The publ cation in the IEC 613 0 series contain information on mec anical an en ironmental testin proced res an me s rement proced res relatin to fibre o tic intercon ectin devices an p
Trang 1Part 1: General and guidance
fondament ales d'essais et de mesures –
Partie 1: Général t és et l gnes direct rices
Trang 2THIS PUBLICATION IS COPYRIGHT PROT CTED
Copyr ight © 2 16 IEC, Ge e a, Switzer la d
Al r i hts r es r ve Unle s oth r wis s e ifi d, n p r t of this p blc tio ma b r epro u e or uti z d in a y form
or b a y me n ,ele tr onic or me h nic l in lu in p oto o yin a d microfim, with ut p r mis io in wr itin fr om
eith r IEC or IEC's memb r Natio al Commite in th c u tr y of th r eq e ter If y u h v a y q e tio s a o t IEC
c p r i ht or h v a e q iry a o t o tainin a ditio al r i hts to this p blc tio , ple s c nta t th a dr es b low or
y ur lo al IEC memb r Natio al Commite for f ur th r infor matio
Droits d r epro u tio r és r vé Sa f in ic tio c ntrair e, a c n p r tie d c te p blc tio n p ut êtr e r epr od ite
ni uti s e s u q elq e forme q e c s it et p r a c n pr oc d , éle tr oniq e o mé a iq e, y c mp s la p oto o ie
et le micr ofims, s n la c r d é r it d l EC o d Comité n tio al d l EC d p y d d ma d ur Si v u a e d s
q e tio s s r le c p r i ht d l EC o si v u d sire o te ir d s dr oits s p léme tair es s r c te p blc tio , uti s z
le c or do n e ci-a r ès o c nta te le Comité n tio al d l EC d v tr e p y d ré id n e
Th Inter natio al Ele tr ote h ic l Commis io (IEC) is th le din glo al or ga iz tio th t pr ep r es a d p bls e
Intern tio al Sta d r ds for al ele tr i al ele tr onic a d relate te h olo ie
A bout IEC publc tio s
Th te h ic l c nte t of IEC p blc tio s is k pt u d r c n ta t re iew b th IEC Ple s ma e s r e th t y u h v th
late t e itio , a c r r ig n a or a ame dme t mig t h v b e p bls e
IEC Catalo u - webstore.e ch/cat alo u
Th st an -alo e a plc at io for c on ult in t he e t ire
biblo ra hic al informat io o IEC Int ern tio al St an ard ,
Te h ic al Sp cific at io s, Tec hnic al R ep rt s a d ot her
d c ume t s A v aia le for PC, Ma OS, A ndroid Ta let s a d
iPa
IEC publc t io s s arch - w w w.e ch/s arch ub
Th a v anc ed s arc h e a le t o fin IEC p blc t io s b a
v riety of c riteria (efere c e n mb r, text, t ec hnic l
c mmit t ee,…) It als giv es informat io o projec t s, re lac ed
Ele tro edia - www.ele tro edia.org
Th world's le din o ln dic t io ary of elec t ro ic a d
elec t ric l t erms c ont ainin 2 0 0 t erms a d d finitio s in
En ls a d Fre c , wit h e uiv le t t erms in 15 a dit io al
la g a e A ls k nown a t he Int ern t io al Ele t rot ec hnic al
V oc ab lary (IEV ) o ln
IEC Glos ar y - st d.e ch/glos ary
6 0 0 elec t rote h ic l t ermin lo y e t rie in En ls a d
Fre c ex t rac t ed fom t he Terms a d Definit io s cla s of
IEC p blc tio s is u d sin e 2 0 Some e trie h v b e
c lec t ed fom e rler p blc at io s of IEC TC 3 , 7 , 8 a d
CIS R
IEC Cu t omer Servic Centre - webst ore.e ch/cs
If y ou wis t o giv u your fe d ac k o t his p blc t io or
n e furt her a sist an e,ple s c ont ac t t he Cu t omer Servic
Ce t re: c sc@ie c h
A pro os de l'IEC
L Commis io Ele trote h iq e Inter natio ale (IEC) e t la pr emièr e org nis tio mo diale q i éla ore et p ble d s
Nor me intern tio ale p ur to t c q i a tr ait à léle tr i ité, à léle tr oniq e et a x te h olo ie a p r enté s
A pro os de publc t io s IEC
L c nte u te h iq e d s p blc tio s IEC e t c n tamme t r ev Ve i e v u a s r er q e v u p s é e lé itio la
plu ré e te, u c r r ig n um o ame d me t p ut a oir été p blé
Cat alo u IEC - webstore.e ch/cat alo u
A pplc t io a t on me p ur c n ult er tou le re s ig eme t s
biblo ra hiq e s r le Norme intern t io ale ,
Sp cific t io s t ec niq e , R ap ort s t ec hniq e et a t re
d c ume t s d l EC Dis o ible p ur PC, Ma OS, t ablett es
A ndroid et iPa
R echerche de publc t io s IEC - w w w.e ch/se rch ub
L rec herc e a a c ée p rmet d t ro v r d s p blc at io s IEC
e ut ils nt difére t s crit ère (n méro d référe c , t ex te,
c mit é d’ét ud s,…) Ele d n e a s i d s informat io s s r le
projet s et le p blc t io s remplac ée o ret iré s
IEC J st Publshed - webstore.e ch/j st publshed
R est ez informé s r le n uv ele p blc at io s IEC Ju t
Pu ls e d t ai e le n uv ele p blc atio s p ru s
Dis o ible e lg e et a s i u e fois p r mois p r emai
Ele tro edia - www.ele tro edia.org
