The fiber complie with or exceed the technical specifications in ITU-T G.657.A1/A2/B2. Feature: 1. Minimum bend radius 7.5mm, superior anti-bending property; 2. Fully compatible with G.652 single-mode fiber. Full band (1260～1626nm) transmission; 3. Low PMD for high bit-rate and long distance transmission. Extremely low micro-bending attenuation, applicable for all optical cable types including ribbons; 4. High anti-fatigue parameter ensures service life under small bending radius.
GL FIBER’s FPV Drone Fiber Optic Spool is a high-performance ultra-micro optical tether system for UAVs, FPV drones, robotics, inspections, and long-distance interference-free communications. With G657A2 bend-insensitive fiber available in ultra-micro 0.20mm, 0.25mm, 0.27mm, 0.30mm diameter, delivers a high-performance ultra-low-loss long-distance jammable-free transmission system solution from 1 km to 50 km. For long-range FPV drone missions, industrial inspection drones, tunnel/pipeline robotics, or high-EMI environments, the GL FIBER optical fiber spool offers reliable HD video + control jammable-free performance.
Key Features：
• Ultra-Micro Fiber Diameter (0.28–0.40 mm)
• FPV / UAV / Robotics ready
• Portable weight
• Minimal drag on flight
• Suitable for high-speed HD digital & analog
• Suitable for long-distance FPV tether operations
Structural Options：
1. Resin-Coated Micro Fiber (0.28 mm)
2. Clear-resin buffer protective coating on the fiber
3. Optimum bending performance
4. Optimum flexibility during high-speed drone operation
5. Best for ultra-lightweight FPV/UAV missions
Full Length Range:
Available standard lengths for the spool:
1 km / 2 km / 3 km / 5 km / 10 km / 15 km / 20 km / 25 km / 30 km / 35 km / 40 km / 45 km / 50 km
Best suitable for:
• Long-Range FPV Drone Missions
• Police surveillance drones
• Tunnel/Bridge Industrial Inspection
• Last Response Emergency Communication Units
• High-EMI / strong RF environment
• UAV tethered missions
Excellent Optical Performance:
Fiber Type: G657A2 bend-insensitive fiber
Excellent optical performance for long-distance missions:
| Parameter | Performance |
| Attenuation @ 1310 nm | ≤ 0.35 dB/km |
| Attenuation @ 1550 nm | ≤ 0.25 dB/km |
GL FIBER® provides the whole series of SMF products that meet and even excel the requirements of standards on performance indicators. Due to the high stability, these products effectively meet the demand for high speed, large capacity, long distance and small bending radius necessary for signal transmission in different applications.
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Brand
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Model | Diameter | Length | Packing |
| GL FIBER | G657A2 | 200um/250um/270um | 50.4KM/60.4KM | Plastic drum |
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Single Mode G657A2 Fiber Specification
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|
Attributes |
specification | ||
| Dimensional Specifications | Cladding Diameter | 125.0±0.7 um | |
| Cladding Non-Circularity | ≤1% | ||
| Coating Diameter | 245±10 um | ||
| Coating-Cladding Concentricity | ≤12 um | ||
| Coating Non-Circularity | ≤6 % | ||
| Core-Clad Concentricity | ≤0.5 um | ||
| Fiber Curl (radius) | ≥4 m | ||
| Delivery Length | 2.05-50.4( km/reel) | ||
| Optical Specifications | Mode-Field Diameter (MFD) | @1310nm | 8.6±0.4 um |
| @1550nm | 9.7±0.6 um | ||
| Attenuation | @1310nm | ≤0.35 dB / km | |
| @1383nm | ≤0.35 dB / km | ||
| @1550nm | ≤0.21 dB / km | ||
| @1625nm | ≤0.23dB / km | ||
| Attenuation VS. Wavelength | @1285-1330nm, Ref. λ@1310nm | ≤0.04 dB / km | |
| @1525-1575nm, Ref. λ@1550nm | ≤0.03 dB / km | ||
| Point Discontinuity | @1310nm | ≤0.05 dB | |
| Optical Specifications | @1550nm | ≤0.05 dB | |
| Polarization Mode Dispersion（PMD） | Maximum Individual Fiber PMD | ≤0.2 ps/(km1/2) | |
| PMD Link Design Value （M=20, Q=0.01%） | ≤0.1 ps/(km1/2) | ||
| Typical Value | 0.04 ps/(km1/2) | ||
| Zero Dispersion Wavelength(λ0) | 1312±12 nm | ||
| Zero Dispersion Slope(S0) | ≤0.092 ps/(nm2.km) | ||
| Dispersion | 1550nm | ≤18 ps/(nm.km) | |
| 1625nm | ≤22 ps/(nm.km) | ||
| Cable Cutoff Wavelength λcc | ≤1260 nm | ||
| Mechanical Specifications | Proof Test | ≥9.0N, ≥1.0%, ≥100Kpsi | |
| Dynamic stress corrosion susceptibility parameters Nd | ≥20 | ||
| Coating Strip Force | Average | 1.5 N | |
| Peak | 1.3-8.9 N | ||
| Macrobending Loss (dB) | 1 turn, Φ15mm@1550nm&1625nm | ≤0.5 dB, ≤1 dB | |
| 1 turn, Φ20mm@1550nm&1625nm | ≤0.1 dB, ≤0.2 dB | ||
| 10turns, Φ30mm@1550nm&1625nm | ≤0.03 dB, ≤0.1 dB | ||
| Environmental Specifications | Temperature Dependence（-60℃ to 85℃ ,@1310nm&1550nm&1625nm） | ≤0.05 dB / km | |
| Water Immersion（23±2℃, 30 days@1310nm&1550nm&1625nm） | ≤0.05 dB / km | ||
| Dry Heat Soak（85±2℃, 30 days@1310nm&1550nm&1625nm） | ≤0.05 dB / km | ||
| Damp Heat（85±2℃, at 85%RH, 30 days @1310nm&1550nm&1625nm） | ≤0.05 dB / km | ||
Warranty: The company produces and tests optical fiber independently, all qualified fibers meet the requirements of technical specifications. Packaging and storageg: 1. Ensure no foreign matter on the reel and fiber surface, wrap it with film and cover, and label fiber coding on the reel and cover respectively. 2. The packaged optical fiber is stored at a constant temperature of 25 ℃ in a light-proof warehouse. The products are fixed in the carton when they are shipped out of the warehouse. The carton number and fiber coding information are attached to the carton, and the electronic test report is attached to each shipment. 
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