Cov cim qhia ntawm fiber ntau optical modules feem ntau suav nrog cov hauv qab no,
Tso zis Optical zog
Cov zis hluav taws xob kho qhov muag hais txog qhov tso zis hluav taws xob kho qhov muag ntawm lub teeb pom kev ntawm qhov kawg ntawm kev xa tawm ntawm fiber ntau optical module. Nws tuaj yeem nkag siab tias qhov kev siv ntawm lub teeb hauv W lossis mW lossis dBm. Ntawm lawv, W los yog mW yog linear unit, thiab dBm yog logarithmic unit. Hauv kev sib txuas lus, peb feem ntau siv dBm los sawv cev lub zog kho qhov muag.
Lub hwj chim kho qhov muag yog attenuated los ntawm ib nrab thiab txo los ntawm 3dB. Lub zog kho qhov muag ntawm 0dBm sib haum rau 1mW.
Kev txais siab tshaj plaws
Tau txais rhiab heev yog hais txog qhov tsawg kawg nkaus tau txais lub zog kho qhov muag ntawm fiber ntau optical module ntawm tus nqi thiab qhov yuam kev me ntsis, hauv dBm.
Feem ntau, tus nqi siab dua, qhov tsis zoo ntawm qhov tau txais rhiab heev, uas yog, qhov ntau dua qhov tsawg kawg nkaus tau txais lub zog kho qhov muag, thiab qhov siab dua qhov yuav tsum tau txais qhov kawg ntawm fiber ntau optical module.
Extinction Ratio
Qhov kev ploj tuag yog ib qho tseem ceeb tsis siv los ntsuas qhov zoo ntawm fiber ntau optical module.
Nws yog hais txog qhov tsawg kawg nkaus tus nqi ntawm qhov piv ntawm qhov nruab nrab kho qhov muag lub zog ntawm lub teeb liab mus rau qhov nruab nrab optical zog ntawm qhov chaw teeb liab nyob rau hauv cov xwm txheej ntawm tag nrho cov kev hloov kho, thiab sawv cev rau qhov txawv qhov txawv ntawm 0 thiab 1 cov cim. Ob yam uas cuam tshuam rau kev ploj tuag piv rau hauv fiber ntau optical module, kev tsis ncaj ncees tam sim no (kev tsis ncaj ncees) thiab kev hloov pauv tam sim no (Mod), raug suav hais tias yog ER=Bias / Mod.
Tus nqi ntawm qhov extinction ratio tsis yog qhov loj dua ntawm fiber ntau optical module, qhov zoo dua, tab sis fiber ntau optical module nrog qhov kev ploj tuag uas ua tau raws li 802.3 tus qauv.
Lub teeb Saturation
Kuj hu ua saturated optical zog, nws hais txog qhov siab tshaj plaws input optical zog thaum qee qhov kev ua yuam kev me ntsis (10-10-10-12) khaws cia ntawm qee qhov kis tau tus mob, hauv dBm.
Nws yuav tsum tau muab sau tseg tias photodetector yuav muaj photocurrent saturation nyob rau hauv lub teeb muaj zog irradiation. Thaum qhov tshwm sim no tshwm sim, tus ntes yuav tsum tau muaj lub sijhawm kom rov zoo. Nyob rau lub sijhawm no, qhov kev xav tau txo qis, thiab cov teeb liab tau txais yuav raug txiav txim tsis raug. Nws tuaj yeem ua rau me ntsis yuam kev, thiab nws kuj tseem yooj yim heev rau kev puas tsuaj rau qhov kawg ntes tau. Thaum lub sijhawm ua haujlwm, sim ua kom tsis txhob dhau nws lub zog kho qhov muag saturated.