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    Isbeddellada Horumarineed ee Tignoolajiyada Isgaadhsiinta Fiber Optical

    Waqtiga boostada: Jan-07-2020

    Isgaadhsiinta fibre-aragga, oo ah mid ka mid ah tiirarka ugu muhiimsan ee isgaarsiinta casriga ah, ayaa door muhiim ah ka ciyaara shabakadaha isgaarsiinta casriga ah.

    Isbeddelka horumarinta isgaadhsiinta fiber-ka indhaha ayaa laga filan karaa dhinacyada soo socda.

    1.Si loo xaqiijiyo kororka awoodda macluumaadka iyo gudbinta fogaanta fog, fiber-hal-mode ah oo leh khasaaro yar iyo kala firdhis hooseeya waa in la isticmaalaa. Waqtigan xaadirka ah, G.652 caadiga ah hal-mode fiber indhaha ayaa si weyn loogu isticmaalaa in shabakadaha isgaarsiinta khadadka cable indhaha. In kasta oo fiber-kani leeyahay khasaaraha ugu yar ee 1.55 μm, waxa uu leeyahay qiime weyn oo kala firidhsan oo ku saabsan 18 ps / (nm.km). Waxaa la sheegay in marka fibre-ga caadiga ah ee hal-hab ah loo isticmaalo mawjada dhererka 1.55 μm, waxqabadka gudbintu maaha mid ku habboon.

    Haddii hirarka fogaanta eber-ka-wareejinta laga beddelo 1.31 μm loona beddelo 1.55 μm, waxaa loo yaqaannaa fibre-soo-baxa (DSF), laakiin marka fiber-ka iyo erbium-doped fiber amplifier (EDFA) loo isticmaalo nidaamka isku-dhufashada mawjada dhererka (WDM) , waxa ay sabab u tahay in aan toosnayn ee fiber-ka, isku darka afarta-mawjadaha ah ayaa dhacaya, taas oo ka hortagaysa isticmaalka caadiga ah ee WDM, taas oo macnaheedu yahay in fidinta fiber-ka eber aysan u fiicnayn WDM.

    Si tignoolajiyada isgaarsiinta fiber optic-ga si guul leh loogu dabaqo nidaamka WDM, fidinta fiber-ka waa in la yareeyaa, laakiin looma ogola inay eber noqoto. Sidaa darteed, fiber-ka cusub ee hal-habka ah ee loogu talagalay waxaa loo yaqaan 'non-eber fibre fibre (NZDF), kaas oo u dhexeeya 1.54 ~ Qiimaha kala firdhinta ee kala duwanaanta 1.56μm waxaa lagu hayn karaa 1.0 ~ 4.0ps / (nm.km), taas oo ka fogaanaysa. meesha kala firdhiso eber, laakiin waxay ilaalisaa qiime yar oo kala firdhiso.

    Tusaalayaal badan ayaa si cad loo sheegay iyadoo la isticmaalayo NZDF's EDFA/WDM system gudbinta.

    2.Aaladaha sawir-qaadista ee loo isticmaalo hababka isgaarsiinta fiber optic-ga ayaa sidoo kale si weyn u horumaray sannadihii ugu dambeeyay. Si loo daboolo baahiyaha nidaamyada WDM, aaladaha isha iftiinka badan ee mowjadaha leh (MLS) ayaa la sameeyay sanadihii ugu dambeeyay. Waxay inta badan habaysaa tuubooyinka leysarka ee kala duwan waxayna ka dhigtaa qayb isku dhafan oo muuqaal ah oo leh lammaane xiddigle ah.

    Dhamaadka helitaanka nidaamka isgaarsiinta fiber indhaha, sawirqaadeheeda iyo horudhaciyaha waxaa inta badan loo horumariyaa jihada jawaabta xawaaraha sare ama ballaaran. PIN photodiodes wali waxay buuxin karaan shuruudaha hagaajinta ka dib. Sawir-qaadayaasha ballaadhan ee loo isticmaalo band 1.55μm-mawjada-dheer, bir semiconductor-metal photodetection tube (MSM) ayaa la sameeyay sanadihii ugu dambeeyay. Mawjada socota ayaa qaybisay sawirqaade. Sida laga soo xigtay warbixinnada, MSM-kan waxa uu ogaan karaa 78dB ee baaxadda inta jeer ee 3dB ee hirarka iftiinka 1.55μm.

    Hordhac FET waxay u badan tahay in lagu beddelo transistor-ka dhaqdhaqaaqa sare ee elektiroonigga ah (HEMT). Waxaa la soo wariyay in 1.55μm optoelectronic qaataha iyadoo la adeegsanayo qalabka baaraha MSM iyo habka HEMT ee horay loo sii xoojiyay is dhexgalka optoelectronic (OEIC) uu leeyahay xargaha soo noqnoqda ee 38GHz waxaana la filayaa inuu gaaro 60GHz.

    3. Nidaamka gudbinta dhibic-ilaa-dhibcaha ee PDH ee nidaamka isgaarsiinta fiber optic ayaa awoodi waayay inuu la qabsado horumarinta shabakadaha isgaarsiinta casriga ah. Sidaa darteed, horumarinta isgaadhsiinta fiber indhaha ee ku wajahan isku xidhka waxay noqotay isbeddel lama huraan ah.

    SDH waa dastuur cusub oo shabakada gudbinta ah oo leh sifooyinka aasaasiga ah ee isku xidhka. Waa shabakad xogeed oo dhamaystiran oo midaysa isku-dhufashada, gudbinta khadka iyo beddelka hawlaha waxayna leedahay awood maareyn shabakadeed oo xooggan. Hadda aad baa loo isticmaalaa.

     



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