1.Laser qeb
Lub laser yog qhov tseem ceeb tshaj plaws ntawm cov khoom siv kho qhov muag uas txhaj tam sim no rau hauv cov khoom siv semiconductor thiab tawm lub teeb laser los ntawm photon oscillations thiab nce hauv kab noj hniav. Tam sim no, feem ntau siv lasers yog FP thiab DFB lasers. Qhov txawv yog tias cov khoom siv semiconductor thiab cov kab noj hniav sib txawv. Tus nqi ntawm DFB laser yog kim dua li FP laser. Optical modules nrog kev sib kis mus txog 40KM feem ntau siv FP lasers; optical modules nrog kis nrug ≥40KM feem ntau siv DFB lasers.
2. Poob thiab dispersion
Poob yog qhov poob ntawm lub teeb lub zog vim qhov nqus thiab tawg ntawm qhov nruab nrab thiab qhov xau ntawm lub teeb thaum lub teeb xa mus rau hauv fiber ntau. Qhov no ntawm lub zog yog dissipated ntawm ib tug npaum li cas raws li qhov kev ncua deb nce.Qhov dispersion feem ntau yog tshwm sim los ntawm qhov sib npaug ceev ntawm electromagnetic nthwv dej ntawm txawv wavelengths propagating nyob rau hauv tib qhov nruab nrab, uas ua rau sib txawv wavelength Cheebtsam ntawm lub kho qhov muag teeb liab mus txog rau. tau txais qhov kawg ntawm lub sijhawm sib txawv vim yog qhov sib txuam ntawm qhov sib kis ntawm qhov deb, ua rau cov mem tes dav dav thiab yog li tsis muaj peev xwm paub qhov txawv ntawm cov teeb liab muaj nuj nqis.Cov ob qhov no feem ntau cuam tshuam rau kev sib kis ntawm qhov muag module. Hauv cov txheej txheem kev thov tiag tiag, 1310nm optical module feem ntau suav qhov txuas poob ntawm 0.35dBm / km, thiab 1550nm optical module feem ntau suav qhov txuas poob ntawm .20dBm / km, thiab suav cov nqi dispersion. Yooj yim heev, feem ntau tsuas yog siv rau kev siv.
3.Kev xa hluav taws xob kho qhov muag thiab tau txais rhiab heev
Lub zog xa hluav taws xob xa mus yog hais txog qhov tso zis hluav taws xob kho qhov muag ntawm lub teeb pom kev ntawm qhov kawg ntawm qhov khoom siv kho qhov muag. Qhov tau txais rhiab heev yog hais txog qhov tsawg kawg nkaus tau txais lub zog kho qhov muag ntawm qhov kho qhov muag module ntawm tus nqi thiab qhov yuam kev me ntsis. Cov chav nyob ntawm ob qhov ntsuas no yog dBm (lub ntsiab lus decibel milliwatt, lub logarithm ntawm lub hwj chim unit mw, cov qauv kev suav yog 10lg, 1mw hloov mus rau 0dBm), uas yog siv los txheeb xyuas qhov sib kis ntawm cov khoom, sib txawv wavelengths, Kev sib kis tus nqi thiab Cov khoom siv kho qhov muag optical transmitter lub zog thiab tau txais rhiab heev yuav txawv, ntev npaum li qhov kev sib kis tau zoo tuaj yeem ua kom ntseeg tau.
4.Optical module lub neej
Cov qauv kev sib koom ua ke thoob ntiaj teb, 50,000 teev ua haujlwm tas li, 50,000 teev (sib npaug rau 5 xyoos).
SFP optical modules yog tag nrho cov LC interfaces. GBIC optical modules yog tag nrho SC interfaces. Lwm qhov sib cuam tshuam suav nrog FC thiab ST.