance zone of

0,01 mm or less.
4.2.3.2 Reference components

Reference components for measurement purposes, if required, shall be specified in the relevant

specification.
4.2.4 Test report

The test reports shall be prepared for each test conducted as required by a relevant

specification. The reports shall be included in the qualification test report and in the periodic

inspection report.
---------------------- Page: 12 ----------------------
IEC 62077:2022 © IEC 2022 – 11 –
Test reports shall contain the following information as a minimum:
– title and date of test;
– test equipment used;
– all applicable test details;
– all measurement values and observations.
4.2.5 Instructions for use
Instructions for use, when required, shall be given by the manufacturer.
4.3 Standardization system
4.3.1 Interface standards

Refer proper references when (in case) the connector is used, such as the IEC 61754 series.

4.3.2 Performance standards

Performance standards (IEC 61753 series) contain a series of tests and measurements (which

may or may not be grouped into a specified schedule depending on the requirements of that

standards) with clearly defined conditions, severities and pass/fail criteria. The tests are

intended to be run on a "one-off" basis to prove the ability of any product to satisfy the

"performance standards" requirement. Each performance standard has a different set of tests,

and/or severities (and/or groupings) representing the requirements of a market sector, user

group or system location.

A product that has been shown to meet all the requirements of a performance standard can be

declared as complying with a performance standard but should then be controlled by a quality

assurance/quality conformance programme.
4.3.3 Reliability standards

Reliability standards are intended to ensure that a component can meet performance

specifications under stated conditions for a stated time period.
4.4 Design and construction
4.4.1 Materials
4.4.1.1 General

All housing materials used in the construction shall be manufactured with materials which meet

the requirements of the relevant specification.
4.4.1.2 Non-flammable materials

When non-flammable materials are required, the requirements shall be specified, and reference

should be made to IEC 60695-11-5. If an alternate standard is used for non-flammable materials,

it shall be declared.
4.4.2 Workmanship

Components and associated hardware shall be manufactured to a uniform quality and shall be

free of sharp edges, burrs or other defects that would affect life, serviceability or appearance.

Particular attention shall be given to neatness and thoroughness of marking, plating, soldering,

bonding, etc.
---------------------- Page: 13 ----------------------
– 12 – IEC 62077:2022 © IEC 2022
4.5 Quality

Fibre optic circulators shall be controlled by the quality assessment procedures and declared.

4.6 Performance requirements

Fibre optic circulators shall meet the performance requirements specified in the relevant

specification.
4.7 Identification and marking
4.7.1 General

Components, associated hardware and shipping packages shall be permanently and legibly

identified and marked when required by the relevant specification.
4.7.2 Component marking

Component marking, if required, should be specified in the relevant specification. The preferred

order of marking is:
a) port identification;
b) direction of optical path (by arrow);
c) manufacturer's part number (including serial number, if applicable);
d) manufacturer's identification mark or logo.

If space does not allow for all the required marking on the component, each unit shall be

individually packaged with a data sheet containing all of the required information which is not

marked.
4.7.3 Package marking
Several devices may be packaged together for shipment.

Package marking, if required, shall be specified in the relevant specification. The preferred

order of marking is:
a) manufacturer's identification mark or logo;
b) manufacturer's part number.

When applicable, individual unit packages (within the sealed package) should be marked with

the reference number of the certified record of released lots, the manufacturer's factory identity

code and the component
...

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