Communication Technology

LiGRT Optical Fiber brand is committed to the R&D, manufacture, sales and service of optical fiber preform, optical fiber and cable for telecommunication uses, optical fiber sensor safety monitoring system and other special fiber uses. Our customers include covered backbone, MAN and access network as well as broadcasting & TV, power grid, railway, national defense and oil pipeline signal system.

Product

LiGRT OPTICAL FIBER CABLE

LiGRT Optical Fiber brand is committed to the R&D, manufacture, sales and service of optical fiber preform, optical fiber and cable for telecommunication uses, optical fiber sensor safety monitoring system and other special fiber uses. Our client base includes covered backbone, MAN and access network as well as broadcasting & TV, power grid, railway, national defense and oil pipeline signal system. We apply the innovated AFHD to fabricate optical fiber preform. It is featured by high efficiency and consistency compared with the preforms fabricated by traditional method.

Standard Single Mode Fiber (G.652B)

We applied non-zero dispersion shifted single mode fiber complies with or exceeds the specification of ITU-T 652B anf IEC60793-2-50 B1.1 type optical fiber. The standard zero dispersion wavelength is 1310nm and there is a higher dispersion at 1550nm. It can be applied either 1310nm or 1550nm. The best operating wavelength is around 1310nm.

Item Unit Technology Standard
Transmission Performance
Attenuation @ 1310nm dB/km ≤ 0.34
Attenuation @ 1550nm dB/km ≤ 0.20
Attenuation @ 1625nm dB/km ≤ 0.24
Attenuation discontinuity dB ≤ 0.03
Attenuation-wavelength Characteristic dB/km ≤ 0.03
Zero dispersion wavelength nm 1300~1324
Zero dispersion slope ps/(nm2.km) ≤ 0.090
Dispersion @ 1288-1339nm ps/(nm.km) ≤ 3.5
Dispersion @ 1271-1360nm ps/(nm.km) ≤ 5.3
Dispersion @ 1550nm ps/(nm.km) ≤ 18
PMD Ps/√km ≤ 0.1
Cut-off wavelength (λ cc) nm ≤ 1260
Macro-bend loss (1550nm) dB 30mm radius 100turns, ≤0.1
Macro-bend loss (1625nm) dB 30mm radius 100turns, ≤0.1
Geometric Performance
Mode field diameter @ 1310nm µm 9.2 ± 0.5
Cladding diameter µm 125 ± 1
Core/Cladding Concentricity Error µm ≤ 0.6
Cladding Non-Circularity % ≤ 1
Coating diameter (uncolored) µm 243 ± 7
Cladding/Coating Concentricity Error µm ≤ 8
Mechanical Performance
Proof test level % ≥ 1.0
Fiber Strength 10m, Weibull lowest probability level; 2.76GPa (15%)
Dynamic corrosion parameter nd ≥ 20
Curl radius m ≥ 4
Strip force Average value N 1~5
Peak value 1~8.9
Environment Performance
Temperature performance (-60°C ~ + 85°C) Additional attenuation ≤ 0.05dB/km is allowed @ 1310nm and 1550nm
Immersing performance (23±2°C, 30 days)
Humidity and heat performance (85±2°C, humidity degree over 85%, 30days)
Heat aging performance (85±2°C, 30days)

Low Water Peak Optical Fiber (G.652D)

Our low water peak non-zero dispersion shifted single mode optical fiber, which complies with or exceeds the standard of ITU-T G.652D and IEC60793-2-50 B1.3 type optical fiber, is applied to the transmission system of full wavelength from 1260nm to 1625nm. It eliminates the assimilating water pwak include by OH- @ 1383nm to standard single mode optical fiber, and enlarge the work windows to E-\ wavelength (1380nm-1480nm). The optical fiber eigenvalue to attenuation and dispersion is optimized at all wave length, which satisfies the transmission demand of multiple channel and high speed.

