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GX-GG-2B1-2A1a-4.0 Optical Fiber Logging Cable - 2 SM + 2 MM, 4.0mm | China Suppliers & Factory
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Construction
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| Fiber optic Unit Tube | 2.20 mm | 0.0866″ |
| Outer Stainless Steel Tube | 3.20 mm | 0.1260″ |
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Physical
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| Cable Diameter | 3.20 mm±0.10 mm | 0.126″± 0.0039″ |
| Cable Weight in Air | 46 kg/km | 31 lbs/kft |
| Temp Rating | 150 ℃ | 300 ℉ |
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Mechanical
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| Cable Breaking Strength | 4 kN | 900 lbs |
| Max. Suggested Working Tension | 2 kN | 450 lbs |
| Min. Shave Diameter | 320 mm | 12.6″ |
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Attenuation
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| Single-mode Fiber Decline@1310nm | 0.40 dB/km | 0.1219 dB/km |
| Single-mode Fiber Decline@1550nm | 0.30 dB/km | 0.0914 dB/km |
| Multi-mode Fiber Decline@850nm | 3.5 dB/km | 1.0668 dB/km |
| Multi-mode Fiber Decline@1300nm | 1.2 dB/km | 0.3658 dB/km |
Frequently Asked Questions
Q
What is the maximum operating temperature of this fiber optic cable?
This fiber optic cable is rated for a maximum operating temperature of 150°C (300°F). This high-temperature tolerance makes it well-suited for demanding environments such as downhole oil and gas applications, industrial process monitoring, and geothermal sensing deployments where conventional cables would fail.
Q
What fiber types are supported in this cable?
This cable supports both single-mode and multi-mode optical fibers. Single-mode fiber operates at 1310 nm and 1550 nm wavelengths, while multi-mode fiber is optimized for 850 nm and 1300 nm wavelengths — providing flexibility across sensing, data transmission, and distributed temperature sensing (DTS) applications.
Q
What is the cable's breaking strength and recommended working tension?
The cable has a rated breaking strength of 4 kN (900 lbs). The maximum suggested working tension is 2 kN (450 lbs) — exactly 50% of the breaking load — providing a generous safety factor for safe installation and long-term deployment in high-tension environments.
Q
What are the attenuation values for single-mode and multi-mode fibers?
Single-mode fiber attenuation is 0.40 dB/km at 1310 nm and 0.30 dB/km at 1550 nm. Multi-mode fiber attenuation is 3.5 dB/km at 850 nm and 1.2 dB/km at 1300 nm. These low attenuation figures ensure reliable signal quality over extended cable lengths in both sensing and communication applications.
Q
Why is the minimum shave diameter specification important?
The minimum shave (sheave) diameter of 320 mm (12.6″) defines the smallest pulley or drum over which the cable can safely travel during deployment or retrieval. Bending the cable tighter than this limit risks micro-bending-induced attenuation in the optical fiber and permanent deformation of the stainless steel armor tube, compromising both optical performance and structural integrity.
Q
What are the key dimensions and weight of this cable?
The cable has an outer diameter of 3.20 mm ± 0.10 mm (0.126″ ± 0.0039″), with the 2.20 mm fiber optic unit tube housed inside a 3.20 mm outer stainless steel tube. The cable weighs 46 kg/km (31 lbs/kft) in air, offering a compact and lightweight form factor well suited for reel-based downhole deployment systems.