Description
940nm High Power 1×3 3×3 PM Fiber Fused Coupler
940nm High Power 1×3 3×3 PM Fiber Fused Coupler is built with fused biconical taper (FBT) technology, it can be used in split the optical signal power into 3 parts with even or various coupling ratio and keep the polarization maintaining, it’s widely applied in Quantum Communication and fiber optic diffraction field. The optical power can be up to 20W CW.
| Application: | Features: | ![]() |
| Quantum Communication | Low Excess Loss | |
| Fiber Optic Sensor | High Return Loss | |
| Fiber Laser | Low Insertion Loss | |
| Optical Diffraction System | High Reliability |
Specification:
| Parameter | Symbol | Value | Unit |
| Center Wavelength | λ | 940 | nm |
| Bandwidth | BW | ±10 | nm |
| Max. Excess Loss | EL | 1.2 | dB |
| Typ. Coupling Ratio | CR | 33/33/33 (±4) | % |
| Min. Extinction Ratio | ER | 20 | dB |
| Min. Directivity | 50 | dB | |
| Min. Return Loss | RL | 50 | dB |
| Max. Optical Power (CW) | P | 5, 10, 15, 20 or specify | W |
| Max. Tensil Load | 5 | N | |
| Fiber Type | PM Panda fiber | – | |
| Operating Temperature | T | -40~70 | ℃ |
| Storage Temperature | T | -40~85 | ℃ |
| Package Dimension | 90x20x10 | 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, EL will be 0.2dB higher, ER will be 2dB lower, slow axis is default aligned to the connector key |
| Connectors only 1W CW optical power guarantee. If need pulse version please contact us to confirm. |
Drawing:

Ordering Information (Part Number):
| HPMFUC-WWW-PP-RR-HH-J-LL-CC |
||||||
| WWW | PP | RR | HH | J | LL | CC |
| Wavelength | Port | Coupling Ratio | Handling Power | Fiber Jacket | Fiber Length | Connector |
| 905 – 905nm | 13 – 1×3 | 01 – 1/98/1 | 05 – 5W | B – 250um Bare Fiber | 05 – 0.5m | NE – None |
| 915 – 915nm | 33 – 3×3 | 05 – 5/95/5 | 10 – 10W | 9 – 900um Loose Tube | 10 – 1.0m | FA – FC/APC |
| 920 – 920nm | 10 – 10/80/10 | 15 – 15W | 2 – 2.0mm Loose Tube | 15 – 1.5m | FU – FC/UPC | |
| 930 – 930nm | 20 – 20/60/20 | 20 – 20W | 3 – 3.0mm Loose Tube | 20 – 2.0m | SA – SC/APC | |
| 940 – 940nm | 33 – 33/33/33 | SS – Specify | SS – Specify | SU – SU/APC | ||
| 950 – 950nm | SS – Specify | LA – LC/APC | ||||
| 975 – 975nm | LU – LC/UPC | |||||
| 980 – 980nm | SS – Specify | |||||
| SSS – Specify | ||||||
Example: HPMFUC-940-13-33-05-9-10-FA is the PN for 940nm High Power PM Fiber Fused Coupler, 1×3, 33/33/33, 5W optical power, 1.0m PM Panda fiber, 900um loose tube, FC/APC connector





