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    01
    Inqubo ye-OVD: 185mm G.657.A1 I-Optical Fiber Preform
    Inqubo ye-OVD: 185mm G.657.A1 I-Optical Fiber Preform

    Inqubo ye-OVD: 185mm G.657.A1 I-Optical Fiber Preform

      Xhumana nathi

      Imininingwane ye-Preform

      Ubukhulu be-Preform

      Ubukhulu be-preform buyoba njengakuThebula 1.1 ngezansi.

      Ithebula 1.1 Ubukhulu be-Preform

      Into Izimfuneko Phawula
      1 I-Average Preform Diameter (OD) 135 ~ 160 mm (Qaphela 1.1)
      2 I-Maximum Preform Diameter (ODmax) ≤ 160 mm
      3 Ubuncane be-Preform Diameter (ODmin) ≥ 130 mm
      4 Ukubekezelela i-OD (ngaphakathi kwe-Preform) ≤ 20 mm ( engxenyeni eqondile)
      5 Ubude be-Preform (kufaka phakathi ingxenye yesibambo) 2600 ~ 3600 mm (Qaphela 1.2)
      6 Ubude obusebenzayo ≥ 1800 mm
      7 Ubude be-taper ≤ 250 mm
      8 Ububanzi ekugcineni kwe-taper ≤ 30
      9 I-Preform Non-circularity ≤ 1 %
      10 Iphutha Le-Concentricity ≤ 0.5 μm
      11 Ukubukeka (Qaphela 1.4&1.5)

      Qaphela 1.1: I-diameter ye-preform izokalwa ngokuqhubekayo engxenyeni eqondile ngesikhawu esingu-10mm ngoHlelo Lokulinganisa Ububanzi Be-Laser futhi lichazwe njengesilinganiso samanani akalwayo. Ingxenye ye-taper izochazwa njengendawo ephakathi kuka-A kuya ku-B. Ingxenye Eqondile izochazwa ngokuthi indawo ephakathi kuka-B kuya ku-C. A yindawo ekupheleni kwe-preform. B indawo yokuqala enomongo osebenzayo. C indawo yokugcina enomongo osebenzayo. I-D iyingxenye yokugcina ye-preform.
      Qaphela 1.2: “Ubude be-Preform” buzochazwa njengoba kuboniswe kuMfanekiso 1.1.
      Qaphela 1.3: Ingxenye Esebenzayo izochazwa njengendawo phakathi kuka-B kuya ku-C.
      Ubude Obukhokhiswayo = Ubude Obusebenzayo - ∑Ubude Obungasebenziseki Ekubi (LUD)

      Umfanekiso 1.1 Ukuma kwe-Preform

      Inqubo ye-OVD

      Qaphela 1.4: Amabhamuza endaweni yokugqoka yangaphandle (bheka Umfanekiso 1.2) azovunyelwa, kuye ngosayizi; inani lamabhamuza ngeyunithi ngayinye akufanele lidlule lezi ezishiwo kuThebula 1.2 ngezansi.

      Ithebula 1.2 Ibhamuza ku-Preform

      Indawo kanye nosayizi weBubble

      Inombolo / 1,000 cm3

      Isifunda Esiwumgogodla (=umgogodla + ukuvala kwangaphakathi)

      (Bheka Inothi 1.5)

      Isifunda Sokugquma Kwangaphandle

      (=isixhumi esibonakalayo + ukuvala kwangaphandle)

      ~ 0.5 mm

      Akukho Ukubala

      0.5 ~ 1.0 mm

      ≤ 10

      1.0 ~ 1.5 mm

      ≤2

      1.5 ~ 2.0 mm

      ≤ 1.0

      2.1 mm ~

      (Bheka Inothi 1.5)

      Umfanekiso 1.2 Ukubuka Okuphambanayo kwe-Preform

      Inqubo ye-OVD2

      Qaphela 1.5: Uma kukhona noma yimaphi amaphutha, achazwe ngezansi, endaweni ewumgogodla kanye/noma isifunda sokumboza sangaphandle, indawo ehlanganisa u-3 mm ukusuka ohlangothini ngalunye lwesici izochazwa njengengxenye engasebenziseki (Umfanekiso 1.3). Kulesi simo, ubude obusebenzayo buzochazwa ngaphandle kobude bengxenye engasebenziseki. Ingxenye engasebenziseki izokhonjiswa ngokuthi “Defect MAP”, ezonamathiselwa eshidini lokuhlola.
      Amaphutha:
      1. ibhamuza elikhulu kuno-2 mm endaweni engaphandle,
      2. iqoqo lamabhamuza ambalwa endaweni engaphandle,
      3. ibhamuza ekuhlanganisweni kwangaphakathi noma umongo,
      4. into yangaphandle ku-preform,

