Description
1750nm 1xN 2xN PM Fiber Fused Coupler Module
1750nm 1xN 2xN PM Fiber Fused Coupler Module is built with fused biconical taper (FBT) technology, optical signal power can be splitted into N parts with even or various coupling ratio by the FBT Coupler, it’s widely applied in fiber optic transmission and fiber optic sensor field, the MM and PM types are available upon request.
| 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 | 1750 | nm | |
| Bandwidth |
BW | ±10 | nm | |
| Max Insertion Loss | for 1×2, 2×2 Even | IL | 3.8 | dB |
| for 1×4, 2×4 Even | 7.8 | |||
| for 1×8, 2×8 Even | 11.5 | |||
| for 1×16, 2×16 Even | 14.0 | |||
| for 1×32, 2×32 Even | 16.2 | |||
| Min. Extinction Ratio | ER | 18 | dB | |
| Min. Directivity |
50 | dB | ||
| Min. Return Loss | RL | 50 | dB | |
| Max. Optical Power (CW) |
P | 2 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 |
100x80x10 | 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 |
Drawing:

Ordering Information (Part Number):
| PMFUCM-WWWW-PP-RR-J-LL-CC |
|||||
| WWWE | PP | RR | J | LL | CC |
| Wavelength | Port | Coupling Ratio | Fiber Jacket | Fiber Length | Connector |
| 1700 – 1700nm | 12 – 1×2 | EV – Even | B – 250um Bare Fiber | 05 – 0.5m | NE – None |
| 1720 – 1720nm | 22 – 2×2 | SS – Specify | 9 – 900um Loose Tube | 10 – 1.0m | FA – FC/APC |
| 1750 – 1750nm | 14 – 1×4 | 2 – 2.0mm Loose Tube | 15 – 1.5m | FU – FC/UPC | |
| 1760 – 1760nm | 24 – 2×4 | 3 – 3.0mm Loose Tube | 20 – 2.0m | SA – SC/APC | |
| SSS – Specify | 18 – 1×8 | SS – Specify | SU – SU/APC | ||
| 28 – 2×8 | LA – LC/APC | ||||
| 116 – 1×16 | LU – LC/UPC | ||||
| 216 – 2×16 | SS – Specify | ||||
| 132 – 1×32 | |||||
| 232 – 2×32 | |||||
| SS – Specify | |||||
Example: PMFUCM-1750-18-EV-9-10-FA is the PN for 1750nm 1×8 PM Fiber Fused Coupler Module, 1×8, Even, 1.0m PM Panda fiber, 900um loose tube, FC/APC connector

