光无源器件的可靠性估计报告，Telcordia SR-332

按照TelcordiaSR-332编制的光无源器件的可靠性估计报告，使用BlackBox+FieldData方法，求大神点评！

[quote]RELIABILITYPREDICTIONREPORT
FORWAVELENGTHCOUPLER/SPLITTER-FUSEDFIBER
1.SCOPE
Thisreliabilityreportprovidespredictedfailurerateestimatesfortheofthe1x2980/1550nmMiniatureFFWDMmanufacturedbyAdvancedFiberResourcesInc.
ThereliabilitypredictionwasperformedaccordingtoReliabilityPredictionProcedureforElectronicEquipment,TelcordiaTechnologiesSpecialReport,SR-332,Issue2,September2006.
2.DEFINITION
FailureinTime(FIT)–Probabilitythatacomponentfailsinanyonesteadystatehour;aFITisafailureunitequivalenttothenumberoffailuresperbillionoperatinghours.
3.ANALYSISCONSIDERATIONS
Generally,variousfactors,suchaspartapplication,environment,temperature,humidity,vibration,shock,powerlevels,cyclerates,constructioncharacteristics,etc.,allaffectthereliabilityofanopticalpassivedevice.So,devicefailureratesvaryasafunctionofoperatingconditionsandproductionquality.BelowfactorsareconsidereddescribedinSR-332.
•OperatingTemperature.ThevalueforthisfactorisfoundinSR-332Section9.1basedonthetemperatureandthetypeofdevice.
•ElectricalStress.ThevaluesforthisfactorarefoundinSR-332Section9.2basedonstressandthetypeofdevice.Ifthestressisunknown,theRPPassumesstressis50%,whichproducesafactorvalueof1foralldevicetypes.
•Quality.SR-332Section9.3providesdescriptionsoftheseQualityLevelsasanaidinclassifyingsupplierqualityefforts.
•EnvironmentalCondition.TheRPPdefinesfiveenvironmentalconditionsinSR-332Section9.4.[/quote]