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.1240μm;Typ.1300μm;Max.1320μm 2.Jacket Material and Color:Polyethylene , Black Diameter:Min.2.13mm;Typ. 2.20mm;Max.2.27mm Indication on the Jacket:SUPER ESKA ; Blue 3.Approximate Weight:4 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 in a Moist Atmosphere:[ under 95 %RH ] +60℃ 5.Optical Properties Transmission Loss:[ 650 nm Collimated Light ] 190dB / km Transmission Loss under 95 %RH:[ 650 nm Collimated Light ] 210dB / 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 ] 10,000Times Tensile Strength:[Tensile Force at 5?ì Elongation; in Conformity to the JIS C 6861 ] 30N 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