      Umfanekiso 1.2 Ukubuka Okuphambanayo kwe-Preform

      Inqubo ye-OVD3

      Isisindo Esikhokhiswayo

      Isisindo esikhokhiswayo sizobalwa ngale ndlela elandelayo;
      Isisindo esikhokhiswayo[g] ＝Isisindo esiphelele se-preform－Asikho isisindo esisebenzayo engxenyeni ecijile nengxenye yesibambo－Isisindo esinesici
      1. Isisindo esiphelele se-preform isisindo esihlolwe imishini.
      2. “Isisindo esingasebenzi kahle engxenyeni ye-taper nengxenye yesibambo” inani elingashintshi elinqunywa ulwazi.
      3. Isisindo esinephutha ＝ Ivolumu yengxenye Yesici[cm3]) × 2.2[g/cm3]; “2.2[g/cm3]” ukuminyana kwengilazi yequartz.
      4. “Umthamo Wengxenye Yesici” ＝ (OD[mm]/2)2 ×Σ(LUD)×π; I-LUD =Ubude obungasebenziseki endaweni eyisici=Ubude Besici+ 6[mm].
      5. I-diameter ye-preform kufanele ikalwe ngokuqhubekayo engxenyeni eqondile ngo-10mm isikhawu ngoHlelo Lokukala Ububanzi Be-Laser.

      I-Target Fiber Characters

      Lapho izimo zokudweba nezimo zokulinganisa zizinhle kakhulu futhi zizinzile, ama-preforms azolindeleka ukuthi ahlangabezane nezicaciso zefayibha eziqondiwe njengoba kukhonjisiwe kuThebula 2.1.

      Ithebula 2.1 I-Target Fiber Characters

      Into

      Izimfuneko

      1

      Attenuation at 1310 nm

      ≤ 0.35 dB/km

      Attenuation at 1383 nm

      ≤ 0.35 dB/km

      (Qaphela 2.1)

      Attenuation at 1550 nm

      ≤ 0.21 dB/km

      Attenuation at 1625 nm

      ≤ 0.23 dB/km

      Uniformity of Attenuation

      ≤ 0.05 dB/km ku-1310&1550 nm

      2

      I-Mode Field Diameter ku-1310 nm

      9.0 ± 0.4 µm

      3

      I-Cable Cutoff Wavelength (λcc)

      ≤ 1260 nm

      4

      I-Zero Dispersion Wavelength (λ0)

      1300 ~ 1324 nm

      5

      Ukusabalalisa ku-1285 ~ 1340 nm

      -3.8 ~ 3.5 ps/(nm·km)

      6

      I-Dispersion 1550 nm

      13.3 ~ 18.6 ps/(nm·km)

      7

      I-Dispersion 1625 nm

      17.2 ~ 23.7 ps/(nm·km)

      8

      I-Dispersion Slope ku-λ0

      0.073 ~0.092 ps/(nm2·km)

      9

      Iphutha le-Core/Cladding Concentricity

      ≤ 0.5 µm

      10

      Ukulahlekelwa Okubangelwa Ukugoba Okukhulu

      (Qaphela 2.2)

      30mm ububanzi, 10turns, ku-1550nm

      ≤ 0.25 dB

      30mm ububanzi, 10turns, ku-1625nm

      ≤ 1.0 dB

      20mm ububanzi, 1turn, ku-1550nm

      ≤ 0.75 dB

      20mm ububanzi, 1turn, ku-1625nm

      ≤ 1.5 dB


      Qaphela 2.1: Ukuncishiswa ku-1383 nm ngemva kokuhlolwa kokuguga kwe-hydrogen akumele kufakwe kuThebula 2.1 ngoba kuncike kakhulu ezimeni zokudweba ifayibha.

      Qaphela 2.2: Ukuqinisekisa isilinganiso sokuphumayo se-G.657.A1 ifayibha, izimo zokudweba kufanele zilawulwe ngokuphumelelayo ukuze kwenziwe i-wavelength ye-fiber cut-off ibe ngaphezu kuka-1270 nm. Ubude begagasi bokunqamuka kwekhebula kufanele buhlolwe lapho i-fiber cutoff wavelength inkulu kuno-1300nm.