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.920μm;Typ.980μm;Max.1040μm Cladding Diameter:Min.940μm;Typ.1000μm;Max.1060μm 2.Jacket Material and Color:Chlorinated Polyethylene, Black Diameter: Min.2.13mm;Typ. 2.20mm;Max.2.27mm Indication on the Jacket:ESKA PREMIER ; Pink 3.Approximate Weight:6 g / m ? 4.Maximum Rating Storage Temperature:No Physical Deterioration -55~+85℃ Operation Temperature:-55~+85℃ Operation Temperature under 95 %RH: +75℃ 5.Optical Properties Transmission Loss:[ 650 nm Collimated Light ] 170dB / km Transmission Loss under 95 %RH:190dB / km 6.Mechanical Characteristics Minimum Bend Radius:Loss Increment =< 0.5 dB [ A Quarter Bend ] 25mm Repeated Bending Endurance:Loss Increment =< 1 dB [ in Conformity to the JIS C 6861 ] 5,000Times Tensile Strength:[Tensile Force at 5% Elongation; in Conformity to the JIS C 6861 ] 70N Twisting Endurance:Loss Increment =< 1 dB [ Sample Length : 1 m Tensile Force : 4.9 N ] 5Times Impact Endurance:Loss Increment =< 1 dB [ in Conformity to the JIS C 6861 ] 0.4N.m