Fiber Optic Connector Types and Applications

A fiber optic connector is a flexible device that can connect and disconnect fiber optic cable quickly. It offers high reliability, high return loss, low insertion loss, excellent interchangeability, and repeatability.

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Afiberopticconnectorisaflexibledevicethatcanconnectanddisconnectfiberopticcablequickly.It
offershighreliability,highreturnloss,lowinsertionloss,excellentinterchangeability,andrepeatability.
Thisarticlewilldiscussfiberopticconnectorsandtheirtypesandapplications.
WhatisFiberOpticConnector?
Afiberopticconnectorisacomponenttoterminatetheendofafiberopticcableandenables
quickerconnectionanddisconnectionthanfibersplicing.Itneedstobealignedproperlytothe
microscopicglassfiberscompletelytoallocateforcommunication.Inaddition,fiberoptic
connectorprovideshighreliability,highreturnloss,highprecisionalignment,lowinsertionloss,
excellentinterchangeabilityandrepeatability,andeasetouse.

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FiberOpticConnectorComponents
Fiberopticconnectorconsistsoffivecomponents:fiberferrule,connectorsub-assemblybody,
connectorhousing,fibercable,andstressreliefboot.BelowshowsfigureanexampleofanSC
fiberopticconnectorstructure.
FiberFerrule:TheSCfiberopticconnectorisbuiltaroundalongcylindrical2.5mmdiameter
ferrule,madeofceramic(zirconia)ormetal(stainlessalloy).A124um-127umdiameterhigh
precisionholeisdrilledinthecenteroftheferrule,wherestrippedbarefiberisinsertedthrough
andusuallybondedbyepoxyoradhesive.Theendofthefiberisattheendoftheferrule,whereit
istypicallypolishedsmooth.
ConnectorSub-assemblyBody:TheferruleisassembledintheSCsub-assemblybody,whichhas
mechanismstoholdthecableandfiberinplace.Theendoftheferruleisoutofthesub-assembly
bodytomatewithanotherSCconnectorinsideamatingsleeve(i.e.adapter).
ConnectorHousing:Theconnectorhousingcoverstheconnectorsub-assemblybody,which
providesthemechanismforsnappingintoamatingsleeve(adapter)andholdingtheconnectorin
place.
FiberCable:Fibercableandstrengthmember(aramidyarnorKevlar)arecrimpedontothe
connectorsub-assemblybodywithacrimpeyelet.Thisprovidesthestrengthforthemechanical

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handlingoftheconnectorwithoutputtingstressonthefiberitself.
StressReliefBoot:Stressreliefbootcoversthejointbetweentheconnectorbodyandthefiber
opticcableandprotectsthefiberopticcablefrommechanicaldamage.Stressreliefbootdesigns
aredifferentfor900umtight-bufferedfiberand1.6mm-3mmfiberopticcable.
FiberOpticConnectorTypes
Generallyspeaking,fibercableconnectortypescanbeclassifiedaccordingtofibermode,fiber
count,polish,utilizationandindustrial.
FiberMode:Single-ModeandMulti-modeFiberOpticConnectors
Single-mode(SM)fiberenablesonetypeoflightmodetobepropagatedatatime,while
multi-mode(MM)fibercanpropagatemultiplemodesatatime.
FiberCount:SimplexandDuplexFiberOpticConnectors
Asimplexfiberopticconnectorallowsdatatobetransmittedinonedirection,whileaduplexfiber
opticconnectorallowsdatatobesimultaneouslytransmittedinbothdirections.

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Polish:PC,UPCandAPCFiberOpticConnectors
PC(physicalcontact),UPC(UltraPhysicalContact),andAPC(AngledPhysicalConnect)referto
thepolishstylesoftheferrulesinsidethefiberopticconnectors.Thecolorcodeprovidesa
convenientmethodtoidentifythesethreetypesofconnectors:thePC'scolorcodeisblack,the
colorcodefortheAPCfiberconnectorisgreen,andtheUPC'sconnectorisblue.Thestructure
andtheperformanceofthethreefiberopticconnectorsalsovary,whichreflectsthevaluesof
insertionlossandreturnloss.
Utilization:LC,SC,MTP/MPO,ST,andFCFiberOpticConnectors
ALucentConnector(LC),asoneSFF(smallformfactor)connector,hasa1.25mmferrule.Square
Connector(SC)adoptsa2.5mmferrule,whichistwicethesizeofthepreviousLCconnector.
MTP/MPOconnectorisamulti-fiberconnectorandlargerthanotherconnectors,whichcombines
fibersfrom12to24fibersinasinglerectangularferrule.Straighttip(ST)connectorholdsthefiber
withaceramic,spring-loaded2.5mmferrulethatstaysinplacewithahalf-twistbayonetmount.

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Ferruleconnector(FC)usesaroundscrew-typefitmentmadefromnickel-platedorstainlesssteel.
TheFCconnectorendfacedependsonanalignmentkeyforcorrectinsertionandisthen
tightenedintotheadaptor/jackusingathreadedcollect.
Industrial:Q-RMCandNEX10FiberOpticConnectors
Rosenbergermultifiberconnector(Q-RMC)isdesignedwithametalcasingthatincorporatesa
quickinsertionmechanism,workswithoutanytools,andenablesquickconnectionorquick
disassemblyduringinstallationormaintenance.
RosenbergerNEX10connectorisdesignedforoutdoorharshenvironments,itischaracterizedby
acompactsizewaterproof,dust-proof,andanti-corrosion.Itsupportsscrewlockinganda
push-pulllockingmechanism.Thepush-pullquicklockhelpsinachievingsolidinstallationand
easyremovalwithoutanytools.

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Applications
Fiberopticconnectoriswidelyusedintelecommunications,datacenters,FTTxnetworks,local
areanetworks(LAN),metroareanetworks(MAN),CATV,CCTV,oil&gas,military&aerospace,
medicalapplication,railway,fiberopticpatchcord,Pigtail,FTTA,5G,etc.
Conclusion
Thedifferencesbetweentypesoffiberopticconnectorsareeasytobeneglectedincomplicated
fiberinstallments.However,takingthetimetoselecttherightonecandeliversubstantialbenefits,
whichsavesyoutimeandcost.SunTelecomsuppliesawidevarietyoffiberopticconnectors.
Contactusifyouhaveanyneeds.