Preform GI 50/125 - j-fiber

Multimode Preform 50/125CharacteristicsSpec. ValueUnitCore Composition SiO 2 /GeO 2Refractive Index Profilenearly parabolicRefractive Index Delta 13.7 x 10 -3Tolerance of Delta within a Rod 2.0 x 10 -3Numerical Aperture 0.200 ± 0.015Preform Diameter (O.D.) 39.0 mmTolerance of O.D. from Rod to Rod ± 2.0 mmTolerance of O.D. within a Rod ± 0.5 mmPreform Length 600 - 1200 mmPreform Bow ≤ 0.7 mm/mPreform Non-Circularity ≤ 1.0 %Clad Concentricity Error of O.D. ≤ 1.2 %DesignHandleEffective LengthTaperDropTotal LengthFor further information aboutour Multimode Preforms and otherj-fiber products and services,please contact us:j-fiber GmbHIm Semmicht 1D-07751 Jena, GermanyTel.: +49-3641-352 100Fax: +49-3641-352 101Email: info@j-fiber.comInternet: www.j-fiber.com• The drop end (Taper Drop) is formed as a cone and the “handle end” is a tube with the samediameter as the preform.O.D. handle = O.D. preformAppearanceThe general appearance shall be dustfree and flawless. There shall be no bubbles in the core.Bubbles in the cladding shall be permitted but the number and size(s) of the bubbles shallnot exceed the values stipulated in the table below. There shall be no substantial surfacedamage or contamination.Bubble Size s/mmIn the coreIn the cladding s ≤ 0.30.3 < s ≤ 0.80.8 < s ≤ 2.0s > 2.0Acceptable Number per Preformnot allowedno count520

Mass• Chargeable mass (m) is calculated with the formula:m[g] =2.2 x 3.14 x (outer diameter [cm]/2) 2 x (effective length [cm])2.2 = specific weight of SiO 2 [g/cm 3 ]• The “effective length” is the length of that part of the preformwhere every parameter is within stated preform specifications.Target Fiber SpecificationsSpecified Values UnitCore Diameter 50 ± 2.5 µmCore Non-Circularity ≤ 5.0 %Core/Clad Concentricity Error ≤ 1.5 µmCladding Diameter 125 ± 2.0 µmCladding Non-Circularity ≤ 1.0 %AttenuationBandwidth 1850nm1300nm1383nm850nm1300nm≤ 2.4≤ 0.6≤ 2.0≥ 500≥ 600dB/kmMHz•kmPackagingEvery preform is individually packaged as such to withstandnormal transportation hazards and handling.Each preform is identified by an ID number written on anadhesive label.Ordering InformationTo order j-fiber optical preform please call, fax or email us and specifythe following parameters:Preform Type: j-fiber Multimode Preform 50/125Preform Diameter:39.0mmPreform Quantity:kgOther:desired ship date, special requests1 A minimum of 70% of the fiber output is expected to meet the targetfiber specifications.Other band width combinations are available on request.j-fiber does not guarantee the following parameters as they aredependent upon individual draw conditions:• fiber yield• fiber strengthExpected Fiber LengthThe expected fiber length (L[km]) assuming a 100% drawingyield can be calculated using the following formula:L[km]={(d[mm]/0.125) 2 x e[mm]} x 10 -6Inspection DocumentsPreform IDMassEffective LengthLength of Drop Endd=preform diametere=effective lengthLength of Handle EndDiameter TypicalDiameter MaxThe inspection documents will be supplied with each shipment.The preform data can also be transmitted electronically andprecede each shipment (MS Windows, floppy disk, email etc.)All fibers and preforms are subject to j-fiber's ongoing process andquality improvement programs ensuring excellent performance andhigh reliability. We reserve the right to make changes to the abovespecification without notice.DB-PN-001-01-0607 Issued June 2007Copyright 2007 © j-fiber GmbHOfficially registered facility according to EWG No. 761/2001