Fibre optic interconnecting devices and passive components - Vocabulary for passive optical devices

IEC TS 62627-09:2016(E), which is a Technical Specification, applies to passive optical devices (components). It provides the definitions which are commonly used in the generic specifications, performance standards and tests and measurement standards for passive optical devices (components) prepared by SC 86B. It has the following three types of terms and definitions:
- basic terms and definitions;
- component terms and definitions;
- performance parameter terms and definitions. The generic specifications for passive optical devices (components) are listed in Annex A. Keywords: terms and definitions for passive optical devices

General Information

Status
Published
Publication Date
23-Oct-2016
Current Stage
PPUB - Publication issued
Completion Date
24-Oct-2016
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IEC TS 62627-09
Edition 1.0 2016-10
TECHNICAL
SPECIFICATION
Fibre optic interconnecting devices and passive components –
Vocabulary for passive optical devices
IEC TS 62627-09:2016-10(en)
---------------------- Page: 1 ----------------------
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IEC TS 62627-09
Edition 1.0 2016-10
TECHNICAL
SPECIFICATION
Fibre optic interconnecting devices and passive components –
Vocabulary for passive optical devices
INTERNATIONAL
ELECTROTECHNICAL
COMMISSION
ICS 33.180.20 ISBN 978-2-8322-3698-7

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

® Registered trademark of the International Electrotechnical Commission
---------------------- Page: 3 ----------------------
– 2 – IEC TS 62627-09:2016 © IEC 2016
CONTENTS

FOREWORD ........................................................................................................................... 3

INTRODUCTION ..................................................................................................................... 5

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

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

3 Terms, definitions and abbreviated terms ........................................................................ 6

3.1 General ................................................................................................................... 6

3.2 Basic terms and definitions ..................................................................................... 6

3.3 Component terms and definitions ............................................................................ 8

3.4 Performance parameter terms and definitions ....................................................... 11

3.5 Abbreviated terms ................................................................................................. 15

Annex A (informative) Generic specifications for passive optical devices ............................. 16

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

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IEC TS 62627-09:2016 © IEC 2016 – 3 –
INTERNATIONAL ELECTROTECHNICAL COMMISSION
____________
FIBRE OPTIC INTERCONNECTING DEVICES
AND PASSIVE COMPONENTS –
Vocabulary for passive optical devices
FOREWORD

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The main task of IEC technical committees is to prepare International Standards. In

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Technical specifications are subject to review within three years of publication to decide

whether they can be transformed into International Standards.

IEC TS 62627-09, which is a Technical Specification, has been prepared by subcommittee

SC 86B: Fibre optic interconnecting devices and passive components, of IEC technical

committee 86: Fibre optics.
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– 4 – IEC TS 62627-09:2016 © IEC 2016
The text of this technical specification is based on the following documents:
Enquiry draft Report on voting
86B/3993/DTS 86B/4016/RVC

Full information on the voting for the approval of this technical specification can be found in

the report on voting indicated in the above table.

This document has been drafted in accordance with the ISO/IEC Directives, Part 2.

A list of all parts in the IEC 62627 series, published under the general title Fibre optic

interconnecting devices and passive components, can be found on the IEC website.

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

the stability date indicated on the IEC website under "http://webstore.iec.ch" in the data

related to the specific publication. At this date, the publication will be
• transformed into an International standard,
• reconfirmed,
• withdrawn,
• replaced by a revised edition, or
• amended.
A bilingual version of this publication may be issued at a later date.
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IEC TS 62627-09:2016 © IEC 2016 – 5 –
INTRODUCTION

SC 86B, Fibre optic interconnecting devices and passive components, specifies several

passive optical devices. Each passive optical device has generic specification and

performance specifications. Generic specifications define terms, definitions and requirements

(classifications, documentations, standardization systems and so on). Some basic terms and

definitions are defined and used in two or more generic specifications. In order to harmonize

terms and definitions in generic specifications, this technical specification defines terms and

definitions commonly used in multiple generic specifications.
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– 6 – IEC TS 62627-09:2016 © IEC 2016
FIBRE OPTIC INTERCONNECTING DEVICES
AND PASSIVE COMPONENTS –
Vocabulary for passive optical devices
1 Scope

This part of IEC 62627, which is a Technical Specification, applies to passive optical devices

(components). It provides the definitions which are commonly used in the generic

specifications, performance standards and tests and measurement standards for passive

optical devices (components) prepared by SC 86B. It has the following three types of terms

and definitions:
• basic terms and definitions;
• component terms and definitions;
• performance parameter terms and definitions.

The generic specifications for passive optical devices (components) are listed in Annex A.

