SPEC NO. TEC-OPTIC-81101A(Rev.4)-2014.07 TECHNICAL PROPOSAL FOR OPTICAL FIBER CABLE, ALL DIELECTRIC SELF SUPPORTING CABLE ( Span length : Max. 100m ) APPROVED BY : J.Y. LEE / HEAD OF TEAM ENGINEERING TEAM Ⅱ / PRODUCTION DIVISION PREPARED BY : G.S. CHO / ENGINEER ENGINEERING TEAM Ⅱ / PRODUCTION DIVISION
1. GENERAL This specification covers the design requirements and performance standard for the supply of optical fiber cable. 1.1 Cable Description cable is a design that has high tensile strength and flexibility in a compact cable size. TAIHAN's loose tube cable provides excellent optical transmission and physical performance. 1.2 Quality TAIHAN ensure a continuing level of quality in our cable products through several quality control program including ISO 9001. 1.3 Reliability TAIHAN ensure product reliability through rigorous qualification testing of each product family. Both initial and periodic qualification testing are performed to assure the cable's performance and durability in the field environments. 1.4 Reference IEC 60793, 60794. ITU-T G 650, G.652.D. 2. OPTICAL FIBER 2.1 ITU-T G.652.D TAIHAN offers single mode fiber manufactured by the vapour axial deposition (VAD) process to produce the highest quality glass with excellent geometry, high strength characteristics, and attenuation that approaches theoretical minimum. The single mode fiber is fully compatible with other commercially available single mode fibers and has the zero dispersion wavelength around 1310nm. The main operating wavelength region of the fiber is around 1310nm and 1550nm. - 1 -
2.2 General Design Its optical properties are achieved through a germanium doped silica based core with a pure silica cladding. An acrylate protective coating is applied over glass cladding to provide the necessary maximum fiber lifetime. 2.3 Construction Mode field diameter at 1310nm 9.2 ± 0.7μm Mode field concentricity error 0.8μm Cladding diameter 125 ± 1μm Cladding non-circularity 2% Primary coating material UV curable acrylate diameter 250 ± 15μm 2.4 Optical characteristics Attenuation at 1310nm at 1550nm Dispersion at 1310nm at 1550nm Zero dispersion wavelength Zero dispersion slope Cable cut off wavelength 0.36 db/km. 0.22 db/km < 3.5 ps/(nm.km) < 18 ps/(nm.km) 1300nm 1324nm < 0.093 ps/(nm².km) < 1260nm 2.5 Mechanical characteristics Fiber proof test level Bending test (75mm diameter mandrel 100turns, loss change) 1% x 1sec 0.1dB at 1550nm 2.6 Removal of primary coating For jointing, removal of primary coating is achieved without the use of any chemicals. A simple mechanical operating is sufficient to prepare the fiber for jointing. - 2 -
3. CABLE 3.1 Cable design The cable core contains the loose tubes with fibers and jelly compound and the fillers which is stranded (S-Z stranding method) around central strength member consisting of FRP with or without PE coating. And then water blocking yarns and wrapping tape shall be applied. Finally, water blocking yarns, aramid yarns and outer sheath apply over the cable core. 3.2 Cable construction The cable construction shall be in accordance with following table1, 2, 3, fig 1 and 2. 3.3 Sheath marking Required marking can be indented on the cable sheath at regular intervals of one meter. Continuously sequential numbering shall be employed starting from zero at the inner end. 4. CABLE TEST 4.1 Tensile strength 1) Test method : IEC-60794-1-2 E1 2) Load value : 2000 N 3) Test length : Not less than 100m 4) Applied time : 1 hour 5) Acceptable criteria : Loss variation (Less than 0.1dB) 4.2 Crush test 1) Test method : IEC 60794-1-2 E3 2) Applied load : 1000N/100mm plate 3) Loading time : 1 min 4) Acceptable criteria : Loss variation (Less than 0.1dB) - 3 -
4.3 Impact resistance test 1) Test method : IEC 60794-1-2 E4 2) Test load : 9.8N x 1m x 10 different point impacts 3) Acceptable criteria : Loss variation (Less than 0.1dB) 4.4 Torsion test 1) Test method : IEC 60794-1-2 E7 2) Test length : 2 to 5m 3) Twist angle : +,- 180 degree 4) Twist cycle : 5 times 5) Acceptable criteria : Loss variation (Less than 0.1dB) 4.5 Temperature cycling 1) Test method : IEC 60794-1-2 F1 2) Test length : more than 1000m 3) Temperature : +20-40 +70 4) Test time : 12hr per each step 5) Test cycles : 1 cycle 6) Acceptable criteria : Loss variation (Less than 0.1dB/km ) 4.6 Cable bend test 1) Test method : IEC 60794-1-2 E11 2) Diameter of mandrel : Diameter of cable x 20 times 3) Bending cycle : 1 times 4) Acceptable criteria : Loss variation (Less than 0.1dB) - 4 -
