DK Photonics’s 2050/1570nm WDM/Tap Coupler/Isolator Hybrid Combination is a combination of a wavelength division multiplexer, tap coupler and an isolator in a compact package. All input and output fibers are polarization independent. This product has an extremely low insertion loss, a very stable tap-coupling ratio, high isolation, and hight return loss. This product offers integrated solution to fiber laser application by combining more functions into a very compact package.
DK Photonics’s 2050/1570nm WDM/Tap Coupler/Isolator Hybrid Combination is a combination of a wavelength division multiplexer, tap coupler and an isolator in a compact package. All input and output fibers are polarization independent. This product has an extremely low insertion loss, a very stable tap-coupling ratio, high isolation, and hight return loss. This product offers integrated solution to fiber laser application by combining more functions into a very compact package.
| Parameter | Unit | Values | ||
| Stage of Isolator | – | Single Stage | Dual Stage | |
| Signal Central Wavelength (λ c) | nm | 1940, 2000,2050 | ||
| Max. Signal Excess Loss, λc ± 20 nm, @ 23℃ | nm | 2.0 | 2.3 | |
| Min. Signal Isolation, λ c± 50 nm, @ 23℃(Isolator) | nm | 16 | 35 | |
| Tap Ratio | % | 1~50 | ||
| Tap Channel Typ. Loss | dB | 1%(20~22.5), 5%(14 ~ 16.5) | ||
| Min. Isolation (WDM) | Signal Channel | dB | 25 | |
| Pump Channel | dB | 12 | ||
| Pump Wavelength Range | nm | 1520~1590 | ||
| Max. Insertion Loss (Pump to Common) | dB | 1.0 | ||
| Max. PDL | dB | 0.2 | ||
| Min. Return Loss | dB | 50 | ||
| Max. Power Handling (CW) | W | 0.5, 2, 3, 10 | ||
| Max. Peak Power for ns Pulse if any | kW | 1, 5,10 | ||
| Max. Tensile Load | N | ≤5 | ||
| Fiber Type | Pump port | – | SMF-28e fiber or specified | |
| Common Signal and tap port | – | SM1950 fiber or specified | ||
| Operating Temperature | ℃ | -5 to +70 | ||
| Storage Temperature | ℃ | -40 to +85 | ||
| Package Dimensions | mm | Ø5.5 x L38(<5W), 60x12x8(>5W) | ||
PS: For forward pump, signal wavelength is polarization independent. For backward pump, signal wavelength is Polarization dependent.
P/N:WTIH-①-②-③-④-⑤-⑥-⑦-⑧-⑨
When you inquire, please provide the correct P/N number according to our ordering information and attach the appropriate description would be better. If need any connector, we do not recommend choosing a 250μm bare fiber pigtail.
| ① | ② | ③ | ④ | ⑤ | ⑥ | ⑦ | ⑧ |
| Wavelength | Stage of Isolator | Optical Power | Tap Ratio | Pump Configuration | Pigtail Diameter | Fiber Length | Connector |
| 5057:2050 signal/1570 pump
XX: other |
S: Single Stage
U: Dual Stage |
L:<0.5W
1:1W 3:3W 5:5W 10:10W |
01:1% Tap
02:2% Tap 05:5% Tap |
F: Forward Pump
B: Backward Pump |
25:250μm bare fiber
90:900μm Loose Fiber XX: Others |
05:0.5m
10:1.0m 15:1.5m XX: Others |
00: None
FP: FC/PC FA: FC/APC SA: SC/APC LA: LC/APC XX: Others |
Part Number Example: WTIH-5057-S-L-01-F-90-10-FA
Description: SM WDM/Tap Coupler/Isolator Hybrid Combination, 2050nm signal/1570nm pump, single stage isolator, 1% tap, forward pump, SMF-28e fiber at 1570nm port, other with SM1950 fiber, with 0.9mm OD loose tube, 1.0m fiber length, and FC/APC connectors at all ports.
Ordering Information for Custom Parts
If you need to customize other specifications, please provide detailed description for your requirement.
DownloadDatasheet in PDF