TECHNICAL SPECIFICATION

Transcription

1 ISSUED : OCT. 02, 2006 PAGE : 1 OF 9 REV. : 1 TECHNICAL SPECIFICATION FOR GST A LOOSE TUBE DRY CORE CABLE SINGLE JACKET/SINGLE ARMOR (SJSA CABLE) Prepared By : Oh-Heoung Kwon Engineer Optical Technical Team Checked By : Jae-Young Choi Engineer Optical Technical Team Approved By : Euy-Don Park Senior Manager Optical Technical Team

2 1. SCOPE 1.1 Application This specification covers the general requirements for fiber optic telecommunication cables used for aerial, duct or direct buried applications 1.2 Cable Description 1) Single Jacket/Single Armor Single mode color coded fibers, filled color coded loose tubes, PE filler (if required), SZ-stranded around the dielectric central strength member, water swellable tape, outer strength member, water swellable tape, ripcords, corrugated steel tape armor and outer PE jacket 2. OPTICAL FIBER 1) Manufacturing process: MCVD 2) Fiber type: Matched clad fiber 3) The optical, geometrical, mechanical and environmental performance of optical fiber shall be in accordance with Table 1 and 2 below. Table 1. The Optical and Geometrical Performance of Single Mode Fiber Attenuation Chromatic Dispersion ITEMS UNITS SPECIFICATION db/km ps/nm.km 0.35 at 1310nm 0.21 at 1550nm 3.2 at 1285nm ~ 1330nm 18 at 1550nm Zero Dispersion Wavelength nm 1300 ~ 1320 Zero Dispersion Slope ps/nm 2.km Polarization Mode Dispersion ps/ km 0.5 Cut-off Wavelength ( ºcc, 22m of a cabled fiber) nm 1260 Point Discontinuity db 0.10 at 1310nm & 1550nm Attenuation at Water Peak db/km 1.5 at 1383nm Attenuation vs. Wavelength db/km 0.05 at 1285 ~ 1330nm (Ref. º 1310nm) 0.05 at 1525 ~ 1575nm (Ref. º 1550nm) PAGE 2 OF 9

3 Table 1. The Optical and Geometrical Performance of Single Mode Fiber (continued) ITEMS UNITS SPECIFICATION Attenuation vs. Bending (60mm x 100turns) db 0.10 at 1550nm Mode Field Diameter at 1310nm at 1550nm Core-Clad Concentricity 0.6 Cladding Diameter Cladding Non-circularity % 1.0 Coating Diameter Fiber Curl m 2 Table 2. The Mechanical and Environmental Performance of Single Mode Fiber ITEMS UNITS SPECIFICATION Proof Test kpsi ˆ100 Temperature Cycling (-60 to +85 ) Temperature Humidity Cycling (-10 to +85, up to 98% RH) db/km db/km 0.05 at 1310nm & 1550nm 0.05 at 1310nm & 1550nm Water Immersion, 23 db/km 0.05 at 1310nm & 1550nm Heat Aging, 85 db/km 0.05 at 1310nm & 1550nm 3. CABLE CONSTRUCTION The construction of the cable shall be in accordance with Table 3 below. Table 3. Construction of the Cable ITEMS DESCRIPTION Number of Fibers 2 ~ 288 Type of Fiber Single Mode No. of Fibers per Tube Max. 12 Loose Buffer Material PBT (Polybutylene Terephthalate) Tube Diameter Nom. 2.4mm PAGE 3 OF 9

4 Table 3. Construction of the Cable (continued) ITEMS Filling Compound in Loose Buffer Tube Water Blocking Material Central Strength Member Over-Coat of CSM Core Wrapping Tape Outer Strength Member Water Blocking Material Rip Cord Armor Outer Jacket DESCRIPTION Thixotropic Jelly Compound Water Swellable Tape or Yarn around the CSM (To prevent the ingress of water) FRP (Fiberglass Reinforced Plastic) Black Polyethylene (If necessary to make good core configuration) Water Swellable Tape (To prevent the ingress of water) Glass yarns or Aramid yarns (To provide the required tensile strength together with the central strength member) Water Swellable Tape (To prevent the ingress of water) Two ripcords (To provide easy cable entry, approximately 180 separation) Corrugated Steel Tape with Plastic Coating on Both Sides Thickness : Nom. 0.15mm (Steel Tape) Nom. 0.05mm (Plastic Coating) Material : Black MDPE Thickness : Min. 1.25mm, Nom. 1.8mm 4. FIBER AND LOOSE BUFFER TUBE IDENTIFICATION The color code of the loose buffer tubes and the individual fibers within each loose buffer tube shall be in accordance with Table 4 and 5 below. Color of loose buffer tube may be changed in accordance with mutual agreement. Table 4. The Color Code of the Individual Fibers No. of Fibers Color No. of Fibers Color 1 Blue 7 Red 2 Orange 8 Black 3 Green 9 Yellow 4 Brown 10 Violet 5 Slate 11 Rose 6 White 12 Aqua PAGE 4 OF 9