5. PACKING AND MARKING 5.1 Packing-Cable drum Nominal shipping cable length shall be 4000m. Each length of cable shall have both ends effective sealed. Each cable drum shall be marked to indicate the direction of rotating for reeling of the cable. On both side of the cable drum, required marking shall be printed. The minimum barrel diameter of the drums shall be 40times the nominal diameter of the cable. 5.2 Marking Required letters shall be distinctly marked on a weatherproof material on both outer sides of the drum flange. The marking plates shall be made of a non-corrodible material. Table 1. Color Coding of Optical Fiber in Tube Number of fiber per tube 1 2 3 4 5 6 7 8 9 10 11 12 6 cores Blue Orange Green Brown Slate White - - - - - - 12 cores Blue Orange Green Brown Slate White Red Black Yellow Violet Pink Aqua - 5 -
Table 2. Color Coding of Loose Tube Number of fiber 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 for cable ~6 cores (~6) Blue Filler Filler Filler Filler - - - - - - - - - - 12 cores (6) Blue Orange Filler Filler Filler - - - - - - - - - - 24 cores (6) Blue Orange Green Brown Filler - - - - - - - - - - 36 cores (12) Blue Orange Green Filler Filler - - - - - - - - - - 48 cores (12) Blue Orange Green Brown Filler - - - - - - - - - - 60 cores (12) Blue Orange Green Brown Slate - - - - - - - - - - 72 cores (12) Blue Orange Green Brown Slate White - - - - - - - - - 96 cores (12) Blue Orange Green Brown Slate White Red Black - - - - - - - 144cores (12) Blue Orange Green Brown Slate White Red Black Yellow Violet Pink Aqua - - - 192 1 st Blue Orange Green Brown Slate White - - - - - - - - cores (12) 2 nd Blue Orange Green Brown Slate White Red Black Yellow Violet Filler Filler - - 288 cores (12) 1 st Blue Orange Green Brown Slate White - - - - - 2 nd Blue Orange Green Brown Slate White Red Black Yellow Violet Pink Aqua Blue Orange Green - 6 -
Table 3. Construction of Optical Fiber Cable Item Construction Total fiber number (cores) ~6 12 24 36 48 60 72 96 144 192 288 Number of loose tube (ea) 1 2 4 3 4 5 6 8 12 1 st : 6 2 nd : 10 1 st : 9 2 nd : 15 Number of filler (ea) 4 3 1 2 1 0 0 0 0 2 0 Number of fiber per tube (core) ~6 12 Tube Filler material Material Filling material PBT (Polybutylene Terephthalate) Thixotropic jelly compound PE string Central strength member Water blocking material Outer tensile strength s material Cable Outer diameter (Nom. mm) Weight (Nom. kg/km) FRP (Fiber Reinforced Plastic) with or without PE s PET tape 2 ea(red color) Black color HDPE (ASTM D 1248 TYPE III, Class C, Cat. 4, Grade E8) 9.0 9.6 9.9 11.3 14.4 14.6 16.5 60 70 80 100 165 155 210 Min. Bending radius Installation Operation O.D X 15 times O.D X 20 times Installation - 30 to +60 Temperature range Operation - 40 to +70 Storage - 40 to +75 Stringing tension 0.86kN 1.06kN 1.28kN 1.96kN 3.04kN 1.74kN 2.6kN Max. Rated cable load 2kN 2.4kN 2.9N 4.5kN 7.0kN 4.0kN 6.6kN Approx. Cable breaking strength 4.3kN 5.3kN 6.4kN 9.8kN 15.2kN 8.7kN 13.3kN - 7 -
- 2~6core cable Fig. 1. Cross section optical fiber cable Filler (Under 6cores) FRP - 12core cable Filler FRP - 8 -
- 24core cable Filler FRP - 36 core cable Filler FRP - 9 -
- 48 core cable Filler FRP ripcord - 60 core cable FRP - 10 -
- 72 core cable FRP - 96 core cable FRP with PE coating - 11 -
- 144 core cable FRP with PE coating - 192 core cable Filler FRP - 12 -
- 288 core cable FRP with PE coating - 13 -
Fig. 2. Cross section for wooden drum - 14 -
[ unit : mm ] Reel No Flange Dia. Barrel Dia. Drum details (Nominal) Inner width Outer width Spindle hole Dia. K9-1 1100 600 630 750 110 K9-2 1150 600 630 750 110 K9-3 1200 600 630 750 110 K9-4 1150 700 630 750 110 K9-5 1200 700 630 750 110 K9-6 1250 700 630 750 110 K9-7 1300 700 630 750 110 K9-8 1350 700 630 750 110 K9-9A 1400 700 630 750 110 K9-10 1450 700 630 750 110 K11-1 1400 800 750 900 110 K11-2 1500 800 750 900 110 K11-3 1600 800 750 900 110 K13-1 1500 1000 750 900 110 K13-1A 1550 1000 750 900 110 K13-2 1600 1000 750 900 110 K13-2A 1650 1000 750 900 110 K13-3 1700 1000 750 900 110 K13-3A 1750 1000 750 900 110 K13-4 1800 1000 750 900 110 K13-4A 1850 1000 750 900 110 K14-1 1700 1200 870 1050 110 K14-2 1800 1200 870 1050 110 K14-3 1850 1200 870 1050 110 K14-4 1900 1200 870 1050 110 K14-5 1950 1200 870 1050 110 K14-6 2000 1200 870 1050 110 - We apply BS standard and DEF standard for drum construction, bolt size and etc - The dimension of drum is nominal value, but if necessary, it is possible to change the dimension. - 15 -