2000/1550nm Single Mode Filter WDM
The 2000/1550nm SM Filter Wavelength Division Multiplexer is based on environmentally stable thin-film filter technology. The devices combine or separate light at different wavelength in a wide wavelength range. They offer very low insertion loss, low polarization dependence, high isolation and excellent environmental stability. High power handling capability can be achieved through unique pigtail processing and high quality AR coating. These components have been extensively used in EDFAs, Raman amplifiers, WDM networks and fiber optical instruments.
| Features | Applications |
| · Low Insertion Loss
· Low Polarization Dependent Loss · High Isolation · High stability & Reliability |
· EDFA
· Testing Instrumentations · Fiber Laser · WDM System |
Performance Specifications
| Parameter | Unit | Values | |
| Pass band Wavelength | nm | 1950~2050 | |
| Min. Isolation at 23℃ | dB | 25(Typ.30) | |
| Max. Insertion Loss at 23℃ | dB | 0.8 (Typ.0.6) | |
| Reflection band Wavelength | nm | 1520~1580 | |
| Max. Insertion Loss at 23℃ | dB | 0.8 | 1.0 |
| Min. Isolation at 23℃ | dB | 12(Typ.15) | |
| Max. Polarization Dependent Loss | dB | 0.2(Typ. 0.1) | |
| Min. Return Loss | dB | 50 | |
| Max. Optical Power(CW) | mW | 500 | |
| Max. Thermal Stability | dB/℃ | 0.005 over -5 °C to +70 °C | |
| Fiber Type | – | SMF-28(all ports) or SM1950 fiber(all ports) | SMF-28e fiber on R port,
SM1950 fiber on C & P port |
| Operating Temperature | ℃ | -5~+70 | |
| Storage Temperature | ℃ | -40~+85 | |
1.Above specification are for device without connector, and may change without notice.
2.IL is 0.3 dB higher and RL is 5 dB lower for each connector added.
3.The pass optical power is 2 W only for connector added.
- For high power applications, we will use heat sink package, contact DK Photonics for details.
Package Dimension
Order information P/N: FWDM-1X2-①-②-③-④-⑤-⑥
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 |
| Wavelength | Power Handling | Fiber Type | Pigtails Diameter | Fiber Length | Connector |
| 2055: 2000nm pass/1550nm reflect | S:<0.3W
L:<0.7W 1:1W 2:2W |
1: SMF-28e for all ports
2: SM1950 for all ports 3: SMF-28 for R,SM1950 for C & P port |
25:250μm bare fiber
90:900μm Loose Tube XX: Others |
05:0.5m
08:0.8m 10:1.0m XX: Others |
00:None
FP: FC/PC FA: FC/APC SP: SC/PC SA: SC/APC LP: LC/PC LA: LC/APC XX: Others |
Part Number Example: PMFWDM-2055-S-2-25-10-00
Description: 2000/1550nm SM Filter WDM – 0.3W,2000nm pass/1550nm reflect, SM1950 for all ports, with bare fiber, 1.0 fiber length, and no connector at all ports.
Ordering Information For Custom Parts
If you need to customize other specifications, please provide detailed description for your requirement.
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