1、 IEC 62077 Edition 3.0 2015-11 INTERNATIONAL STANDARD Fibre optic interconnecting devices and passive components Fibre optic circulators Generic specification IEC 62077:2015-11(en) THIS PUBLICATION IS COPYRIGHT PROTECTED Copyright 2015 IEC, Geneva, Switzerland All rights reserved. Unless otherwise s
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11、c specification INTERNATIONAL ELECTROTECHNICAL COMMISSION ICS 33.180.20 ISBN 978-2-8322-2988-0 Registered trademark of the International Electrotechnical Commission Warning! Make sure that you obtained this publication from an authorized distributor. 2 IEC 62077:2015 IEC 2015 CONTENTS FOREWORD . 4 1
12、 Scope 6 2 Normative references 6 3 Terms and definitions 7 3.1 Basic terms . 7 3.2 Component terms 8 3.3 Performance parameters . 8 4 Requirements 10 4.1 Classification 10 4.1.1 General . 10 4.1.2 Type 11 4.1.3 Style 11 4.1.4 Variant . 12 4.1.5 Normative reference extensions. 12 4.2 Documentation 1
13、3 4.2.1 Symbols 13 4.2.2 Specification system 13 4.2.3 Drawings . 15 4.2.4 Tests and measurements . 15 4.2.5 Test reports . 16 4.2.6 Instructions for use 16 4.3 Standardization system . 16 4.3.1 Interface standards 16 4.3.2 Performance standards 17 4.3.3 Reliability standards 17 4.3.4 Interlinking .
14、 18 4.4 Design and construction 19 4.4.1 Materials . 19 4.4.2 Workmanship . 19 4.5 Performance . 19 4.6 Identification and marking . 19 4.6.1 General . 19 4.6.2 Variant identification number . 19 4.6.3 Component marking . 20 4.6.4 Package marking . 20 4.7 Packaging . 20 4.8 Storage conditions 20 4.9
15、 Safety . 21 Annex A (informative) Example of technology of bulk circulator based on magneto- optic effect 22 Annex B (informative) Example of application of a circulator 23 Bibliography 24 Figure 1 Completely circulated type configuration 8 Figure 2 Incompletely circulated type configuration 8 IEC
16、62077:2015 IEC 2015 3 Figure 3 Insertion loss . 9 Figure 4 Isolation . 9 Figure 5 Optical circulator style configurations . 12 Figure 6 Standards currently under preparation . 18 Figure 7 Example of a variant identification number . 20 Figure A.1 Example of a circulator . 22 Figure B.1 Example of ap
17、plication of a circulator 23 Table 1 Example of a typical circulator set classification 11 Table 2 The IEC specification structure 14 Table 3 Standards interlink matrix 19 4 IEC 62077:2015 IEC 2015 INTERNATIONAL ELECTROTECHNICAL COMMISSION _ FIBRE OPTIC INTERCONNECTING DEVICES AND PASSIVE COMPONENTS
18、 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
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28、blication. 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. International Standard IEC 62077 has been prepared by subcommittee 86B: Fibre op
29、tic interconnecting devices and passive components, of IEC technical committee 86: Fibre optics. This third edition cancels and replaces the second edition published in 2010. This edition constitutes a technical revision. This edition includes the following significant technical changes with respect
30、 to the previous edition: a) harmonization of some terms and definitions with other generic specifications, b) deletion of assessment level. IEC 62077:2015 IEC 2015 5 The text of this standard is based on the following documents: CDV Report on voting 86B/3862/CDV 86B/3918/RVC Full information on the
31、 voting for the approval of this standard can be found in the report on voting indicated in the above table. This publication has been drafted in accordance with the ISO/IEC Directives, Part 2. The committee has decided that the contents of this publication will remain unchanged until the stability
32、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 reconfirmed, withdrawn, replaced by a revised edition, or amended. A bilingual version of this publication may be issued at a later date. 6 IEC 62077
33、2015 IEC 2015 FIBRE OPTIC INTERCONNECTING DEVICES AND PASSIVE COMPONENTS FIBRE OPTIC CIRCULATORS GENERIC SPECIFICATION 1 Scope This International Standard applies to circulators used in the field of fibre optics bearing all of the following features: they are non-reciprocal optical devices, in whic
34、h 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 is describe
35、d in Annex A. 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 (inclu
36、ding 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
37、http:/std.iec.ch/iec60617) IEC 60695-11-5, Fire hazard testing Part 11-5: Test flames Needle-flame test method Apparatus, confirmatory test arrangement and guidance IEC 60825 (all parts), Safety of laser products IEC 61300 (all parts), Fibre optic interconnecting devices and passive components IEC T
38、R 61930, Fibre optic graphical symbology ISO 129-1, Technical drawings Indication 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, Geom
39、etrical product specifications (GPS) Geometrical tolerancing Tolerances of form, orientation, location and run-out ISO 8601, Data elements and interchange formats Information interchange Representation of dates and times IEC 62077:2015 IEC 2015 7 3 Terms and definitions For the purposes of this docu
40、ment, the terms and definitions given in IEC 60050-731and the following apply. 3.1 Basic terms 3.1.1 port optical fibre or optical fibre connector attached to a passive component for the entry and/or exit of the optical power 3.1.2 transfer matrix n n matrix of coefficients where n is the number of
41、ports, and the coefficients represent the fractional optical power transferred between designated ports Note 1 to entry: In general, the transfer matrix T is: = nn n n n t t t t t t t t T 2 1 ij 22 1 12 11(1) where t ijis the ratio of the optical power P ijtransferred out of port j with respect to i
42、nput power P iinto port i, that is: i ij ij P P t = (2) 3.1.3 transfer coefficient element t ijof the transfer matrix 3.1.4 logarithmic transfer matrix n n matrix of logarithmic transfer coefficients of a ijwhere n is the number of ports Note 1 to entry: In general, the logarithmic transfer matrix A
43、 is: = nn n n n a a a a a a a a A 2 1 ij 22 1 12 11 .(3) where a ij is the optical power reduction, in decibels, out of port j with unit power into port i, that is: ij 10 ij log 10 t a = (4) where t ijis the transfer matrix coefficient. 3.1.5 conducting port pair two ports i and j between which t ij
44、is nominally greater than zero 8 IEC 62077:2015 IEC 2015 3.1.6 isolated port pair two ports i and j between which t ijis nominally zero, and a ijis nominally infinite 3.2 Component terms 3.2.1 fibre optic circulator passive component possessing three or more ports which input and output are cyclic N
45、ote 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. 3.2.2 completely circulated type type of circulator where all ports can function as both input and outpu
46、t. 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 cir
47、culated type configuration 3.2.3 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
48、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 3.3 Performance parameters 3.3.1 insertion loss element a ijof the logarithmic transfer matrix of an input port i and output port j to which optical po
49、wer is transmitted Note 1 to entry: The insertion loss is the reduction in optical power between an input and output port of a passive component (see Figure 3), expressed in decibels and defined as follows: = n i j 10 ij log 10 P P a (5) port 1 port 2 port 3 Circulator IEC port 1 port 2 port 3 Circulator IEC IEC 62077:2015 IEC 2015 9 where P inis the optical power lau