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.
This document contains no normative references.
3 Terms, definitions and abbreviated terms
3.1 General
For the purposes of this document, the following terms and definitions 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
3.2 Basic terms and definitions
3.2.1
port

optical fibre or fibre optic connector attached to a passive component for the entry and/or exit

of optical power
[SOURCE: IEC 60876-1:2014, 3.1.1]
3.2.2
input port
port where the optical power enters the device
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IEC TS 62627-09:2016 © IEC 2016 – 7 –
3.2.3
output port
port where the optical power exits the device
3.2.4
transfer matrix

n × n matrix of coefficients where n is the number of ports, and the coefficients represent the

fractional optical power transferred between designated ports
Note 1 to entry: In general, the transfer matrix T is:
t t .... t
 
11 12 1n
 
T =
 
(1)
 
t t t 
 n1 n2 nn 

where t is the ratio of the optical power P transferred out of port j with respect to input power P into port i, that is:

ij ij i
t =
ij (2)

[SOURCE: IEC 60875-1:2015, 3.1.3, modified – The definition has been rephrased, the last

sentence in note 1 has been deleted, as well as notes 2 and 3.]
3.2.5
transfer coefficient
element t of the transfer matrix
[SOURCE: IEC 60875-1: 2015, 3.1.4]
3.2.6
logarithmic transfer matrix

n × n matrix of logarithmic transfer coefficients of a where n is the number of ports

Note 1 to entry: In general, the logarithmic transfer matrix A is:
a a ... a
 
11 12 1n
 
 
A =
 
(3)
 
a a a
 n1 n2 nn 

where a is the optical power reduction, in decibels, out of port j with unit power into port i,

that is:
a = −10log t
ij 10 ij
(4)
is the transfer coefficient.
where t
3.2.7
logarithmic transfer coefficient
element a of the logarithic transfer matrix
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– 8 – IEC TS 62627-09:2016 © IEC 2016
3.2.8
conducting port pair
two ports i and j between which t is nominally greater than zero

Note 1 to entry: For optical switches of conducting ports, conducting port pair is defined at a specified switching

state. For wavelength-selective branching devices and fibre optic filters, conducting port pair is defined at a

specific wavelength. For wavelength switches, conducting port pair is defined at a specific switching state and a

specified wavelength.
3.2.9
isolated port pair
two ports i and j between which t is nominally zero, and a is nominally infinite
ij ij

Note 1 to entry: For optical switches of isolated ports, isolated port pair is defined at a specified switching state.

For wavelength-selective branching devices and fibre optic filters, isolated port pair is defined at a specific

wavelength. For wavelength switches, isolated port pair is defined at a specific switching state and a specified

wavelength.
3.2.10
port configuration

relation of connection which satisfies the following requirements, between the M port group

possessing M ports and the N port group possessing N ports for passive device possessing n

ports (n = M + N):

a) any port of the M port group is not the relation of conducting, attenuating, splitting, and

coupling with the others of M port group;

b) any port of the N port group is not the relation of conducting, attenuating, splitting, and

coupling with the others of N port group;

c) any port of the M port group can be connected to conducting, attenuating, splitting, and

coupling with any port of N port group;

d) any port of the N port group can be connected to conducting, attenuating, splitting, and

coupling with any port of M port group

Note 1 to entry: In the case of a branching device composed of an input port group possessing M ports and the

output port group possessing N ports, M × N is often expressed even if M is more than N.

Note 2 to entry: In the case of wavelength selective branching device, the connection as conducting, attenuating,

splitting and coupling is for any passband.

Note 3 to entry: In the case of optical switch, the connection as conducting, attenuating, splitting and coupling is

for any state.

Note 4 to entry: The port configuration is expressed as M × N. Unless otherwise noted, N is equal to or larger than

3.3 Component terms and definitions
3.3.1
passive optical device

optical device (component), other than an optical dynamic device or an optical active device,

which does not require external power for its operation, unless to control the stability of its

own characteristics

Note 1 to entry: Passive optical devices (components) may comprise optical detectors for monitoring purposes

only.

[SOURCE: IEC TS 62538:2008, 2.1.3, modified – The term has been changed from "optical

passive device" to "passive optical device", and the bracket "(component)" has been added to

the definition and the note.]
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IEC TS 62627-09:2016 © IEC 2016 – 9 –
3.3.2
fibre optic power control device

passive optical device (component) which controls a transmittance with a designed

wavelength independent transfer coefficient

Note 1 to entry: Transfer coefficient may be controlled for all intensity of input power or for input power over a

threshold power.
3.3.3
optical attenuator

passive optical device (component), which produces a wavelength independent controlled

signal attenuation in an optical fibre transmission line
[SOURCE: IEC 60869-1:2012, 3.2.1, modified – The definition has been rephrased.]
3.3.4
fibre optic isolator
non-reciprocal passive optical device (component) intended to suppress backward

transmittance along an optical fibre transmission line while the forward direction is the

...

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