TECHNICAL SPECIFICATIONS For

Transcription

1 TECHNICAL SPECIFICATIONS For FIBER OPTIC CABLE OUTDOOR/ADSS, MULTI LOOSE TUBE SINGLEMODE (ITU-T G.652.D Fibers) Spec. NO.: BISMON Revision: 0 Issued Date: May. 19, 2009 Page 1 of 11

2 Technical Specifications for All Dielectric Self Supporting Optical Fiber Cable 1. Application This specification covers the construction and properties of outdoor/adss (All-Dielectric Self Support), single jacket, dry core loose tube (multi loose tube) fiber optic cable. The Dry-Core Loose Tube Optical Cables contain 6 to 96 optical fibers. The color coded fibers are housed in multiple color coded plastic buffer tubes which are stranded around a dielectric central strength member. Dry water blocking tapes or yarns, wrapped around the core, provide protection against water ingress. These user friendly elements replace the sticky cable filling gel used in traditional loose tube cable designs. Aramid yarns, which provide additional tensile strength, are applied over the cable core. The cable sheath is composed of a smooth high density polyethylene (HDPE) jacket. And the optical fibers are in compliance with ITU-T Rec.G.652. D fiber optic cable in accordance with - ISO/IEC ANSI/TIA/EIA-568-B.3 - Telcordia (Bellcore) GR-20-CORE - ANSI/ICEA EN ITU-T G.652.D for singlemode - TIS (2005) Optical fiber cables Part 3-20 : Outdoor cable- Family specification for optical self-supporting aerial telecommunication cables. High quality optical fiber made with pure silica-based glass have very low loss for infrared wavelengths and can be used to carry large amounts of information for very long distances in optical communication systems. High fiber strength is obtained by protecting the surface of the glass fiber with thin coating layers of polymeric materials. The coated Fibers are then placed in cable structures having additional layers to protect the fiber during the rigors of outside plant installation and to provide long term reliable operation in the outside plant environment. The design philosophy in meeting these objectives is to provide high quality, rugged, well-tested fiber optic cables, which are compact and have a high strength-to-weight ratio. Compact fiber optic cables are easier to handle and install in the field and provide longer length for field installation. 2. Optical Fiber BISMON Zero Water Peak (ZWP) Single Mode Fiber consists of a germanium doped core and a silica cladding. The fiber is fully compatible with other commercially available matched cladding fibers. BISMON ZWP Single Mode Optical Fiber is the industry s first fiber designed for use with transmission systems operating in entire wavelength region from 1280 to 1625 nm. Current systems operate in either the 2 nd window ( nm) or the 3 rd window ( nm).the 5 th window from 1350 to 1450 nm has not been available because of higher attenuation (up to 1 db/km) over much of the region. BISMON ZWP fiber enables usage over this much wider range because of a new manufacturing process, which practically eliminates the incorporation of OH ions (water) into the fiber. A concentration of several parts per billion (ppb) of OH ions in a conventional single mode fiber core cause the attenuation in the region around 1385 nm (the water peak) to be up to 300% higher than in the 1310 nm region. With BISMON ZWP fiber, the attenuation in the 5 th Spec. NO.: BISMON Revision: 0 Issued Date: May. 19, 2009 Page 2 of 11

3 window is always less than that in the 2 nd window. BISMON Fibers feature a dual UV curable acrylate coating system, which provides unparalleled performance in a wide range of environmental conditions. The advantages of this coating structure are excellent resistance to micro-bending induced losses, superior hydrolytic stability and long term preservations of color code integrity. The coating is easily strippable using mechanical methods. Fig.1 Refractive index profile, Dispersion Unshifted Single Mode Fiber. Fig. 2 Cross Section View of Dispersion Unshifted Single Mode Fiber. Spec. NO.: BISMON Revision: 0 Issued Date: May. 19, 2009 Page 3 of 11

