1. Optical Fiber: Core Material:Polymety l - Methacrylate Resin Cladding Material:Fluorinated Polymer Core Refractive Index:1.49 Refractive Index Profile:Step Index Numerical Aperture:0.5 Core Diameter:Min.217μm;Typ.240μm;Max.263μm Cladding Diameter:Min.227μm;Typ.250μm;Max.273μm 2.Number of Fibers:10 3.Jacket Material:Polyethylene Color:Black Diameter: Min.1.20mm;Typ. 1.25mm;Max.1.30mm 4.Approximate Weight:1.3 g / m 5.Maximum Rating Storage Temperature:No Physical Deterioration [ in a Dry Atmosphere ] -55~+70℃ Operation Temperature:[ in a Dry Atmosphere ] -55~+70℃ Operation Temperature:[ under 95 %RH:condition ] +60℃ 6.Optical Properties Transmission Loss:[ 650 nm Collimated Light ] [ 25℃ 50%RH ] 650dB / km Transmission Loss:[ 650 nm Collimated Light ] [ Operation Temperature ] 700dB / km 7.Mechanical Characteristics Minimum Bend Radius:Loss Increment =< 0.5 dB [ A Quarter Bend ] 5mm Repeated Bending Endurance:Loss Increment =< 1 dB [ in Conformity to the JIS C 6861 ] Tensile Strength:[Tensile Force at 5% Elongation; [ in Conformity to the JIS C 6861 ] 27N Twisting Endurance:Loss Increment =< 1 dB [ Sample Length : 1 m Tensile Force : 4.9 N ] 5Time Impact Endurance:Loss Increment =< 1 dB [ in Conformity to the JIS C 6861 ]