Description
780/1560nm High Isolation 1×2 Filter WDM
780/1560nm High Isolation 1×2 Filter WDM (Wavelength Division Mulitplexer) is a fiber component built with thin-film filter technology, it can be used to separate or combine 780nm and 1560nm wavelength signal, it’s widely used in Fiber Laser Systems and Fiber SHG Systems, the high power type is available upon request.
| Application: | Features: | ![]() |
| Fiber Laser | Epoxy Free | |
| Fiber SHG | High Isolation | |
| Optical Diffraction System | Low Insertion Loss | |
| Lab And Research | Optical Path Reversibility |
Specification:
| Parameter | Symbol | Value |
Unit |
| Type | P780 R1560 | nm | |
| Pass Band | λ | 780 (770-790) | nm |
| Reflect Band | λ | 1560 (1510-1580) | nm |
| Max. Insertion Loss @Pass Channel | IL | 1.0 | dB |
| Max. Insertion Loss @Reflect Channel (HI 780 fiber) | IL | 1.0 | dB |
| Min. Isolation @Pass Channel | Iso | 50 | dB |
| Min. Isolation @Reflect Channel | Iso | 30 | 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 or customized | mW | |
| Max. Tensil Load | P | 5 | N |
| Fiber Type | HI 780 on Common & Pass Port SMF-28e or HI 780 fiber on Reflect Port |
– | |
| 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):
| HIFW-WWW/WWWW-FF-J-LL-CC |
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| WWW/WWWW | FF | J | LL | CC |
| Wavelength | Fiber Type on all Port | Fiber Jacket | Fiber Length | Connector |
| 775/1550 – 775nm Pass, 1550nm Reflect | S2 – SMF-28e | B – 250um Bare Fiber | 05 – 0.5m | NE – None |
| 780/1550 – 780nm Pass, 1550nm Reflect | H7 – HI 780 | 9 – 900um Loose Tube | 08 – 0.8m | FA – FC/APC |
| 780/1560 – 780nm Pass, 1560nm Reflect | A2 – SMF-28e on all ports | 2 – 2mm Loose Tube | 10 – 1.0m | FU – FC/UPC |
| A7 – HI 780 on all ports | 3 – 3mm Loose Tube | 15– 1.5m | SA – SC/APC | |
| SS – Specify | 20 – 2.0m | SU – SC/UPC | ||
| LA – LC/APC | ||||
| LU – LC/UPC | ||||
| SS – Specify | ||||
Example: HIFW-780/1560-A7-9-10-FA is the PN for 780/1560nm High Isolation 1×2 Filter WDM, HI 780 fiber on all port, 1.0m fiber length, FC/APC