Item Unit Technology Standard
Transmission Performance
Attenuation @ 1310nm dB/km ≤ 0.34
Attenuation @ 1550nm dB/km ≤ 0.20
Attenuation @ 1383nm dB/km ≤ 0.30
Attenuation @ 1625nm dB/km ≤ 0.24
Attenuation discontinuity dB ≤ 0.03
Attenuation-wavelength Characteristic dB/km ≤ 0.03
Zero dispersion wavelength nm 1300~1324
Zero dispersion slope ps/(nm2.km) ≤ 0.090
Dispersion @ 1288-1339nm ps/(nm.km) ≤ 3.5
Dispersion @ 1271-1360nm ps/(nm.km) ≤ 5.3
Dispersion @ 1550nm ps/(nm.km) ≤ 18
PMD Ps/√km ≤ 0.1
Cut-off wavelength (λ cc) nm ≤ 1260
Macro-bend loss (1550nm) dB 30mm radius 100turns, ≤0.1
Macro-bend loss (1625nm) dB 30mm radius 100turns, ≤0.1
Geometric Performance
Mode field diameter @ 1310nm µm 9.2 ± 0.5
Cladding diameter µm 125 ± 1
Core/Cladding Concentricity Error µm ≤ 0.6
Cladding Non-Circularity % ≤ 1
Coating diameter (uncolored) µm 243 ± 7
Cladding/Coating Concentricity Error µm ≤ 8
Mechanical Performance
Proof test level % ≥ 1.0
Fiber Strength 10m, Weibull lowest probability level; 2.76GPa (15%)
Dynamic corrosion parameter nd ≥ 20
Curl radius m ≥ 4
Strip force Average value N 1~5
Peak value 1.3~8.9
Environment Performance
Temperature performance (-60°C ~ + 85°C) Additional attenuation ≤ 0.05dB/km is allowed @ 1310nm and 1550nm
Immersing performance (23±2°C, 30 days)
Humidity and heat performance (85±2°C, humidity degree over 85%, 30days)
Heat aging performance (85±2°C, 30days)

Bend-insensitive Optical Fiber (G657.A2)

Our Bend insensitive type-A optical fiber complies with or exceeds the specification of ITU-T G.657 recommendation of type-A optical fiber. It has all characteristics of our low water peak fiber, and complies with the requirement suggested by ITU-T G.657D and the standard of IEC60793-2-50 B1.3 type optical fiber, it is a bend-insensitive low water peak optical fiber with better macro-bend resistance performance.

Item Unit Technology Standard
Transmission Performance
Attenuation @ 1310nm dB/km ≤ 0.35
Attenuation @ 1550nm dB/km ≤ 0.21
Attenuation @ 1383 ± 3nm dB/km ≤ 0.35
Attenuation @ 1625nm dB/km ≤ 0.24
Attenuation discontinuity dB ≤ 0.03
Attenuation-wavelength Characteristic dB/km ≤ 0.03
Zero dispersion wavelength nm 1300~1324
Zero dispersion slope ps/(nm2.km) ≤ 0.090
Dispersion @ 1288-1339nm ps/(nm.km) ≤ 3.5
Dispersion @ 1271-1360nm ps/(nm.km) ≤ 5.3
Dispersion @ 1550nm ps/(nm.km) ≤ 18
PMD Ps/√km ≤ 0.1
Cut-off wavelength (λ cc) nm ≤ 1260
Macro-bend Loss
R15mm/10 turns/1550nm dB ≤ 0.03
R10mm/1 turns/1550nm dB ≤ 0.1
R7.5mm/1 turns/1550nm dB ≤ 0.5
R15mm/10 turns/1625nm dB ≤ 0.1
R10mm/1 turns/1625nm dB ≤ 0.2
R7.5mm/1 turns/1625nm dB ≤ 1
Geometric Performance
Mode field diameter @ 1310nm µm (8.6-9.2) ± 0.4
Cladding diameter µm 125 ± 0.7
Core/Cladding Concentricity Error µm ≤ 0.5
Cladding Non-Circularity % ≤ 1
Coating diameter (uncolored) µm 243 ± 7
Cladding/Coating Concentricity Error µm ≤ 8
Mechanical Performance
Proof test level % ≥ 1.0
Fiber Strength 10m, Weibull lowest probability level; 2.76GPa (15%)
Dynamic corrosion parameter nd ≥ 20
Curl radius m ≥ 4
Strip force Average value N 1~5
Peak value 1.3~8.9
Environment Performance
Temperature performance (-60°C ~ + 85°C) Additional attenuation ≤ 0.05dB/km is allowed @ 1310nm and 1550nm
Immersing performance (23±2°C, 30 days)
Humidity and heat performance (85±2°C, humidity degree over 85%, 30days)
Heat aging performance (85±2°C, 30days)

Bend-insensitive Optical Fiber (G657.B2)

Our Bend insensitive type-B optical fiber complies with or exceeds the specification of ITU-T G.657 recommendation of type-B optical fiber. The fiber adopts the manufacture process of low water peak fiber with low attenuation at all wavelength (1260nm-1625nm). Compared with common single mode fiber, this fiber has better bend resistance. Under the windows of 1550nm, the appended attenuation of fibers with 7.5nm end radius is less than 0.5dB, which can satisfy the special demand of bend capability of cables with smaller bend radius and optical components with small size.