5 Table 5. The Color Code of the Loose Buffer Tubes No. of Loose No. of Loose Color Buffer Tubes Buffer Tubes Color 1 Blue 13 Blue with Black Tracer 2 Orange 14 Orange with Black Tracer 3 Green 15 Green with Black Tracer 4 Brown 16 Brown with Black Tracer 5 Slate 17 Slate with Black Tracer 6 White 18 White with Black Tracer 7 Red 19 Red with Black Tracer 8 Black 20 Black with White Tracer 9 Yellow 21 Yellow with Black Tracer 10 Violet 22 Violet with Black Tracer 11 Rose 23 Rose with Black Tracer 12 Aqua 24 Aqua with Black Tracer 5. PHYSICAL / MECHANICAL / ENVIRONMENTAL PERFORMANCE AND TESTS The mechanical and environmental performance of the cable shall be in accordance with Table 6 below. Unless otherwise specified, all attenuation measurements required in this section shall be performed at 1550nm. Table 6. The Mechanical and Environmental Performance of the Cable ITEMS Tensile Loading And Bending Test TEST METHOD AND ACCEPTANCE CRITERIA # Test method: TIA/EIA A -. Mandrel diameter: 30D (D = cable diameter) -. Short term tensile load: 2,700N for 1 hour -. Long term tensile load: 1,000N for 10 minutes -. Fiber strain: Less than 60% of the fiber proof strain for short term tensile load -. Attenuation increment: 0.10 db for long term tensile load PAGE 5 OF 9

6 Table 6. The Mechanical and Environmental Performance of the Cable (continued) ITEMS Compressive Loading Resistance Test TEST METHOD AND ACCEPTANCE CRITERIA # Test method: TIA/EIA A -. Applied load: 220 N/cm -. Duration of loading: 10 minutes -. Attenuation Increment: 0.10 db Repeated Impact Test Cyclic Flexing Test Cable Twist Test Temperature Cycling Test Water Penetration Test # Test method: TIA/EIA B -. Height of impact: 150mm -. No. of impact cycles: 25 cycles -. Attenuation Increment: 0.10 db -. No jacket cracking and fiber breakage # Test method: TIA/EIA A -. Sheave diameter: 20D (D = cable diameter) -. No. of flexing cycles: 25 cycles -. Flexing speed: 30 cycles/minute -. Attenuation Increment: 0.10 db -. No jacket cracking and fiber breakage # Test method: TIA/EIA A -. Cable length twisted: 2m -. No. of twist cycles: 10 cycles -. Twist angle: Attenuation Increment: 0.10 db -. No jacket cracking and fiber breakage # Test method: TIA/EIA-455-3A -. Temperature cycling schedule : Soak time at each temperature: 24hours -. Attenuation increment: 0.10 db/km # Test method: TIA/EIA B -. Length of specimen: 1m -. Height of pressure head: 1m -. Test time: 24 hours -. No leakage through the open cable end PAGE 6 OF 9

7 6. PACKING AND MARKING 6.1 Cable Marking The jacket shall be marked at intervals of two feet with following information. 1) Purchaser s name 2) Cable type and fiber number 3) Name of the manufacturer 4) Year of manufacture 5) Length marking Ex.1) For single jacket/single armor single mode 36-fiber cable 0000F Purchaser s name SJSA SM36C LG Cable F 6.2 Cable Packing Standard length of cable shall be 2km and 4km. Other cable length is also available if required by customer Each length of the cable shall be wound on a separate wooden reel Both ends of the cable shall be sealed with a suitable plastic cap to prevent the entry of moisture during shipping, handling and storage Circumference battens or Wood-fiber board shall be secured with steel bands to protect the cable during normal handling and shipping The cable ends shall be securely fastened to the reel to prevent the cable form becoming loose in transit or during placing operations. 6.3 Cable Reel Details given below shall be distinctly marked on a weather proof materials on both outer sides of the reel flange: (1) Length of cable in foot (2) Number of fibers and size (3) Gross weight in pounds (4) Reel number (5) Name of the manufacturer (6) Year of manufacture (7) Arrow showing the direction the drum shall be rolled Other shipping mark is also available if requested by customer The cable shall be shipped on reels designed to prevent damage to the cable during shipment and installation. PAGE 7 OF 9

8 6.3.3 The arbor hole on each flange shall be lined with a metal plate. < Cross-sectional Drawing of Cable > 1. SJSA 144-Fiber Cable Optical Fibers Filling Compound Loose Buffer Tubes Water Swellable Material Dielectric CSM CSM Over-Coat Water Swellable Tape Outer Strength Member Ripcords Corrugated Steel Tape Armor Outer MDPE Jacket 2. SJSA 216-Fiber Cable Optical Fibers Filling Compound Loose Buffer Tubes Water Swellable Material Dielectric CSM Water Swellable Tape Outer Strength Member Ripcords Corrugated Steel Tape Armor Outer MDPE Jacket PAGE 8 OF 9

9 3. Diameter, Weight and Minimum Bending Radius No. of Fibers Nominal Cable Diameter Approx. Cable Weight Minimum Bending Radius (mm) mm in kg/km lbs/1000ft Under Load No Load 2 ~ ~ ~ ~ ~ ~ ~ ~ *) Actual values for cable weight and diameter may deviate from the calculated values given in the table above. == End of Specification == PAGE 9 OF 9