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
Optical Fiber
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 |
**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 |
**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 |
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 |
**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 |
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