4 Table 1. The Optical, Geometrical Performance of the Singlemode Fiber (The specification conforms to the requirement of ISO/IEC11801, TIA/EIA-568-B.3, IEC B1.3, ITU-T Rec. G.652 D, Bellcore GR-20-CORE) Fiber attributes Item Description Notes Manufacturing Method VAD (vapor axial deposition method) - Refractive Index Profile Step Index, Matched Cladding - Core Germania (GeO2) doped Silica (SiO2) - Core Diameter 8.3 μm 2 Cladding Silica (SiO2) - Primary Coating 2 layers of UV curable resin - Index of refraction Difference 0.36% 2 Group refractive index * 1310 nm and 1550 nm 2 Cladding Diameter 125 ±1 μm 1 Cladding Non-Circularity 1 % 1 Core/Cladding Concentricity error 0.5 μm 1 Coating Diameter (uncolored) 245 ±10 μm 1 Coating/Cladding Concentricity error 12 μm 1 Colored Fiber Diameter 250 ±15 μm 1 Mode Field Diameter 9.2 ± nm 10.4 ± nm 1 The entire length of fiber is subjected to tensile stress Proof test stress greater than 0.69 GN/m 2 (100 kpsi) : 1% strain 1 equivalent, 1s Attenuation 100 turns, 25 mm radius with Bending 1 turns, 16 mm radius nm nm nm 1 Zero-Dispersion Wavelength ( 0 ) nm 1 Max. Zero-Dispersion Slope (S0max) at ps/(nm 2.km) 1 Chromatic dispersion coefficient, D( ) < ~ 1339 nm < nm 2 Coating Strip Force (@ 0 C to +45 C) 1.3N (0.3lbf) F 8.9 N (2.0lbf) 2 Cable attributes Item Description Notes Attenuation coefficient nm nm nm Attenuation discontinuities (step) 0.10 db at 1310 nm and 1550 nm 1 Cabled Cut-off Wavelength ( cc) 1260 nm 1 Spec. NO.: BISMON Revision: 0 Issued Date: May. 19, 2009 Page 4 of 11

5 Polarization mode dispersion (PMD) (Link Design Value) Notes: 1. Qualification Requirement 2. Typical Value, Not Specified < 0.20 ps/ km 1 3. Cross Section of Cable Fig. 3-1 Cross-section view of outdoor/adss (All-Dielectric Self Support), single jacket, multi loose tube fiber optic cable Spec. NO.: BISMON Revision: 0 Issued Date: May. 19, 2009 Page 5 of 11

6 Fig. 3-2 Cross-section view of outdoor/adss (All-Dielectric Self Support), single jacket, multi loose tube fiber optic cable Spec. NO.: BISMON Revision: 0 Issued Date: May. 19, 2009 Page 6 of 11

7 4. Cable Construction The construction of the cable shall be in accordance with Table 2 below. Table 2. Construction of outdoor cable, ADSS (All-Dielectric Self Support), single jacket, multi loose tube fiber optic cable Item Description 2 30 Fibers 36 Fibers Fibers 96 Fibers Optical Fiber Construction Table 1 Filling Compound Material Thixotropic Jelly Compound Material (PBT) Polybutylene Terephthalate with color coding Fiber per Tube Max.6 Max.12 Loose Tube Number Assembly Fibers are brought together with the filling compound and placed in the extruded tube Filler Rod Material Polyethylene, natural color Number Stranding Method Reverse oscillating lay (ROL) technique (SZ Direction) Central Strength Member Material FRP (Fiberglass Reinforce with Plastic) Water Blocking Suitable Water Swellable Materials (Dry-Core Technology) Material Elements Core Covering Material Water Blocking Tape Assembly The tape shall be wrapped longitudinally over the cable core Ripcord Material Polyester cords Additional Strength Material Aramid yarns Member Number The quantity of additional strength member shall be selected to Minimize cable cost while meeting the performance requirement of the cable application Sheath Material Black High Density Polyethylene Thickness Nominal 1.5 mm Cable Diameter (Approx.) mm Cable Weight (Approx.) kg/km Structure Fig. 3 *The thickness of the thinnest point shall not be measured at the groove of the ripcord. **Manufacturer may use additional suitable tape(s), thread(s) or dielectric element into suitable place in the cable for manufacturer s reason. Spec. NO.: BISMON Revision: 0 Issued Date: May. 19, 2009 Page 7 of 11

8 5. Temperature Range For the cables covered by this specification, the following temperature ranges apply: - Operation : -40 C to +70 C - Installation : -40 C to +70 C - Storage/Shipping : -40 C to +85 C 6. Fiber and Loose Tube Identification The color code of the loose tubes and the individual fibers within each loose tube shall be in accordance with Table4below.TIA/EIA-598-A Color Code for Fiber and Loose tube Identification. Table 3. TIA/EIA-598-A Color Code for Fiber and Loose tube Identification No. Fiber Color Loose Tube Color 1 Blue Blue 2 Orange Orange 3 Green Green 4 Brown Brown 5 Slate Slate 6 White White 7 Red Red 8 Black Black 9 Yellow - 10 Violet - 11 Rose - 12 Aqua - Table 4. Mechanical Specification of the cable Item Specification Maximum Span Length 50 m Minimum installation Sag 0.5% of Maximum Span Length Maximum Wind Velocity 144 km/hr Maximum allowable pulling tension (During Installation) 1,200 N Minimum bending Radius During Installation Or handling 20 x External Diameter of Cable During Service Or fixed 10 x External Diameter of Cable Note: The maximum allowable pulling tension is the greatest pulling force that can be applied to a cable during installation without cable damaging Spec. NO.: BISMON Revision: 0 Issued Date: May. 19, 2009 Page 8 of 11