L premier dic t io n ire e lg e d t erme élec tro iq e et
élec t riq e I c nt ie t 2 0 0 t erme et d finit io s e a glais
et e fa ç is, ain i q e le t erme é uiv ale t s d n 15
la g e a dit io n le Eg leme t a p lé V oc b laire
Ele t rot ec hniq e Int ern tio al (IEV ) e lg e
Glos aire IEC - st d.e ch/glos ary
6 0 0 e t ré s termin lo iq e éle t rot ec hniq e ,e a glais
et e fa ç is, ext raites d s article Terme et Définit io s d s
p blc t io s IEC p ru s d p is 2 0 Plu c rt ain s e t ré s
a t érie re ex t rait es d s p blc at io s d s CE 3 , 7 , 8 et
CIS R d l EC
Servic Clent s - webstore.e ch/cs
Si v u d sire n u d n er d s c mme t aire s r c t t e
p blc at io o si v u a e d s q e t io s c nt act ez-n u :
c c@ie c
Trang 3Part 1: General and guidance
Dispositifs d'interconnex ion et composant s passifs fibroniques – Procédures
fondament ales d'ess is et de mesures –
Partie 1: Général t és et l gnes direct rices
Trang 4CONTENTS
FOREWORD 4
INTRODUCTION 6
1 Sco e 7
2 Normative ref eren es 7
3 Terms, def i ition an a breviation 8
3.1 Terms an def i ition 8
3.2 Ab reviation 10 4 Req irements f or the IEC 613 0-2 series an the IEC 613 0-3 series 10 4.1 Req irements f or the IEC 613 0-2 series 10 4.2 Req irements f or the IEC 613 0-3 series 10 4.2.1 General req irements 10 4.2.2 Req irements for at en ation variation 10 5 Stan ard atmospheric con ition 10 6 Sig if i an e of the n merical value of a q antity 1
6.1 General 1
6.2 Quantity expres ed as nominal value with toleran e 11
6.3 Quantity expres ed as a ran e of values 12
7 Gra hical s mb ls an terminolog 12
8 Saf ety 12
9 Calbration 13
9.1 General 13
9.2 Rou d ro in cal bration proced re 13
10 L u c con ition 13
10.1 General 13
10.2 Multimode lau c con ition f or A1b f ibre 13
10.3 Multimode lau c con ition f or A3 f ibre 14
10.4 Sin le-mode lau c con ition 14
An ex A (normative) Multimode lau c con ition req irement f or me s rin
at en ation of comp nents terminated on IEC 6 7 3-2-10 typ A1a an A1b f ibres 16
A.1 General 16
A.2 Tec nical b c grou d 16
A.3 EF template 16
A.3.1 Ap l ca le typ s of o tical f ibres 16
A.3.2 En ircled f l x 16
A.3.3 EF template example 16
A.4 Target lau c an up er an lower toleran e b n s f or at en ation
me s rements of A1a an A1b o tical f ibre con ection 17
A.4.1 General 17
A.4.2 Limits on EF 17
A.5 EAF template 18
A.5.1 Ap l ca le typ s of o tical f ibres 18
A.5.2 En ircled an ular f l x 18
A.5.3 EAF template example 18
A.6 Target lau c an up er an lower toleran e b n s f or at en ation
me s rements of A3 o tical f ibre con ection 19
Trang 5A.6.1 General 19
A.6.2 Limits on EAF 19
Bibl ogra h 2
Fig re A.1 – EF template example 17
Fig re A.2 – En ircled an ular f l x template example 19
Ta le 1 – Stan ard atmospheric con ition 1
Ta le 2 – Exp cted u certainty f or me s red aten ation of sin le con ection f or
A1b f ibre 14
Ta le 3 – Exp cted u certainty f or me s red aten ation of sin le con ection f or
A3 f ibre 1
4
Ta le A.1 – EF req irements for 5 µm core f ibre at 8 0 nm 17
Ta le A.2 – EF req irements for 5 µm core f ibre at 1 3 0 nm 18
Ta le A.3 – EF req irements for 6 ,5 µm f ibre at 8 0 nm 18
Ta le A.4 – EF req irements for 6 ,5 µm f ibre at 1 3 0 nm 18
Ta le A.5 – EAF req irements f or NA of 0,3 an 2 0 µm core f ibre at 8 0 nm 19
Trang 6INTERNATIONAL ELECTROTECHNICAL COMMISSION
1 Th Intern tio al Ele trote h ic l Commis io (IEC) is a worldwid org niz tio for sta d rdiz tio c mprisin
al n tio al ele trote h ic l c mmite s (IEC Natio al Commite s) Th o je t of IEC is to promote
intern tio al c -o eratio o al q e tio s c n ernin sta d rdiz tio in th ele tric l a d ele tro ic f i ld To
this e d a d in a ditio to oth r a tivitie , IEC p bls e Intern tio al Sta d rd , Te h ic l Sp cif i atio s,
Te h ic l Re orts, Pu lcly Av ia le Sp cific tio s (PAS) a d Guid s (h re f ter refere to a “IEC
Pu lc tio (s)”) Th ir pre aratio is e tru te to te h ic l c mmite s; a y IEC Natio al Commite intere te
in th s bje t d alt with ma p rticip te in this pre aratory work Intern tio al g v rnme tal a d n
n-g v rnme tal org niz tio s laisin with th IEC als p rticip te in this pre aratio IEC c la orate clo ely
with th Intern tio al Org niz tio for Sta d rdiz tio (ISO) in a c rd n e with c n itio s d termin d b
a re me t b twe n th two org niz tio s
2) Th formal d cisio s or a re me ts of IEC o te h ic l maters e pre s, a n arly a p s ible, a intern tio al
c n e s s of o inio o th rele a t s bje ts sin e e c te h ic l c mmite h s re re e tatio fom al
