OSNR yog qhov piv ntawm lub teeb liab lub zog rau lub suab nrov lub zog ntawm qhov kho qhov muag channel tom qab dhau los ntawm lub network kho qhov muag. Nws muab kev kwv yees ntawm qhov phem npaum li cas lub suab nrov tau cuam tshuam rau lub teeb liab lub zog. Qhov siab dua OSNR, qhov zoo dua yog rau tag nrho cov kab ke.
Cov qauv dav dav rau kev suav OSNR yog:
OSNR=10*log(S/N)
Qhov twg yog lub teeb liab fais fab thiab N yog lub suab nrov, ob qho tib si qhia hauv watts lossis milliwatts.
OSNR qhov tseem ceeb yog qhov tseem ceeb tshaj plaws ntawm tus neeg txais vim tias tus nqi qis OSNR txhais tau hais tias lub teeb liab yuav tsis raug ntes los ntawm tus txais. Feem ntau, OSNR yuav tsum siab dua 15 dB mus rau 18 dB ntawm lub receiver, tab sis tus nqi no yuav nyob ntawm ntau yam xws li cov ntaub ntawv tus nqi, yuav tsum tau BER thiab lwm yam. OSNR kev ntsuas yog txhais hauv IEC 61282-12 / b-IEC { {4}} qauv.
1. OSNR [dB] yog qhov ntsuas qhov sib piv ntawm lub teeb liab lub zog rau lub suab nrov lub zog hauv qhov chaw kho qhov muag.
2. Nws yog qhov tseem ceeb parameter rau kwv yees kev ua tau zoo ntawm Optical Networks. Nws pab hauv BER suav ntawm Optical System.
3. OSNR yog ib qho tseem ceeb vim hais tias nws qhia txog qhov kev puas tsuaj thaum lub teeb liab kho qhov muag nqa los ntawm lub tshuab xa hluav taws xob uas muaj cov khoom siv kho qhov muag.
4. Yog tias peb paub OSNR thiab cov bandwidths, peb tuaj yeem nrhiav Q thiab BER Nws tuaj yeem pom raws li QoS ntawm lub cev txheej ntawm optical network. OSNR yog ncaj qha ntsig txog tus nqi me ntsis yuam kev, uas yuav ua rau cov pob ntawv poob pom los ntawm cov txheej txheem siab dua.
5. OSNR cuam tshuam ncaj qha rau BER thiab tuaj yeem muab lus ceeb toom ntawm qhov muaj peev xwm BER deterioration.
6. OSNR tau ntev tau lees paub tias yog ib qho tseem ceeb ntawm kev ua tau zoo rau kev ua kom muaj zog sib kis tau zoo los xyuas kom meej lub network kev ua tau zoo thiab kev ntseeg tau thiab nws muaj feem xyuam rau ntau qhov kev tsim qauv xws li tus lej lossis rov ua haujlwm / amplifiers, ncav cuag, muaj cov qauv hloov kho thiab lwm yam.
OSNR tseem ceeb heev hauv DWDM system. HTF pab neeg tuaj yeem pab txhawb koj los tsim cov kev daws teeb meem dwdm.
