| Model | TW13/14/15nm-1×2-0.9mm-L1 | ||||
|---|---|---|---|---|---|
| Wavelength | 1310/1490/1550nm | Bandwidth | ±40 | ||
| Specifications | Required Ratio % | I L (dB) 1310nm | I L (dB) 1490nm | I L (dB) 1550nm | PDL (dB) |
| OUT1 (Blue): 15% | ≤8.80 | ≤8.80 | ≤8.80 | 0.02 | |
| OUT2 (Orange): 85% | ≤0.85 | ≤0.85 | ≤0.85 | 0.03 | |
| QTY | 2 NOS | Date | Dec, 2017 | ||
FOBER FBT Coupler (85/15 Steel Tube Type) – High-Efficiency Optical Power Splitter for Fiber Networks
The FOBER FBT Coupler (85/15 Steel Tube Type) is a premium-grade passive optical component designed for reliable and accurate optical signal splitting. With an 85:15 splitting ratio, this coupler is ideal for applications that require the majority of the optical signal to continue along the primary path while diverting a smaller portion for monitoring or secondary use. Constructed using Fused Biconical Taper (FBT) technology, this coupler guarantees dependable performance across a wide range of fiber optic networks.
Enclosed in a durable steel tube casing, this device offers excellent protection and longevity, making it suitable for both indoor and outdoor environments. It is especially useful in telecommunications, FTTH (Fiber to the Home), CATV systems, and optical testing setups where signal integrity, low insertion loss, and environmental durability are critical.
Key Features
85/15 Splitting Ratio
Distributes 85% of the optical signal to the main output and 15% to the secondary. This makes it perfect for signal monitoring, testing, or secondary path delivery without significantly impacting the main data flow.
Fused Biconical Taper (FBT) Technology
Developed using precision FBT manufacturing techniques that taper and fuse two optical fibers together under controlled conditions to ensure stable optical splitting.
Steel Tube Encapsulation
Offers superior mechanical protection against stress, vibration, and environmental exposure, ensuring long-term reliability in harsh operating conditions.
Single Mode Fiber Compatibility
Designed for single-mode fiber networks, especially compatible with ITU-T G.652D or G.657A standard optical fibers.
Low Insertion and Excess Loss
Guarantees optimal performance with minimal power loss and high directivity, which maintains network efficiency.
High Reliability in Wide Temperature Range
Withstands extreme temperatures ranging from -40°C to +85°C, suitable for both indoor racks and outdoor field installations.
Technical Specifications
| Parameter | Specification |
|---|---|
| Splitting Ratio | 85% / 15% |
| Wavelength Range | 1260 nm – 1650 nm |
| Insertion Loss (Typical) | ≤ 0.35 dB (Main Port), ≤ 8.0 dB (Branch) |
| Excess Loss | ≤ 0.2 dB |
| Return Loss | ≥ 50 dB |
| Directivity | ≥ 55 dB |
| Fiber Type | Single Mode (G.652D / G.657A) |
| Connector Type | SC/APC, SC/UPC, LC/APC, LC/UPC (Optional) |
| Package Style | Steel Tube Encapsulated |
| Operating Temperature | -40°C to +85°C |
| Storage Temperature | -40°C to +85°C |
Applications
The FOBER 85/15 Steel Tube Type FBT Coupler is a vital component in various fiber optic communication systems. It is best suited for:
FTTH (Fiber-to-the-Home) Installations
Passive Optical Networks (PONs)
Signal Testing and Monitoring
CATV Networks
Data Centers and Enterprise Fiber Systems
Optical Signal Tapping and Distribution
This coupler ensures high precision and reliability when a portion of the signal must be tapped for monitoring or rerouted to a secondary device or line.
Benefits
✅ Precision Signal Management – Maintains optimal signal flow while diverting a portion for analysis or backup.
✅ Durability with Steel Tube Design – Mechanically robust and resistant to environmental stress.
✅ Low Loss, High Return – Designed to reduce signal loss and back reflection, preserving the quality of transmission.
✅ Versatile Use – Ideal for access networks, monitoring systems, and test environments.
✅ Plug-and-Play Integration – Easily integrates into new or existing fiber network infrastructure with minimal installation requirements.
Why Choose FOBER FBT Coupler?
FOBER is a trusted name in fiber optic components, known for delivering products that exceed industry standards in performance, durability, and precision. The 85/15 FBT coupler embodies the brand’s dedication to quality engineering and optical reliability, ensuring stable network performance over time.
Every coupler undergoes rigorous testing for optical loss, uniformity, and environmental stress tolerance. Whether you are a telecom provider, a network integrator, or a systems engineer, the FOBER FBT Coupler delivers the results and confidence you need for mission-critical deployments.
Conclusion
The FOBER FBT Coupler (85/15 Steel Tube Type) is an excellent solution for optical signal distribution where monitoring or signal diversion is essential without interrupting core operations. Its rugged design, low signal loss, and high directivity make it suitable for a wide range of fiber optic systems. Reliable, efficient, and ready for real-world challenges—this coupler is a must-have for professional fiber network deployments.