intere te IEC Natio al Commite s
3) IEC Pu lc tio s h v th form of re omme d tio s f or intern tio al u e a d are a c pte b IEC Natio al
Commite s in th t s n e Whie al re s n ble eforts are ma e to e s re th t th te h ic l c nte t of IEC
Pu lc tio s is a c rate, IEC c n ot b h ld re p n ible for th wa in whic th y are u e or f or a y
misinterpretatio b a y e d u er
4) In ord r to promote intern tio al u iformity, IEC Natio al Commite s u d rta e to a ply IEC Pu lc tio s
tra s are tly to th ma imum e te t p s ible in th ir n tio al a d re io al p blc tio s An div rg n e
b twe n a y IEC Pu lc tio a d th c r e p n in n tio al or re io al p blc tio s al b cle rly in ic te in
th later
5) IEC its lf d e n t pro id a y ate tatio of c nformity In e e d nt c rtific tio b die pro id c nformity
a s s me t s rvic s a d, in s me are s, a c s to IEC mark of c nformity IEC is n t re p n ible for a y
s rvic s c rie o t b in e e d nt c rtif i atio b die
6) Al u ers s o ld e s re th t th y h v th late t e itio of this p blc tio
7) No la i ty s al ata h to IEC or its dire tors, emplo e s, s rv nts or a e ts in lu in in ivid al e p rts a d
memb rs of its te h ic l c mmite s a d IEC Natio al Commite s for a y p rs n l injury, pro erty d ma e or
oth r d ma e of a y n ture wh ts e er, wh th r dire t or in ire t, or f or c sts (in lu in le al fe s) a d
e p n e arisin o t of th p blc tio , u e of, or rela c u o , this IEC Pu lc tio or a y oth r IEC
Pu lc tio s
8) Ate tio is drawn to th Normativ refere c s cite in this p blc tio Us of th refere c d p blc tio s is
in is e s ble for th c re t a plc tio of this p blc tio
9) Ate tio is drawn to th p s ibi ty th t s me of th eleme ts of this IEC Pu lc tio ma b th s bje t of
p te t rig ts IEC s al n t b h ld re p n ible for id ntifyin a y or al s c p te t rig ts
International Stan ard IEC 613 0-1 has b en pre ared by s bcommite 8 B: Fibre o tic
intercon ectin devices an p s ive comp nents, of IEC tec nical commit e 8 : Fibre Optic
This fourth edition can els an re laces the third edition publ s ed in 2 1 This edition
con titutes a tec nical revision
This edition in lu es the f ol owin sig if i ant tec nical c an es with resp ct to the previou
edition:
a) recon ideration of the terms an def i ition ;
b) ad ition of Clau e 4
Trang 7The text of this stan ard is b sed on the fol owin doc ments:
Ful inf ormation on the votin f or the a proval of this stan ard can b f ou d in the re ort on
votin in icated in the a ove ta le
This publcation has b en draf ted in ac ordan e with the ISO/IEC Directives, Part 2
A lst of al p rts in the IEC 613 0 series, publ s ed u der the general title, Fibre o tic
interc n e ting a d p s iv c mp n nts – Ba ic test a d me s reme t pro edure , can b
f ou d on the IEC we site
The commit e has decided that the contents of this publ cation wi remain u c an ed u ti
the sta i ty date in icated on the IEC we site u der "htp:/we store.iec.c " in the data
related to the sp cif i publ cation At this date, the publ cation wi b
• recon rmed,
• with rawn,
• re laced by a revised edition, or
Trang 8The publ cation in the IEC 613 0 series contain information on mec anical an
en ironmental testin proced res an me s rement proced res relatin to fibre o tic
intercon ectin devices an p s ive comp nents They are inten ed to b u ed to ac ieve
u if ormity an re rod cibi ty in en ironmental testin proced res an me s rement
The term "test proced re" ref ers to proced res commonly k own as mec anical an
en ironmental tests The expres ion "en ironmental con itionin " an "en ironmental
testin " ref er to the en ironments to whic comp nents or eq ipment may b exp sed so that
an as es ment may b made of their p rf orman e u der the con ition of u e, tran p rt an
storage
The term "me s rement proced re" ref ers to those me s rements whic are neces ary
to as es the ph sical an o tical c aracteristic of a comp nent an may also b u ed
b f ore, d rin or af ter a test proced re to me s re the ef fects of en ironmental con itionin or
testin The return los an aten ation tests ar e examples of me s rement proced res
The req irements for the p rforman e of comp nents or eq ipment s bjected to the test an
me s rement proced res des rib d in this p rt of IEC 613 0 are not in luded The relevant
sp cif i ation f or the device u der test defi es the al owed p rf orman e l mits
