Description
1550/1310nm 1×2 Filter WDM
1550/1310nm 1×2 Filter WDM is a fiber component built with thin-film filter technology, it can be used to separate or combine 1550nm and 1310nm wavelength signal, it’s widely used in Fiber Laser Systems and Testing Systems, the high power type is available upon request.
| Application: | Features: | ![]() |
| Fiber Laser | Epoxy Free | |
| Testing System | High Isolation | |
| Optical Diffraction System | Low Insertion Loss | |
| Lab And Research | Optical Path Reversibility |
Specification:
| Parameter | Symbol | Value |
Unit |
| Type | P1550 R1310 | nm | |
| Pass Band | λ | 1550 (1460-1620) | nm |
| Reflect Band | λ | 1310 (1260-1360) | nm |
| Max. Insertion Loss @Pass Channel | IL | 0.6 | dB |
| Max. Insertion Loss @Reflect Channel | IL | 0.4 | dB |
| Min. Isolation @Pass Channel | Iso | 30 | dB |
| Min. Isolation @Reflect Channel | Iso | 15 | dB |
| Max. Insertion Loss Temperature Sensitivity | 0.5 | dB | |
| Max. Polarization Dependent Loss | PDL | 0.1 | dB |
| Min. Directivity | 50 | dB | |
| Min. Return Loss | RL | 50 | dB |
| Max. Optical Power (CW) | 500 | mW | |
| Max. Tensil Load | P | 5 | N |
| Fiber Type | SMF-28e fiber | – | |
| Operating Temperature | T | -5~75 | ℃ |
| Storage Temperature | T | -40~85 | ℃ |
| Package Dimension | Φ5.5×L35 | mm |
| Notice: Above specifications are tested at center wavelength without connector in room temperature @23℃. |
| For devices with connectors, IL will be 0.3dB higher, RL will be 5dB lower. |
Drawing:

Ordering Information (Part Number):
| FWDM-WWWW/WWWW-FF-J-LL-CC |
||||
| WWWW/WWWW | FF | J | LL | CC |
| Wavelength | Fiber Type on all Port | Fiber Jacket | Fiber Length | Connector |
| 1550/1310 – 1550nm Pass, 1310nm Reflect | S2 – SMF-28e | B – 250um Bare Fiber | 05 – 0.5m | NE – None |
| SS – Specify | 9 – 900um Loose Tube | 08 – 0.8m | FA – FC/APC | |
| 2 – 2mm Loose Tube | 10 – 1.0m | FU – FC/UPC | ||
| 3 – 3mm Loose Tube | 15– 1.5m | SA – SC/APC | ||
| 20 – 2.0m | SU – SC/UPC | |||
| LA – LC/APC | ||||
| LU – LC/UPC | ||||
| SS – Specify | ||||
Example: FWDM-1550/1310-S2-9-10-FA is the PN for 1550/1310nm 1×2 Filter WDM, SMF-28e on all port, 1.0m fiber length, FC/APC

