Doped Fiber Pump and Signal Combiner (N+1)x1
Doped Fiber Pump Combiner, also call active pump combiner, is build by coupling pump fiber power directly into doped fiber (say Yb-doped, or Er/Yb doped ect), the signal input fiber is passive fiber, and the splice point is put inside combiner. Normally customer splices doped fiber with combiner output passive fiber, which will cause backward scattering. Active combiner makes customer no need to splice again outside combiner and will get very good isolation between backward light and pump lasers.
The structure has 2 advantages compare with normal combiner:
1) Customer only need splice one time with doped fiber at combiner signal side.
2) The coupling region is behind splice point, the isolation (backward signal to pump) is much lower than normal passive combiner, so that protect pump LD burning.
| Features | Applications |
| · High Power Transfer Efficiency
· Low signal insertion loss · Custom Configurations Available |
· Fiber Laser
· Fiber Amplifiers · Fiber instrument |
General Configuration for Doped Fiber Pump Combiner(2+1)x1
| Type | Pump fiber | Input signal | Output fiber(active) | Max.Signal IL | Pump Effi. | Max.Power Handling |
| (2+1)x1 | 105/125 0.15 or 0.22 | 6/125 SC or DC | 6/125 DC | 0.5dB | 90% | 50W/leg |
| (2+1)x1 | 105/125 0.15 or 0.22 | 8/125 SC or DC | 8/125 DC | 0.5dB | 90% | 50W/leg |
| (2+1)x1 | 105/125 0.15 or 0.22 | 10/125 SC or DC | 10/125 DC | 0.5dB | 90% | 50W/leg |
| (2+1)x1 | 105/125 0.15 or 0.22 | 12/125 SC or DC | 12/125DC | 0.5dB | 90% | 50W/leg |
| (2+1)x1 | 105/125 0.15 or 0.22 | 20/125 SC or DC | 20/125 DC | 0.5dB | 90% | 50W/leg |
| (2+1)x1 | 105/125 0.15 or 0.22 | 25/250 SC or DC | 25/250 DC | 0.5dB | 93% | 50W/leg |
| (2+1)x1 | 105/125 0.15 or 0.22 | 30/250 SC or DC | 30/250 DC | 0.5dB | 93% | 50W/leg |
Remark:
- Other configuration and higher power handling can be customized.PM fiber also can be customized.
- All combiners default with bare fiber, 0.8m length of pigtail, please contacts us for special request.
- Output fibers are doped double clad fiber.
Package Information
| Package Type | P1 | P2 | P3 | P4 |
| Dimensions (mm) | Ф4.0×60 | 65x12x7 | 80x12x8 | 100x15x10 |
*Due to ongoing design improvements, the package size is subject to change. According to the different configuration, power handling, and fiber core diameter, we will choose the appropriate package size. Please contact DK Photonics for confirmation.
*Device package must be mounted onto heat sink (active cooling is suggested) with thermal paste for high power.
Order information P/N: DFPSC (DFPMPSC)-A-B-C-D-E-F-G
When you inquire, please provide the correct P/N number according to our ordering information, and attach the appropriate description would be better.
| A | B | C | D | E | F | G |
| Port | Signal Wavelength | Power per Multimode Input | Input Pump Fiber Type | Input signal Fiber Type | Output Fiber Type | Fiber length |
| 21: (2+1)X1
61: (6+1)X1 |
03:1030nm
64:1064nm 55:1550nm 20:2000nm |
05:5W
10:10W 25:25W 50:50W XX: Other |
XXX(fiber name) | XXX(fiber name) | XXX(fiber name) | 20:2.0m
30:3.0m 40:4.0m |
Part Number Example: DFPSC-21-03-30-105/125/022-15/130/008/046-15/130/008/046-10
Description: (2 + 1) x 1 Doped Fiber Pump and Signal Combiner,1030nm signal wavelgnth,30W per pump, 105/125µm, 0.22NA input pump fiber, 15/130µm, 0.08/046NA input signal fiber, doped 15/130µm, 0.08/046NA output fiber, 1.0m fiber length.
Ordering Information for Custom Parts
If you need to customize other specifications, please provide detailed description for your requirement.
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