Dawnergy Technologies(Shanghai) Co., Ltd.
Help people better connected through fiber
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Dawnergy’s FBT fiber couplers are fused fiber branching devices that split off a portion of light to allow for optical monitoring and feedback. These devices are used extensively in fiber amplifier power control. They are also utilized in transmission equipment for performance monitoring and feedback control.
Features
Applications
Specifications
| Parameters | Specifications | ||
| Type | Single Window | Dual Window | |
| Center Wavelength (nm) | 1310 or 1550 | 1310 and 1550 | |
| Bandwidth (nm) | ±40 | ||
| Type | 1×2 | ||
| Maximum Insertion Loss (dB) | 50/50 | ≤3.4 | |
| 40/60 | ≤4.4/2.6 | ||
| 30/70 | ≤5.7/1.9 | ||
| 20/80 | ≤7.6/1.3 | ||
| 10/90 | ≤10.7/0.7 | ||
| 5/95 | ≤13.8/0.4 | ||
| 3/97 | ≤16.5/0.3 | ||
| 2/98 | ≤18.1/0.3 | ||
| 1/99 | ≤21.2/0.2 | ||
| Typical Excess Loss (dB) | ≤0.1 | ||
| PDL (dB ) | ≤0.1 | ||
| Directivity (dB) | ≥50 | ||
| Operating Temperature (°C ) | -10 ~ +70 | ||
| Storage Temperature (°C ) | -40 ~ +85 | ||
| Package Dimensions (mm) |
| ||
Ps: Above specifications are for devices without connector
Add an additional 0.2dB loss per connector 
Ordering Information
Example:
| PN | Name | Description |
| 2-P-3-1-0-3-2-50-6-1M | FBT Fiber Coupler | 1x2; Dual window, 1310/1550nm; Package size: 90x20x10mm;2.0mm cable; 50/50; LC/UPC connector |