Item Unit Technology Standard
Transmission Performance
Attenuation @ 1310nm dB/km ≤ 0.35
Attenuation @ 1550nm dB/km ≤ 0.21
Attenuation @ 1383 ± 3nm dB/km ≤ 0.35
Attenuation @ 1625nm dB/km ≤ 0.23
Attenuation discontinuity dB ≤ 0.05
Attenuation-wavelength Characteristic dB/km ≤ 0.03
Zero dispersion wavelength nm 1300~1324
Zero dispersion slope ps/(nm2.km) ≤ 0.090
Dispersion @ 1288-1339nm ps/(nm.km) ≤ 3.5
Dispersion @ 1271-1360nm ps/(nm.km) ≤ 5.3
Dispersion @ 1550nm ps/(nm.km) ≤ 18
PMD Ps/√km ≤ 0.1
Cut-off wavelength (λ cc) nm ≤ 1260
Macro-bend Loss
R15mm/10 turns/1550nm dB ≤ 0.03
R10mm/1 turns/1550nm dB ≤ 0.1
R7.5mm/1 turns/1550nm dB ≤ 0.5
R15mm/10 turns/1625nm dB ≤ 0.1
R10mm/1 turns/1625nm dB ≤ 0.2
R7.5mm/1 turns/1625nm dB ≤ 1
Geometric Performance
Mode field diameter @ 1310nm µm (8.6-9.2) ± 0.4
Cladding diameter µm 125 ± 0.7
Core/Cladding Concentricity Error µm ≤ 0.5
Cladding Non-Circularity % ≤ 1
Coating diameter (uncolored) µm 243 ± 7
Cladding/Coating Concentricity Error µm ≤ 8
Mechanical Performance
Proof test level % ≥ 1.0
Fiber Strength 10m, Weibull lowest probability level; 2.76GPa (15%)
Dynamic corrosion parameter nd ≥ 20
Curl radius m ≥ 4
Strip force Average value N 1~5
Peak value 1.3~8.9
Environment Performance
Temperature performance (-60°C ~ + 85°C) Additional attenuation ≤ 0.05dB/km is allowed @ 1310nm and 1550nm
Immersing performance (23±2°C, 30 days)
Humidity and heat performance (85±2°C, humidity degree over 85%, 30days)
Heat aging performance (85±2°C, 30days)

Non-Armored Cable


Application:This type of cable could be used for Aerial or duct.
Operating Temperature: -20°C~+70°C
Strength member diameter: 1.0mm x 2nos. (Could be modified as per application)

Structure Parameter
Fiber Count 2-12
Fiber per tube 2-12 nos fiber
Loose tube material Polybutelene Terephthalate (PBT)
Filling component in the loss tube Thixotropic Jelly
Outer Sheath Black PE
Strength member Material Non-metallic strength member Fiberglass Reinforce with Plastic (FRP)
Bending Radius Dynamic: ≥20 x Cable Diameter Static: ≥10 x Cable Diameter
Tensile Strength* 400-600 N
Crush Resistance** 1000 N/10cm
*Depends on the diameter of the cable/customer’s requirement
**Could be change as per application/customer’s requirement
Note: The diameter could be modified as per customers requirement.

Armored Cable


Application: This type of cable could be used for Aerial, duct or burial
Operating Temperature: -40°C~+70°C
Strength member diameter: 2.2mm x 1no. (Could be modified as per application)

Structure Parameter
Fiber Count 48-144
Fiber per tube Max. 12 nos fiber per tube
Loose tube material Polybutelene Terephthalate (PBT)
Filling component in the loss tube Thixotropic Jelly
Armor Type Corrugated Steel Tape
Outer Sheath Black PE
Strength member Material Non-metallic strength member Fiberglass Reinforce with Plastic (FRP)
Bending Radius Dynamic: ≥20 x Cable Diameter Static: ≥10 x Cable Diameter
Tensile Strength* 4000 N
Crush Resistance** 3000 N/10cm
*Depends on the diameter of the cable/customer’s requirement
**Could be change as per application/customer’s requirement
Note: The diameter could be modified as per customers requirement.

