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    Leqhubu la Leseli ke eng ka lintlha tse qaqileng [E hlalositsoe]

    Nako ea poso: Oct-13-2022

    Maqhubu a khanya ke mahlaseli a motlakase a hlahisoang ke lielektrone nakong ea ho sisinyeha ha athomo. Ho tsamaea ha lielektrone liathomong tsa lintho tse sa tšoaneng ho fapane, kahoo maqhubu a khanya ao li a ntšang le ’ona a fapane.

    Spectrum ke mohlala oa khanya ea monochromatic e arohanngoa ke mokhoa oa ho hasana (joaloka prism le grating) ka mor'a hore leseli la polychromatic le aroloe ke mokhoa oa ho hasana, o hlophisitsoeng ka ho latellana ho ea ka bolelele ba maqhubu (kapa maqhubu). E bitsoa optical spectrum ka botlalo.

    Ha re leka transmitter tosa, hangata re kenyelletsa parameter, SMSR (Side Mode Suppression Ratio). Karo-karolelano ea boleng bo phahameng ba matla a mokhoa o ka sehloohong ho matla a mokhoa oa lehlakoreng o bitsoa karo-karolelano ea khatello ea mokhoa oa lehlakoreng, e leng pontšo ea bohlokoa ea ts'ebetso ea mokhoa oa longitudinal. Ka kakaretso, ha u lekanya karo-karolelano ea ho hana mokhoa oa lehlakore, e hloka ho sebelisoa hammoho le letšoao le tlhahlobo ho spectral analyzer. Moetsi o sebelisetsoa ho khetholla tlhōrō ea maqhubu a bohareng le tlhōrō e phahameng ka ho fetisisa ea maqhubu a bobeli. Bala litlhōrō tse peli. Karolelano ea ho hana mokhoa oa lehlakore ke phapang ea boemo ba matla lipakeng tsa litlhoro tse peli. E ka baloa ka likhetho tse nyane ha ho hlahlojoa.

    E hlalosoa e le karo-karolelano ea matla a mantlha a longitudinal mode optical M1 le matla a lehlakoreng le felletseng la matla a M2 tlasa boemo ba ho feto-fetoha ka botlalo.

    Foromo ea lipalo ke:

    SMSR=10*lg(M1/M2)

    Ho transmitter ea optical, ka kakaretso ho hlalosoa hore SMSR e kholo ho feta 30dB; ke hore, matla a optical a mokhoa o ka sehloohong oa longitudinal ke makhetlo a fetang 1000 ho feta matla a optical side mode. Ha boleng ba SMSR bo phahame, tsela ea leseli e tsepamisitsoe haholoanyane. Joalokaha ho bontšitsoe setšoantšong se ka tlase: SMSR ke 51dB

     

    Leqhubu la Leseli ke eng ka lintlha

    E ka holimo ke tlhaloso ea tsebo ea Lightwave e tlisoang ke Shenzhen HDV Phoelectron Technology Co., Ltd., e leng moetsi oa puisano oa optical le ho hlahisa k'hamphani ea lihlahisoa tsa puisano. Rea u amohela ho etela ronaleqephe la sehlahisoa. Ke leboha ho bala sehlooho sena.

     



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