Doped Fiber Pump Combiner, also call active pump combiner, is built 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.
Doped Fiber Pump Combiner, also call active pump combiner, is built 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.
| 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:
| 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.
Download Drawing in PDF:
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 |
30:1030nm
64:1064nm 15:1550nm 2000:2000nm |
05:5W
10:10W 25:25W 50:50W XX: Other |
XXX (fiber code) | XXX (fiber code) | XXX (fiber code) | 20:2.0m
30:3.0m 40:4.0m
|
Part Number Example: DFPSC-21-30-30-105/125/22-15/130/08D-D15/130/08D-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, passive 15/130µm, 0.08/046NA input signal fiber, doped 15/130µm, 0.08/046NA output fiber, 1.0m input fiber length, 3.0m output doped fiber length.
Ordering Information for Custom Parts
If you need to customize other specifications, please provide detailed description for your requirement.
DownloadDatasheet in PDF