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2023-12-18
Fiber optical communication system
Fiber optical sensors
CATV System
LAN System
WAN System
SC LC FC Fused Biconic Taper (FBT) coupler, also be called FBT splitter, based on the traditional technology, it is to bundle together 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
Low Insertion loss
Low PDL
Compact Design
Good channel-to-channel uniformity
Wide Operating Wavelength:1310/1490/1550nm
High Reliability and Stability
Performance Specifications
Single Standard Couplers | ||
Grade | P Grade | A Grade |
Coupling Ratio（%） | 50/50 | 50/50 |
Excess Loss (Typical)（dB） | 0.07 | 0.1 |
Maximum insertion loss（dB） | 3.4 | 3.5 |
Polarization Sensitivity (dB) | 0.15 | 0.2 |
Operating Wavelength（nm） | 1310,1480,1550 or custom wavelength | |
Single Wideband Couplers | ||
Grade | P Grade | A Grade |
Coupling Ratio（%） | 50/50 | 50/50 |
Excess Loss (Typical)（dB） | 0.07 | 0.1 |
Maximum lnsertion loss（dB） | 3.4 | 3.6 |
Polarization Sensitivity (dB) | 0.15 | 0.2 |
Operating Wavelength（nm） | 1310±40,1550±40,or custom wavelength | |
Coupling Ratio（%） | 1~50 | |
Directivity (dB) | ≥55 | |
Operating Temperature(℃) | -20~+80 | |
Storage Temperature(℃) | -40~+85 | |
Fiber Type | SMF-28 | |
Fiber Pigtail Length（m） | 1 | |
Port Configuration | 1×2 or 2×2 | |
Dimensions (mm) | Package D,E,F,G | |
Coupling Ratio/insertion Loss Conversion Chart
Coupling Ratio | Insertion Loss | |
P Grade | A Grade | |
40/60 | 4.4/2.5 | 4.6/2.8 |
30/70 | 5.6/1.8 | 6.0/2.0 |
20/80 | 7.4/1.1 | 7.7/1.3 |
10/90 | 10.8/0.6 | 11.6/0.8 |
5/95 | 14.2/0.4 | 14.6/0.5 |
2/98 | 18.5/0.2 | 19.0/0.3 |
1/99 | 21.0/0.2 | 21.5/0.3 |
