Fused Biconic Taper (FBT) coupler, also be called FBT splitter, based on the traditional technology, it is to bundle to- gether two or more optical fibers, and then pull the cone machine melt stretching, and real-time monitoring the change of the ratio, spectral ratio requirements after melt stretching, one side retain a single fiber (the rest of the cut) as input, the other end is a multi-channel output.
As one of the key components for GPON FTTx networks, optical splitters can be placed in the Central Office or in one of the distribution points (outdoor or indoor) because the FBT coupler are highly stable for multiport optical signal splitting with low insertion loss. FBT couplers are designed for power splitting and tapping in telecommunication equipment, CATV network, and test equipment
Features:
Low Excess Loss
Uniform Power Splitting
Rugged Package Excellent
Environmental & Mechanical Stability
Application:
FTTX (FTTP, FTTH, FTTN, FTTC)
Passive Optical Networks (PON)
Local Area Networks (LAN)
CATV Systems Amplifying,
Monitoring System
Specification:
Parameter | Multimode Standard Fiber Couplers | |
Coupling Ratio（%） | 50/50 | |
Grade | P Grade | A Grade |
Excess Loss (Typical)（dB） | 0.7 | 1.0 |
Max.lnsertion Loss（dB） | 4.2 | 4.5 |
Uniformity (Max.)(dB) | 0.6 | 0.8 |
Directivity(Min.)(dB) | 35 | |
Operating Wavelength（nm） | 800-1600 | |
Central Wavelength (nm) | 850 or 1310 or 1550 | |
Operating Temperature(℃) | -20~+85 | |
Fiber Type | Corning multimode 50/125, 62.5/125 | |
Fiber Pigtail Length（m） | 1 m or custom length | |
Port Configuration | 1×2 or 2×2 | |
Dimensions (mm) | Package D,E,G | |
Coupling Ratio/insertion Loss Conversion Chart
Coupling Ratio | Insertion Loss | |
Coupling Ratio（%） | Premium Grade | A Grade |
40/60 | 5.2/3.3 | 5.6/3.7 |
30/70 | 6.5/2.6 | 7.0/3.0 |
20/80 | 8.4/2.0 | 8.8/2.5 |
10/90 | 11.8/1.5 | 12.3/2.0 |
