Ngemva kokufakwa kwe-module optical, ukuhlola ukusebenza kwayo kuyisinyathelo esibalulekile.Lapho izingxenye ze-optical kuwo wonke uhlelo lwenethiwekhi zinikezwa umthengisi ofanayo, uma uhlelo lwenethiwekhi lungasebenza ngokujwayelekile, asikho isidingo sokuhlola ngokwehlukana izingxenye ezingaphansi. yohlelo.Nokho, iningi lezingxenye ezincane ezinhlelweni eziningi zenethiwekhi zivela kubathengisi abahlukene.Ngakho-ke, ukuhlola izingxenye ze-optical, ikakhulukazi ukusebenza nokusebenzisana kwemojula ngayinye yokubona kubalulekile.Ngakho-ke ukuhlola kanjani ukusebenza kwemojuli ye-optical?
Imojula ye-optical yakhiwa umthumeli kanye nomamukeli.Lapho umthumeli uxhunywe kumamukeli nge-fiber optical, uma izinga lephutha lalo lonke uhlelo lingaphumeleli umphumela olindelekile, ingabe inkinga yokudlulisela noma inkinga yomamukeli?Imojula yokubona yokuhlola ngokuvamile ihlukaniswa ngezinyathelo ezine, ezihlukaniswa kakhulu zibe izivivinyo zesidlulisi kanye nomamukeli.
Ukuhlolwa kwe-Transmitter
Lapho uhlola, udinga ukunaka ubude beza kanye nokuma kwe-waveform ye-transmitter output, kanye nokubekezelela i-jitter kanye nomkhawulokudonsa womamukeli.Lapho uhlola isidluliseli, udinga ukunaka amaphuzu amabili alandelayo: Okokuqala:Ikhwalithi yesiginali yokufaka esetshenziselwa ukuhlola isidluliseli kumele ibe yinhle ngokwanele.Ngaphezu kwalokho, ikhwalithi yezilinganiso zikagesi kumele iqinisekiswe izilinganiso ze-jitter kanye izilinganiso zomdwebo weso.Izilinganiso zomdwebo weso ziyindlela evamile yokuhlola i-waveform ephumayo ye-transmitter ngoba umdwebo wamehlo uqukethe ingcebo yolwazi olubonisa ukusebenza okuphelele komthumeli.
Okwesibili: Isiginali ye-optical okukhiphayo yesidluliseli kumele ikalwe ngezinkomba zekhwalithi yokubona njengokuhlolwa komdwebo wamehlo, i-optical modulation amplitude kanye ne-extinction ratio.
Ukuhlola umamukeli
Lapho uhlola umamukeli, udinga futhi ukunaka amaphuzu amabili alandelayo:
Okokuqala:Ngokungafani nesidlulisi sokuhlola, ikhwalithi yesiginali yokubona kufanele ibe mbi ngokwanele lapho kuhlolwa umamukeli.Ngakho-ke, umdwebo weso lokucindezela ukukhanya omele isignali embi kakhulu kufanele udalwe.Lesi siginali ye-optical embi kakhulu kufanele idlule i-jitter.Izivivinyo zokulinganisa namandla okubona zisetshenziselwa ukulinganisa.
Okwesibili:Ekugcineni, udinga ukuhlola isignali ephumayo kagesi yomamukeli.Kunezinhlobo ezintathu eziyinhloko zokuhlola:
Ukuhlolwa komdwebo wamehlo: Lokhu kuqinisekisa ukuthi “amehlo” omdwebo wamehlo avuliwe.Ukuhlolwa komdwebo wamehlo ngokuvamile kufinyelelwa ngokujula kwesilinganiso sephutha elincane
Ukuhlolwa kwe-Jitter: hlola izinhlobo ezihlukene zamajita
Ukulandelela i-Jitter nokubekezelela: Hlola ukulandelelwa kwe-jitter ngesekhethi yangaphakathi yokutakula iwashi
Imojula yokuhlola ukukhanya iwumsebenzi oyinkimbinkimbi, kodwa futhi iyisinyathelo esibalulekile sokuqinisekisa ukusebenza kwayo.Njengendlela yokulinganisa esetshenziswa kabanzi, ukukalwa komdwebo wamehlo kungavivinya ngempumelelo i-emitter yemojula yokubona.Ukuhlola umamukeli wemojula yokubona kuyinkimbinkimbi kakhulu futhi kudinga izindlela zokuhlola ezengeziwe.