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    01
    OVD process：150mm G.652.D Fiber Optical Preform
    OVD process：150mm G.652.D Fiber Optical Preform

    OVD process：150mm G.652.D Fiber Optical Preform

      Nobis loquere

      Preform Specifications

      Preform Dimensiones

      Praeformatio dimensionis erit ut in Tabula 1.1 infra.

      Table 1.1 Preform Dimensiones

      Item Requisita Animadverte
      1 Mediocris Preform Diameter (OD) 135 ~ 160 mm (Note 1.1)
      2 Maximum Preform Diameter (ODmax) ≤ 160 mm
      3 Minimum Preform Diameter (ODmin) ≥ 130 mm
      4 Tolerantia OD (intra Preform) ≤ 20 mm.
      5 Preform Longitudo (including parte ansa) 2600 ~ 3600 mm (Note 1.2)
      6 Longitudo efficax ≥ 1800 mm
      7 lychnus longitudinis ≤ 250 mm
      8 Diametro ad finem cerei ≤ 30
      9 Preform Non circulationis ≤ 1%
      10 Concentricitas Error ≤ 0.5 μm
      11 Aspectus Nota 1.4 & 1.5.

      Nota 1.1: Proformatio diametri continue in parte recta cum 10 mm intervallo ab laser diametri mensurae ratione mensurabitur et ut mediocris valorum mensuratorum definiatur. Pars cerea definietur ut situs inter A ad B. Pars Recta definietur ut situs inter B ad C. A sit positio in fine praefationis. B est initium positio nucleum efficacem habens. C est finis positio efficax habens nucleum. D latere preform est finis.
      Nota 1.2: Preform Longitudo definietur ut in Figura 1.1.
      Nota 1.3: Pars efficax definitur ut situs inter B ad C.
      Crimen Longitudo = efficax Longitudo - -Unusable Longitudo ad defectus (LUD)

      Figura 1.1 Figura Preform

      OVD Process

      Nota 1.4: Bullae in regione externa (cf. figura 1.2) permittantur, secundum magnitudinem; numerus bullarum per unitatem volumen non excedat has stipulationes in Tabula 1.2 infra.

      Table 1.2 Bulla in Preform

      Location et magnitudine Bullarum

      Numerus / 1,000 cm3

      Core Regio (core + interior cladding)

      (Vide Nota 1.5)

      Exteriore Cladding Regio

      (Interface + exterioris cladding)

      ~ 0.5 mm

      Nullus Comes

      0.5 ~ 1.0 mm

      ≤ 10

      1.0 ~ 1.5 mm

      ≤ 2

      1.5 ~ 2.0 mm

      ≤ 1.0

      2.1 mm ~

      (Vide Nota 1.5)

      Figure 1.2 Cross-sectional View of a Preform

      OVD Process2

      Nota 1.5: Si defectus qui sunt, qui infra definiuntur, in regione media et/ vel in regione clausurae exterioris, area quae 3 mm ab utroque latere defectus tegit, pars inutilis definietur (Figura 1.3). Quo in casu, longitudo efficax definietur extra longitudinem inutiles partis. Inutilis pars indicabitur per "Defectum MAP", quae schedae inspectioni adnectitur.
      Vitia:
      1. bulla maior quam 2 mm in cladding exteriore;
      2. Botrus paucarum bullarum in cladding exteriore;
      3° bulla in clausura interiore seu nucleo;
      4. alienam substantiam in preform;

      Figure 1.2 Cross-sectional View of a Preform

      OVD Process3

      Crimen pondus

      Grave- bile pondus sic habe- tur;
      Pondus grave[g] -Total weight of preform－Not efficax pondus in parte cerei et manubrium. Defectus ponderis
      1. Pondus preform totalis est pondus armorum probatum.
      2. « Pondus efficax haud in parte cerei et in parte manubrium » est valor certus ab experientia determinatus.
      3. Defectus ponderis Volumen defectionis [cm3]) 2.2[g/cm3]; "2.2[g/cm3]" est vicus densitas vitri.
      4. "Volumus defectionis" (OD[mm]/2) 2 Σ(LUD)×π; LUD = Inutilis Longitudo defectus=Defectus Longitudo+ 6[mm].
      5. Diameter informis mensurabitur continue in parte recta cum 10 mm intervallo ab Laser Diametri Mensurae System.

      Scopum Fiber Characteres

      Cum condiciones ductae et condiciones mensurationis optimae et stabiles sint, praeparationes exspectandae sunt ut fibra specificationum scopo occurrat, ut in Tabula 2.1.

      Mensa 2.1 Target Fibre Characteres

       

      Item

      Requisita

       

      1

      Attenuation at 1310 nm

      ≤ 0.34 dB/km

       

      Attentio ad 1383 nm

      ≤ 0.34 dB/km

      (Note 2.1)

      Attenuation at 1550 nm

      ≤ 0.20 dB/km

       

      Attenuation at 1625 nm

      ≤ 0.23 dB/km

       

      Uniformitas Attenuation

      ≤ 0.05 dB/km ad 1310&1550 nm

       

      2

      Modus Field Diameter ad 1310 nm

      9.1± 0.4 µm

       

      3

      Cable Cutoff Necem (λcc)

      ≤ 1260 nm

       

      4

      Nulla dispersio Necem (λ0)

      1300 ~ 1324 nm

       

      5

      Dispersio apud 1285~1340 nm

      -3.8 ~ 3.5 ps/(nm·km)

       

      6

      Dispositio 1550 nm

      13.3 ~ 18.6 ps/(nm·km)

       

      7

      Dispositio 1625 nm

      17.2 ~ 23.7 ps/(nm·km)

       

      8

      Dispersio Clivo ad λ0

      0.093 ~ 0.092 ps/(nm2·km)

       

      9

      Core Concentricitas Error

      ≤ 0.6 µm

      		  

      Nota 2.1: Attenuatio ad 1383 um post hydrogenii experimentum senescit, in Tabula 2.1 non comprehenditur quia valde pendet a conditionibus extractionis fibra.