When draf tin a sp cifi ation or purc ase contract, only those tests whic are neces ary for
the relevant comp nents or eq ipment takin into ac ou t the tec nical an economic
asp cts s ould b sp cified
The mec anical an en ironmental test proced res are contained in the IEC 613 0-2 series
an the me s rement proced res in the IEC 613 0-3 series Eac test or me s rement
proced re is publ s ed as a stan -alone publcation so that it may b modif ied, exp n ed or
can el ed without having an ef fect on an other test or me s rement proced re However it
s ould b noted that, where practical, ref eren e is made to other stan ard as o p sed to
re e tin al or p rt of alre d existin stan ard As an example, the cold test f or f ibre o tic
a p ratu ref ers to IEC 6 0 8-2-1, but it also provides other ne ded information s c as
purp se, recommen ed severities an a l st of items to b sp cif ied
Multiple method may b contained in a test or me s rement proced re As an example,
several method of me s rin aten ation are contained in the aten ation me s rement
proced re
If more than one method is contained in a test or me s rement proced re, the ref eren e
method may b identif ied
The tests in this stan ard p rmit the p rf orman e of comp nents or eq ipment to b
comp red To as es the overal q al ty of a prod ction lot, the test proced res s ould b
a pl ed in ac ordan e with a s ita le sampl n plan an may b s p lemented by a pro riate
ad itional tests, if neces ary
To provide tests a pro riate to the dif f erent inten ities of an en ironmental con ition, some of
the test proced res have a n mb r of degre s of severity These diferent degre s of severity
are o tained by varyin the time, temp rature or some other determinin f actor se arately or
in combination
Trang 9FIBRE OPTIC INTERCONNECTING
Part 1: General and guidance
This p rt of IEC 613 0 provides general inf ormation an g idan e f or the b sic test an
me s rement proced res def i ed in the IEC 613 0-2 an IEC 613 0-3 series for
intercon ectin devices an p s ive comp nents
This stan ard s ould b u ed in combination with the relevant sp cif i ation whic wi def i e
the tests to b u ed, the req ired degre of severity f or e c of them, their seq en e, if
relevant, an the p rmis ible p rforman e l mits In the event of con ict b twe n this b sic
stan ard an the relevant sp cifi ation, the lat er wi take preceden e
The f olowin doc ments, in whole or in p rt, are normatively ref eren ed in this doc ment an
are in isp n a le f or its a pl cation For dated ref eren es, only the edition cited a pl es For
u dated ref eren es, the latest edition of the referen ed doc ment (in lu in an
amen ments) a pl es
IEC 6 0 0-7 1, I ntern tio al Electrotec nic l Vo a ulary – Ch pter 7 31: Optic l fibre
IEC 6 617, Gra hic l s mb ls for dia rams (avai a le at ht p:/ std.iec.c /iec6 617)
IEC 6 7 3-2-10, Optic l fibre – P art 2-10: P roduct s e ific tio s – Se tio al s e ific tio for
c teg ry A1 multimod e fibre
IEC 6 7 3-2-3 , Optic l fibre – P art 2-3 : P rod uct s e ific tio s – Se tio al s e ific tio for
c teg ry A3 multimod e fibre
IEC 6 7 3-2-4 , Optic l fibre – P art 2-4 : P rod uct s e ific tio s – Se tion l s e ific tion for
c teg ry A4 multimod e fibre
IEC 6 82 -1, Safety of las r products – P art 1: Equipme t clas ific tio a d re uireme ts
IEC 6 82 -2, Safety of las r products – P art 2: Safety of o tic l fibre c mmu ic tion s stems
(OFCS)
IEC 612 0-1-4, Fibre o tic c mmu ic tio s b y tem test pro edure – P art 1-4: Ge eral
c mmu ic tio s b y tems – Lig t s urc e circled flu me s reme t method
IEC 612 0-4-1, Fibre o tic c mmu ic tio s b y tem test pro edure – P art 4-1: In tall d
c ble plant – Multimode atten atio me s reme t
IEC 613 0-2 (al p rts), Fibre o tic interc n e tin d evic s a d p s iv c mp ne ts – Ba ic
Trang 10IEC 613 0-3 (al p rts), Fibre o tic interc n e tin d evic s a d p s iv c mp n nts – Ba ic
te t a d me s reme t pro edure – Ex amin tio s a d me s reme ts
IEC 6130 -3-1, Fibre o tic interc n e ting devic s a d p s iv c mp n nts – Ba ic test a d
me s reme t pro edure – P art 3-1: Ex amin tio s a d me s reme ts – Vis al ex aminatio
IEC 6130 -3-3 , Fibre o tic interc n e tin de ic s a d p s iv c mp n nts – Ba ic te t
a d me s reme t pro edure – P art 3-35: Examin tio s a d me s reme ts – Vis al
in p ctio of fibre o tic c n e tors a d fibre-stub tra s eiv rs
IEC 6130 -3-5 , Fibre o tic interc n e tin devic s a d p s iv c mp n nts – Ba ic te t