Messenger Cable


Application: This type of cable could be used for Aerial
Operating Temperature: -20°C~+70°C
Strength member diameter: 1mm x 1no. (Could be modified as per application)
Suspension wire diameter: 1mm x 1-7nos. (Could be modified as per application)
 
Structure Parameter
Fiber Count 2-144
Fiber per tube Max. 12 nos fiber per tube
Loose tube material Polybutelene Terephthalate (PBT)
Filling component in the loss tube Thixotropic Jelly
Suspension Wire Stranded galvanized steel wire
Outer Sheath Black PE
Strength member Material Non-metallic strength member Fiberglass Reinforce with Plastic (FRP)
Bending Radius Dynamic: ≥20 x Cable Diameter Static: ≥10 x Cable Diameter
Tensile Strength* 3000 N
Crush Resistance** 2000 N/10cm
*Depends on the diameter of the cable/customer’s requirement **Could be change as per application/customer’s requirement Note: The diameter could be modified as per customers requirement.

Underwater Cable


Application: This type of cable could be used for underwater
Operating Temperature: -40°C~+70°C
Strength member diameter: 1mm x 28-38nos. (Could be modified as per application)
Structure Parameter
Fiber Count 2-72
Fiber per tube Max. 12 nos fiber per tube
Loose tube material Polybutelene Terephthalate (PBT)
Filling component in the loss tube Thixotropic Jelly
Suspension Wire Stranded galvanized steel wire
Outer Sheath Black PE
Strength member Material Non-metallic strength member Fiberglass Reinforce with Plastic (FRP)
Bending Radius Dynamic: ≥30 x Cable Diameter Static: ≥15 x Cable Diameter
Tensile Strength* 20000 N
Crush Resistance** 5000 N/10cm
*Depends on the diameter of the cable/customer’s requirement
**Could be change as per application/customer’s requirement
Note: The diameter could be modified as per customers requirement.

Center-tube Blowing Microduct Cable


Application: This type of cable could be used for duct
Operating Temperature: -10°C~+70°C
Strength member diameter: 1mm x 28-38nos. (Could be modified as per application)
Structure Parameter
Fiber Count 1-12
Fiber per tube Max. 12 nos fiber per tube
Loose tube material Polybutelene Terephthalate (PBT)
Filling component in the loss tube Thixotropic Jelly
Outer Sheath Black PE
Bending Radius Dynamic: ≥20 x Cable Diameter Static: ≥10 x Cable Diameter
Note: The diameter could be modified as per customers requirement.

Color Coding of the Optical Fiber and Loose Tube

No. of Fiber 1 2 3 4 5 6
Color of Fiber Blue Orange Green Brown Grey White
No. of Fiber 7 8 9 10 11 12
Color of Fiber Red Black Yellow Violet Pink Aqua

Test Conducted for LiGRT Optical Fiber Cable

Sl No Item Test Standard
1 Tensile Test IEC-60794-1-E1
2 Crush Test IEC-60794-1-E3
3 Impact test IEC-60794-1-E4
4 Repeated Bending IEC-60794-1-E6
5 Torsion Test IEC-60794-1-E7
6 Temperature Cycling Test IEC-60794-1-F1
7 Water Penetration Test IEC-60794-1-F5
8 Drip Test IEC-60794-1-E14

Cable Packing and Drum Marking

The cable is rounded on a non-returnable wooden drum. Both ends of cable are securely fastened to drum and sealed with a shrinkable cap to prevent ingress of moisture. The following information shall be marked on the outer sheath of the cable as an interval of about 1 meter.
- Cable type and number of optical fibers
- Brand name
- Month and Year of Manufacturer
- Cable Length


Drum marking, each side of every wooden drum shall be permanently marked in a minimum of 3 cm high lettering with followings:
- Brand name and logo
- Cable Length
- Cable type and number of fibers
- Roll way
- Gross and net weight