9 7. Mechanical/Environment Performance and Test This section covers the mechanical and environmental for the cable Table 5. Mechanical, Environmental Requirements for the cables Item Specification Method Torsion Test TIA/EIA A or IEC E7 Test Maximum attenuation change 0.10dB at sample; 2 m Maximum Load; per table 2, 1550nm. No cable jacket cracking or EIA A Rotation; ±180 degree, 10 splitting. cycles Maximum attenuation change 0.10dB at IEC E1A Test sample; 25 m Tensile Performance 1550 nm at tensile load 1,200N. No cable Minimum Sheave Dia.;480 mm (Universal) Test jacket cracking or splitting. Duration ; 1 hr Impact Test TIA/EIA B or IEC E4 Maximum attenuation change 0.10dB at Starting Energy; depend on cable diameter, 1550 nm. No cable jacket cracking or per Table 1 EIA/TIA B Number splitting. Impact; 25 Test sample; Approx. 20 m TIA/EIA A or IEC E6 Maximum attenuation change 0.10dB at Repeated Bending Sheave Dia.; 20 x cable dia. Number 1550 nm. No cable jacket cracking or Test Cycles ; 25 Load; per Table 2, splitting. EIA A Test Sample ; Approx. 20 m Compression test TIA/EIA A or IEC E3 Maximum attenuation change 0.10dB at Load; 2,200N(220N/cm) Non-armored 1550 nm. No cable jacket cracking or Duration; 10 minutes Test sample ; splitting. Approx.20 m Cable Bending Test Maximum attenuation change 0.10dB at IEC E11B Mandrel Diameter : nm. No cable jacket cracking or x Cable diameter Cycles : 1 splitting. Water Penetration Test No fluid leakage through the open cable end after 1 hour. EIA B or IEC F5 Fluid Pressure; 1m static head or equivalent pressure. Test sample ; 3 m Duration ; 1 hour Temperature Cycling Test Max. Attenuation change 0.10dB/km at 1550 nm at operating temp. No cable jacket cracking or splitting. TIA/EIA-455-3A or IEC F1 Time at Temp. ; At least 16 hr. Each Temp. Temp. Range ; -40 C(±2 C)Minimum +70 C(±2 C)Maximum Number of Cycles; Not less than 1 cycle Spec. NO.: BISMON Revision: 0 Issued Date: May. 19, 2009 Page 9 of 11

10 8. Cable Marking and Shipping Requirements 8.1 Sheath marking The sheath marking is available upon customer's request. The sheath marking shall be printed (Hot Stamp) on the outer sheath of the cable with white color in one-meter intervals. 8.2 Reels The cable will be delivered at the required length on a wooden reel. The reels are designed to prevent damage to the cable during shipment and installation The cable shall be delivered on wooden reel in standard manufacturing length of 4,000 m. (Special length is available upon request) The diameter of the barrel shall be not less than 30 times of the outer diameter of the cable Circumference shall be completely enclosed with wooden battens, these battens shall be secured by nails to each flange. There are steel bands are strapped about the wooden batten to help secure the battens to the reel To provide access for testing, the inner end of the cable protrudes through the inside of the reel. The end is securely kept on the side of the flange to protect it during transport and storage. The length of the inner end is typically 1 meter. The cable ends are securely fastened so as not to protrude beyond any portion of the reel in an unprotected manner and to prevent the cable from becoming loose in transport. 8.3 Sealing and Cable Termination The both end of the cable shall be sealed with a suitable rubber cap or heat shrinkable cap to prevent ingress of moisture. 8.4 Information Accompanying the Reel The following information is securely attached to the reel. - Manufacturer's Name - Drum No. - Customer's Name - Reel ID. - Customer Order Number - Ship Length - Customer Part Number (if Applicable) - Gross Weight - Kind & Size (Cable Description) - Net Weight - Order Length - Date - Outside sequential - Inside sequential - Inspected by Spec. NO.: BISMON Revision: 0 Issued Date: May. 19, 2009 Page 10 of 11

11 Appendix A The Calculation of Single Mode Optical Fiber Life-time The calculated life time, according to the failure frequency technique, is as follows Formula ; F = 1 - exp ( -NpL x ([1+(ts/tp)x(kx s/ p)n ] m/(n-2) -1 )) Where F = Failure probability (%) Np = Failure probability at the proof test (times/km) : 0.02 L = Fiber length (km) : 100 ts = Life time (Sec.) : x109(40Years) tp = Duration of proof test (Sec.) : 1 s = Strain in life time (%) : 0.2 p = Strain of Proof test (%) : 1 n = Stress corrosion factor : 21 m = Weibull slope in low strength region : 2 k = Safety factor at minimum proof strain : 1 Failure probability (F) for fiber with length 100 km for 40 years is % End of specifications Spec. NO.: BISMON Revision: 0 Issued Date: May. 19, 2009 Page 11 of 11