a d me s reme t pro edure – P art 3-53: Ex aminatio s a d me s reme ts – Encircled
a g lar flux (EAF) me s reme t method b s d o two-dime sion l far field d ata fom step
ind ex multimode wa e uid e (in lud in fibre)
tec nical o eration that con ists of the determination of one or more c aracteristic of a given
prod ct, proces or service ac ordin to a sp cif ied proced re an normal y con ists of the
f ol owin ste s:
a) pre aration (where req ired);
b) pre-con itionin (where req ired);
c) initial examination an me s rement (where req ired);
d) con itionin ;
e) recovery (where req ired);
f) f i al examination an me s rement
treatment of a DUT with the o ject of removin or p rtly cou teractin the ef fects of its
previou en ironmental history
3.1.5
conditionin
exp s re of a DUT to en ironmental con ition for a sp cif ied d ration in order to determine
the ef fects of s c con ition on the DUT
Trang 11proces of o tainin one or more values that can re sona ly b atributed to a q antity
[SOURCE: IEC 6 0 0:2 10, 1 2-0 -01, modif ied – The ad erb "exp rimental y" has b en
removed f rom the def i ition, as wel as the notes
3.1.9
e circle flu
EF
fraction of c mulative ne r f ield p wer to the total output p wer as a f un tion of radial
distan e from the o tical centre of the core, defi ed by Eq ation (1),
∫
∫
=
Rr
dxx
x I
dxx
x I
rE
00
)(
)(
)(
(1)
where
I(x) is the ne r f ield inten ity prof ile as a f un tion of adial p sition, r;
R is the maximum ran e of integration
Note 1 to e try: E s al b me s re a c rdin to IEC 612 0- -4
3.1.10
e circle a gular flux
EAF
f raction of c mulative f ar f ield p wer to the total output p wer as a f un tion of in ident an le θ
f rom the o tical central axis of the far f ield p tern, defi ed by Eq ation (2),
θθ
ϕ
ϕθ
θθ
2
0
30
ddr
I
ddr
I
EAF
)(
c os
)sin(
),(
)(
c os
)sin(
),(
ma)
θma is the maximum ran e of integration
Note 1 to e try: E AF s al b me s re a c rdin to IEC 613 0-3-5
Trang 123.2 Abbre iations
For the purp ses of this doc ment, the fol owin a breviation a ply:
DMA dif f erential mode disp rsion
4 Re uirements f or the IEC 61300-2 series and the IEC 61300-3 series
4.1 Re uireme ts for the IEC 613 0-2 s rie
The IEC 613 0-2 series s al contain these items:
• method of calc lation (where req ired);
• me s rement u certainty;
• detai s to b sp cif ied
4.2.2 Req ireme ts f or at e uation v riation
For intercon ection devices, the aten ation variation is def i ed as the p ak-to-p ak variation
of aten ation d rin the test, u les otherwise sp cif ied
For p s ive o tical comp nents, the at en ation variation is def i ed as a plu or min s
deviation from the original value at the start of the test, u les otherwise sp cif ied
5 Standard atmospheric conditions
Stan ard atmospheric con ition s al b control ed within some ran e to en ure pro er
cor elation of data o tained from me s rements an tests con u ted in variou faci ties Test
an me s rement proced res s al b con u ted u der the f ol owin atmospheric con ition
u les other wise sp cified In some cases, sp cial ambient con ition may b ne ded an can
b sp cif ied in the relevant sp cifi ation
The stan ard ran e of atmospheric con ition for car yin out me s rements an tests is set
out in Ta le 1
Trang 13Table 1 – Sta dard atmosph ric conditions
The n merical values of q antities for the variou p rameters ( emp rature, h midity, stres ,
d ration, o tical p wer levels, etc.) given in the b sic method of en ironmental an o tical
testin con titutin the IEC 613 0-2 series an the o tical an ph sical me s rements
con titutin the IEC 613 0-3 series are expres ed in dif f erent way ac ordin to the ne d of
e c in ivid al test
The two cases that most f req ently arise are:
a) the q antity is expres ed as a nominal value with a toleran e;
b) the q antity is expres ed as a ran e of values
For these two cases, the sig if i an e of the n merical value is dis u sed in 6.2 an 6.3
6.2 Qua tity e pre s d a nominal v lu with tolera c
Examples of two f orms of presentation are:
%
The expres ion of a q antity as a n merical value in icates the intention that the test s ould
b car ied out at the stated value The o ject of statin toleran es is to take ac ou t of the
f ol owin f actors in p rtic lar:
• the dif f ic lties in reg latin some devices an their drif t (u desired slow variation) d rin
the test;
• u certainties of in trument;
• non-u iformity of en ironmental p rameters, f or whic no sp cif i toleran es are given, in
