FBT Single mode Dual Window Fiber Couplers are used to distribute optical signals to two output fibers. We offer various types of single mode FBT coupler including standard couplers, polarization independent couplers, wavelength independent couplers and wavelength flattened couplers. These FBT couplers are highly stable. They have low insertion loss, low polarization sensitivity and excellent uniformity.
Features
Low Excess Loss
Various Coupling Ratios
Wide Pass Band
High Stability and Reliability
Different splitting ratio at customized requirement
Cable length can be as per your requirement
Applications
FTTX (FTTP, FTTH, FTTN, FTTC)
Passive Optical Networks (PON)
Local Area Networks (LAN)
CATV Systems
Optical communication systems
Specifications
Single mode Dual Window FBT Couplers | |||
Grade Parameter | P | A | |
Operating wavelength (nm) | 1310, 1550, others on request | ||
Operating bandwidth (nm) | ±20 | ||
Typical excess loss (dB) | 0.07 | 0.10 | |
Insertion loss (dB) | 50/50 | ≤3.4 | ≤3.6 |
40/60 | ≤4.4/2.6 | ≤4.7/2.8 | |
30/70 | ≤5.7/1.9 | ≤6.0/2.0 | |
20/80 | ≤7.6/1.2 | ≤8.0/1.3 | |
10/90 | ≤11.0/0.65 | ≤11.5/0.8 | |
5/95 | ≤14.2/0.4 | ≤14.8/0.5 | |
3/97 | ≤16.7/0.3 | ≤17.2/0.4 | |
2/98 | ≤18.5/0.25 | ≤19.0/0.35 | |
1/99 | ≤21.5/0.2 | ≤22.0/0.3 | |
PDL (dB) | ≤0.10 | ≤0.15 | |
Directivity (dB) | ≥55 | ||
Operating temperature (℃) | -40 ~ +85 |
Packing Information
Configuration | 1×2 or 2×2 |
Fiber lead length | 1 meter, others on request |
Package A: 3mm x 54mm stainless steel tube | Pigtail type: 250m bare fiber or 900m loose tube |
Package B: 3mm x 60mm stainless steel tube | Pigtail type: 250m bare fiber or 900m loose tube |
Package C: 90mm x 20mm x 9.9mm ABS case | Pigtail type: 900m/2mm/3mm loose tube |