Views: 0 Author: Site Editor Publish Time: 2024-08-26 Origin: Site
FBT Coupler: An Essential Component in Fiber Optic Networks
Introduction
Fiber optic networks have become the backbone of modern communication, enabling fast and reliable data transmission across vast distances. A critical component in these networks is the Fiber Bragg Grating (FBT) coupler, which plays a key role in managing the distribution and splitting of optical signals.
What is an FBT Coupler?
FBT couplers use molten cone technology to fuse two or more fibers together. This process is precisely controlled on a cone machine, ensuring the splitting ratio meets the specific requirements. One fiber serves as the input, while the other fibers provide multiple output channels, making FBT couplers indispensable in optical fiber distribution systems.
Key Features
Low Additional Loss: Minimizes signal degradation during transmission.
Low Polarization Dependent Loss: Maintains signal quality irrespective of polarization changes.
Excellent Stability: Offers consistent performance under various environmental conditions.
Double and Triple Operating Windows: Supports multiple wavelengths, enhancing versatility.
Optional Splitting Ratio: Allows customization to meet specific network needs.
Technical Specifications
Operating Wavelength (nm): 1310 or 1550
Operating Bandwidth (nm): ±15
Maximum Insertion Loss (IL):
1/99: ≤22/0.4
2/98: ≤18.5/0.45
3/97: ≤16.7/0.5
5/95: ≤14.8/0.8
10/90: ≤11.6/1.0
20/80: ≤8.0/1.5
30/70: ≤5.75/2.1
40/60: ≤4.6/2.8
50/50: ≤3.6
Polarization Dependent Loss (PDL) (dB): ≤0.20
Extinction Ratio (dB):
CR > 5%: 18
5% ≥ CR > 1%: 16
Return Loss (dB): ≥55
Directivity (dB): ≥55
Operating Temperature (°C): -5~70
Storage Temperature (°C): -40~85
Conclusion
FBT couplers are critical in managing and optimizing optical signals in fiber networks. Their ability to provide stable, low-loss signal splitting makes them essential in various applications, from telecommunications to data centers. With customizable options and robust performance characteristics, FBT couplers continue to be a vital component in ensuring efficient and reliable fiber optic communication.