the test sp ce in whic the DUTs are located
These toleran es are not inten ed to alow latitu e in the adju tment of the values of the
p rameter within the test sp ce Hen e, when a q antity is expres ed by a nominal value with
a toleran e, the test a p ratu s al b adju ted so as to obtain this nominal value makin
al owan e for the u certainties of in trument
In prin iple, the test a p ratu s al not b adju ted to maintain a l mitin value of the
toleran e zone, even if its u certainty is so smal as to en ure that this lmitin value would
not b ex e ded
Trang 14EX MPLE: If th q a tity is e pre s d n meric ly a 10 ± 5, th te t a p ratu is a ju te to maintain th
targ t v lu of 10 ma in alowa c for th u c rtaintie of in trume t a d in n c s is a ju te to maintain a
targ t v lu of 9 or 10
In order to avoid an l mitin value a pl ca le to the DUT d rin the car yin out of the test, it
may b neces ary in some cases to set the test a p ratu ne r to one toleran e lmit
In the p rtic lar case where the q antity is expres ed by a nominal value with a u iateral
toleran e (whic is general y the case u les ju tified otherwise by sp cial con ition , f or
example, a non-l ne r resp n e), the test a p ratu s al b set as close as p s ible to the
nominal value (whic is also a toleran e l mit takin ac ou t of the u certainty of
me s rement, whic de en s on the a p ratu u ed f or the test (in lu in the in truments
u ed to me s re the values of the p rameters)
EX MPLE: If th q a tity is e pre s d n meric ly a 10 %
0
5+
% a d th te t a p ratu is c p ble of a
o eral u c rtainty in th c ntrol of th p rameter of ±1 %, th n th te t a p ratu is a ju te to maintain a targ t
v lu of 9 % If, o th oth r h n , th o eral u c rtainty is ± 2,5%, th n th a ju tme t is s t to maintain a
The u e of word in expres in a ran e le d to ambig ity; f or example, the phrase "from
8 % to 10 %" is recog ised as "ex lu in the values of 8 an 10 " by some re ders, as
"8 an 10 are in lu ed" by others The u e of s mb ls, for example > 8 or ≥ 8 , is
generaly les l kely to b ambig ou an is therefore to b pref er ed
The expres ion of a q antity as a ran e of values in icates that the value to whic the test
a p ratu is adju ted has only a smal in uen e on the res lt of the test
Where the u certainty of the control of the p rameter (in lu in u certainties of in trument
p rmits, an desired value within the given ran e may b c osen For example, if it is stated
that the temp rature s al b from 18 °C to 2 °C, an value within this ran e can b u ed
(but it is not inten ed that the temp rature s ould b programmed to vary over the ran e)
7 Graphical symbols and terminology
The terminolog u ed in the interpretation an pre aration of f ibre o tic test an
me s rement proced res s al b taken f rom IEC 60 5 -7 1
Gra hical s mb ls u ed f or the pre aration an interpretation of f ibre o tic test an
me s rement proced res s al b selected where p s ible from IEC 6 617
8 Saf ety
The precaution f or car yin out f ibre o tic me s rements, as f ar as laser radiation is
con erned, are given in IEC 6 8 5-1 Fibre o tic comp nents an s stems may emit
hazardou radiation This may oc ur
a) at sources;
Trang 15b) in tran mis ion s stems d rin in tal ation, d rin service or intentional inter uption an
f ai ure or u intentional inter uption;
The eq ipment u ed s al have a val d cal bration certif i ate in ac ordan e with the a pl ca le
q al ty s stem for the p riod over whic the testin is done Pref era ly international or
national stan ard s ould b ado ted (e.g IEC 61315) The cal bration s ould b trace ble to
a national stan ard if avai a le
In cases where no cal bration stan ard exists, the man facturer or la oratory car yin out the
test s al state the u certainty of the test eq ipment to their b st k owled e
9.2 Round ro in c l bration proc d re
Where the u certainty is u k own, it may b neces ary to u e a rou d ro in cal bration
proced re f or cal bratin me s rin in truments (e.g gau es)
10 Launch c nditions
10.1 Ge eral
The los c aracteristic of a comp nent freq ently de en , to a very sig if i ant extent, on
how the l g t is lau c ed into the input f ibre It is recommen ed that the lau c con ition are
u ed f or al o tical me s rements In order to o tain re e ta le me s rements, it is
neces ary to u e stan ard lau c con ition , whic are cle rly def i ed, an can b d pl cated
e si y an precisely
