- Sketch
- Structure
- structural parameters
- Cable performance
- Application
- Fiber properties
- Color-coded
- Other information

The Double-Layer Armored High-Temperature Sensing Fiber Optic Cable for Oilfield Applications, capable of withstanding temperatures up to 385°C, offers several advantages:
1. Extreme temperature resistance: Designed to operate in high-temperature environments up to 385°C, this fiber optic cable can endure the intense heat commonly found in oilfield operations. It ensures reliable communication and sensing capabilities in extreme conditions.
2. Double-layer armored protection: The dual-layer armor provides enhanced protection against mechanical stress, abrasion, and moisture, making the cable highly durable and suitable for harsh oilfield environments. It ensures the longevity and reliability of the communication and sensing system.
3. Sensing capabilities: In addition to its communication function, this fiber optic cable features sensing capabilities that allow for monitoring and data collection within the oilfield. It can be utilized for real-time temperature, pressure, and vibration sensing, providing valuable information for operational efficiency and safety.
4. Resilience to oil and chemicals: The cable’s materials are resistant to oil, chemicals, and other corrosive substances typically present in oilfield environments. This resistance prevents damage and ensures consistent performance over time, reducing maintenance needs and downtime.
5. Enhanced safety and reliability: The high-temperature sensing fiber optic cable improves operational safety by providing accurate and timely data for monitoring critical parameters. Its reliability in extreme conditions minimizes the risk of communication failures or sensor malfunctions, enhancing the overall safety of oilfield operations.
6. Customizable solutions: Manufacturers may offer customizable options for the cable’s length, connectors, and sensing capabilities to meet specific oilfield requirements. This flexibility allows for tailored solutions for different applications within the oil and gas industry.
Note: The outer sheath material, color and printing information of the optical cable can be customized according to the requirements of customers

The structure from inside to outside is:
Optical fiber:0.25mm bare optical fiber×1~12 cores;
Seamless steel pipe:OD 2.1mm;
Inner layer twisted steel wire:12 pieces;
Outer layer twisted steel wire:12 pieces, OD 6.0mm.
| Optical cable model | Unit | DJ-GC-GTGJ-2S | |
| Outer diameter of steel pipe | mm | 2.10±0.10 | |
| Optical cable outer diameter | mm | 6.00±0.10 | |
| Twisted steel wire material | / | Stranded steel wire | |
| Operating temperature | ℃ | -190~+385 | |
| Optical cable weight | Kg/km | 120 | |
![]() | anti-rat bite | √ | ![]() | anti-twist | √ |
![]() | oil field | √ | ![]() | Tensile | √ |
![]() | wind energy | √ | ![]() | the pipeline | √ |
![]() | world | √ | ![]() | direct burial | |
![]() | oil tank | ![]() | Overhead | ||
![]() | subway, tunnel | √ | ![]() | water blocking | |
![]() | coal mine | ![]() | fire protection | √ |
| ITEMS | TEST WAVELENGTH | REQUIRMENTS |
| Attenuation | @1310nm | ≤0.360 dB/km |
| @1550nm | ≤0.220 dB/km | |
| Dispersion | @1288nm~1339nm | ≤3.5 ps/(nm.km) |
| @1550nm | ≤18.0 ps/(nm.km) | |
| Zero dispersion wavelength | 1300-1324 nm | |
| Zero dispersion slope | ≤0.091 ps/(nm2.km) | |
| MFD | @1310nm | 9.2±0.4 mm |
| @1550nm | 10.4±0.5 mm | |
| Cable cutoff wavelength λcc(nm) | ≤1260 nm | |
| Link polarization dispersion (PMDQ) | ≤0.1ps/Ökm | |
| Geometrical characteristics | ||
| Cladding diameter | 125mm±0.7mm | |
| Cladding out of roundness | ≤1.0% | |
| Core/cladding concentricity error | ≤0.6mm | |

| 聯絡方式/CONTACT | |||
| 手機/微信號 Mobile phone/WeChat ID | 177 6800 0800 竇先生 業務總監 / Mr.Dou Business Director | ||
| 180 1075 7228 李女士 業務經理 / Ms.li Business Manager | |||
| What’s app | +86 180 1075 7228 | Skype | +86 180 1075 7228 |
| Linkedln | DJ Optical Technology | Line Id | djoptical2024 |
| 信箱/Email | djmt@djopticals.com | 電話/Phone No. | 0512-6655-8801 |














