2000/1550nm Polarization Maintaining Filter WDM
The 2000/1550nm Polarization Maintaining Filter WDM multiplexes PM signals and maintains the output polarization with high extinction ratio using advanced micro-optic filter technology. All input and output fibers are polarization maintaining. It utilizes advanced filter technology to yield wide-band, low insertion loss, high polarization extinction, high return loss in a compact package. This product can also be used to multiplex other wavelengths. It can also be provided with a PM isolator integrated in the same package. They are ideal for polarization maintaining fiber amplifiers, fiber lasers, and high speed communication system and instrumentation applications.
If you do not see a standard Polarization Maintaining Filter WDM that meets your needs, we welcome the opportunity to review your desired specification and quote a custom Polarization Maintaining Filter WDM. Custom pigtail fibers can be accommodated, as well as custom operational Pump & Signal wavelengths, and power handling requirements.DK Photonics can respond to custom requirements with short lead times.
| Features | Applications |
| · Low Insertion Loss
· High Extinction Ratio · High Isolation · High stability & Reliability |
· System Monitoring
· Transmitters and Fiber Lasers · Fiber Optical Amplifier · Fiber Optic Instruments |
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) | |
| Max. Extinction Ratio at 23℃ | dB | 20 | |
| Reflection band Wavelength | nm | 1520~1580 | |
| Max. Insertion Loss at 23℃ | dB | 0.8 | 1.0 |
| Min. Isolation at 23℃ | dB | 12(Typ.15) | |
| Min. Extinction Ratio | dB | 20 | |
| Min. Return Loss | dB | 50 | |
| Max. Optical Power(CW) | W | 0.3, 0.7, 1, 2, 3, 5 | |
| Max. Thermal Stability | dB/℃ | 0.005 over -5 °C to +70 °C | |
| Fiber Type | – | PM1550 (all ports) or PM1950 fiber(all ports) or
SMF-28 for R, PM1550 for C & P port |
PM1550 fiber on R port,PM1950 fiber on C & P port |
| Operating Temperature | ℃ | -5~+70 | |
| Storage Temperature | ℃ | -40~+85 | |
- Above specifications are for device without connector, and the PM WDM device is both axis working.
- For devices with connectors, IL will be 0.3dB higher, RL will be 5dB lower and ER will be 2dB lower. Power transmit through the connector less than 2W.The default connector key is aligned to slow axis.
Package Dimension
Order information P/N: PMFWDM-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: PM1550 for all ports
2: PM1950 for all ports 3: SMF-28 for R, PM1550 for C & P port 4: PM1550 fiber on R, PM1950 fiber on 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-1-25-10-00
Description: 2000/1550nm Polarization Maintaining Filter WDM – 0.3W,2000nm pass/1550nm reflect, PM1550 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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