To ac ieve con istent res lts, f irst in p ct an , if neces ary, cle n an in p ct again al
con ector plu s an ada tors prior to me s rement Vis al examination s al b u dertaken
in ac ordan e with IEC 613 0-3-1 Ad itional y, en -faces of o tical con ectors s al b
in p cted in ac ordan e with IEC 613 0-3-3
10.2 Multimod la n h con itions f or A1b f ibre
An ex A provides a proced re for esta l s in the lau c con ition f or multimode f ibre of
category A1 defi ed in IEC 6 7 3-2-10 The lau c con ition are def i ed by toleran e b n s
on a target en ircled fl x (EF) metric
NOT IEC 6 614 a d IEC TR 612 2- 1 pro id u eful informatio o multi-mo e la n h c n itio
These toleran e b n s have b en cre ted for testin in tal ed f ibre o tic l n s as def i ed in
IEC 612 0-4-1, to l mit the variation in me s red aten ation The exp cted toleran es f or
l n s (with multiple con ectors) are dif f erent to those f or a sin le con ection When the
me s red EF of the source is within the sp cif ied toleran e b n s, the exp cted u certainty
f or the me s red at en ation value of a sin le con ection, in dB, is ac ordin to Ta le 2
Trang 16Table 2 – Expe te u c rtainty f or me s re
at e uation of single conn ctions for A1b fibre
Ta le 2 is val d for aten ation values ≤ 0,7 dB
When calc latin the total u certainty of the multimode aten ation me s rement, the
u certainty d e to the modal variation s al b in lu ed
10.3 Multimod la n h con itions f or A3e fibre
An ex A provides a proced re f or esta l s in the lau c con ition for category A3
multimode f ibre def i ed in IEC 6 7 3-2-3 The lau c con ition is defi ed by toleran e b n
on a target en ircled an ular f l x (EAF) metric
NOT IEC 613 0-3-5 pro id s u eful informatio o multi-mo e la n h c n itio
These toleran e b n s have b en cre ted f or testin con ectin devices, to l mit the variation
in me s red aten ation When the me s red EAF of the source is within the sp cif ied
toleran e b n , the exp cted u certainty for the me s red at en ation value of a sin le
con ection, in dB, is ac ordin to Ta le 3
Table 3 – Expe te u c rtainty f or me s re
at e uation of sin le conne tions for A3 fibre
Fibre n minal core
Ta le 3 is val d for aten ation values ≤ 2,0 dB
When calc latin the total u certainty of the multimode aten ation me s rement, the
u certainty d e to the modal variation s al b in lu ed
10.4 Single-mode la nc conditions
For sin le-mode comp nents, the wavelen th of the source (in lu in the total sp ctral width)
s al b lon er than the c t-of f wavelen th of the fibre The de loyment an len th of the fibre
on the input s al b s c that an hig er order modes that may initial y b lau c ed are
s f f iciently at en ated
For p larization sen itive devices, the state of p larization of input p wer may b sig if i ant
an , when req ired, s al b sp cif ied in the relevant sp cif i ation
The p wer in the f ibre s al b set hig enou h, within the p wer level, not to generate non
-l ne r s aterin ef fects
Precaution s al b taken to en ure that clad in modes do not af f ect the me s rement
Clad in modes s al b elminated either as a natural f un tion of the f ibre co tin in the
Trang 17input an output f ibres, or by ad in clad in mode elminators if sp cif ied in the relevant
sp cif i ation
Precaution s al b taken to en ure that ex es ive b n in of the f ibres on either the input
or output f ibre, whic could af f ect the me s rement, do s not oc ur The f ibres s ould remain
f i ed in p sition d rin the me s rement
The sta i ty of the lau c s al b s ita le f or the me s rement to b u dertaken The
sta i ty s al b maintained over the me s rement time an o erational temp rature ran e
Trang 18Annex A
(normativ )
Multimode launch condition requirement f or measuring at enuation
of components terminated on IEC 60793-2-10 type A1a and A1b f ibres
An ex A des rib s the general multimode lau c con ition req irements u ed f or me s rin
at en ation The purp se of these req irements is to en ure con isten y of f ield
me s rements with f actory me s rements an con isten y of f actory or f ield me s rements
when dif ferent typ s of test eq ipment are u ed
Use of these lau c con ition s ould en ure that when a comp nent is f actory tested it
me ts the req irements of f ield testin af ter in tal ation of the prod ct in the field
For multimode ste in ex (SI) fibre, def i ed by IEC 6 7 3-2-3 an IEC 6 7 3-2-4 ,
En ircled An ular Flu (EAF) me s rement method, def i ed by IEC 613 0-3-5 , is u ed
