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.Jacket Material:Polyethylene Color:Black Diameter: Min.0.95mm;Typ. 1.00mm;Max.1.05mm 3.Approximate Weight:0.7 g / m 4.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℃ 5.Optical Properties Transmission Loss:[ 650 nm Collimated Light ] [ 25℃ 50%RH ] 400dB / km Transmission Loss:[ 650 nm Collimated Light ] [ Operation Temperature ] 420dB / km 6.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 ] 4N Twisting Endurance:Loss Increment =< 1 dB [ Sample Length : 1 m Tensile Force : 4.9 N ] Impact Endurance:Loss Increment =< 1 dB [ in Conformity to the JIS C 6861 ]