A.2 Technical ba kground
Lig t sources, typical y u ed in me s rin at en ation, may have varyin modal distribution
when lau c ed into multimode fibre These dif ferin modal distribution , combined with the
dif f erential mode aten ation (DMA) in erent in most multimode comp nents, commonly
cau e me s rement variation when me s rin aten ation of multimode comp nents For
example, aten ation me s rement variation can oc ur when two simi ar l g t sources or
dif ferent lau c cord are u ed
In the p st legac (LED b sed) a pl cation had a wide p wer bu get whic in most cases
mas ed the varian e in res lt b tween the factory an f ield me s rement
As tec nolog has evolved, the s stem req irements for at en ation have b come more
strin ent Deman in a pl cation req irements are drivin the ne d f or ac urate an
re rod cible multimode at en ation me s rements over a variety of f ield-test in truments
Aten ation me s rement exp riments with dif ferent f ield-test in truments havin the same
stan ard -compl ant set-up prod ce me s rement variation that are in u ed by their
dif ferin lau c con ition
A.3 EF template
A.3.1 Appl c ble type of optic l fibre
These g idel nes are s ita le f or 5 µm an 6 ,5 µm core f ibres, b th with 12 µm clad in
diameter
A.3.2 Encircle f lux
The EF is determined from the ne r f ield me s rement of the lg t comin from the en of the
ref eren e grade lau c in cord
A.3.3 EF template e ample
An example of an en ircled f l x template f or 5 µm core f ibre at 8 0 nm is s own in
Fig re A.1
Trang 19Fig re A.1 – EF template e ample
A.4 Target launch and upper and lower tolerance bands f or at enuation
me surements of A1a and A1b optical f ibre connections
The sp cif ied lau c con ition in this doc ment is val d for aten ation me s rement of
multimode f ibre o tic con ection The lau c con ition for aten ation me s rements f or
multimode con ectors s al me t the EF req irements of Ta les A.1 to A.4 when me s red at
the output of the referen e con ector
A.4.2 Limits on EF
The l mits f or the EF are derived from a target ne r field an a set of b u dary con ition
desig ed to con train the variation in aten ation in u ed by variation in the source to within
± 10 % or ± X dB, whic ever is largest, of the value that would b o tained if the target lau c
were u ed The varia le X is a toleran e thres old that varies with f ibre core size an
wavelen th ac ordin to the values in Ta le 2 The lmits are derived f rom the retical
Trang 20Table A.2 – EF re uireme ts f or 5 µm core fibre at 1 3 0 nm
A.5.1 Appl c ble type of optic l fibre
These g idel nes are s ita le for 2 0 µm core f ibres with 2 0 µm clad in diameter
A.5.2 Encircle a gular f lu
The EAF is determined from the f ar field me s rement of the l g t comin from the en of the
ref eren e grade lau c in cord
A.5.3 EAF template e ample
An example of an en ircled an ular f l x template f or 2 0 µm core f ibre at 8 0 nm is s own
in Fig re A.2
Trang 21NOT Alth u h th u it for th Eq atio (2), whic is th d f i itio of EAF, is ra ia , th u it for th h riz ntal
a is is d gre
Figure A.2 – Encircle a gular f lu template e ample
A.6 Target launch and upper and lower tolerance bands f or at enuation
me surements of A3e optical f ibre conne tions
The sp cif ied lau c con ition in this doc ment is val d for aten ation me s rement of
multimode f ibre o tic con ection The lau c con ition for aten ation me s rements f or
multimode con ectors s al me t the EAF req irements of Ta les A.5 when me s red at the
output of the ref eren e con ector
A.6.2 Limits on EAF
The l mits for the EAF is derived from a target f ar f ield an a set of b u dary con ition
desig ed to con train the variation in aten ation in u ed by variation in the source to within
± 10 % or ± X dB, whic ever is largest, of the value that would b o tained if the target lau c
were u ed The varia le X is a toleran e thres old that varies with f ibre core size an
wavelen th ac ordin to the values in Ta le 2 The l mits are derived f rom the retical
Trang 22Bibl ography
IEC 6 0 8-2-1, Enviro me tal testin – P art 2-1: Te ts – Te t A: Cold
IEC 61315, Ca bration offibre o tic p wer meters
IEC 6 614, Fibre o tics – L u c c nd itio re uireme ts for me s ring multimod e
atten ation
IEC TR 6 614-2, Fibre o tic – Multimode lau c c nditio s – P art 2: Determin tio of lau c
c nd ition re uireme ts for me s rin multimode atten ation
_ _ _ _ _ _