Description
1850nm 1×2 2×2 PM Fiber Fused Coupler
1850nm 1×2 2×2 PM Fiber Fused Coupler is built with fused biconical taper (FBT) technology, it can be used in split the optical signal power into two parts with even or various coupling ratio and keep the polarization maintaining, it’s widely applied in Quantum Communication, fiber optic sensor, and fiber optic diffraction field.
| 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 | 1850 | nm |
| Bandwidth | BW | ±10 | nm |
| Max. Excess Loss | EL | 0.8 | dB |
| Coupling Ratio Tolerance | 50±3, 40±2.5, 30±2, 20±1.5, 10±1.5, 5±0.7, 1±0.3 | % | |
| Min. Extinction Ratio | ER | 20 | 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 | Φ3×L54 | 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 |
| If need optical power more than 2W CW, please contact us to confirm. Connectors only 1W CW optical power guarantee. |
Drawing:
Ordering Information (Part Number):
| PMFUC-WWWW-PP-RR-J-LL-CC |
|||||
| WWWW | PP | RR | J | LL | CC |
| Wavelength | Port | Coupling Ratio | Fiber Jacket | Fiber Length | Connector |
| 1850 – 1850nm | 12 – 1×2 | 01 – 1/99 | B – 250um Bare Fiber | 05 – 0.5m | NE – None |
| 1860 – 1860nm | 22 – 2×2 | 02 – 2/98 | 9 – 900um Loose Tube | 10 – 1.0m | FA – FC/APC |
| 1870 – 1870nm | 03 – 3/97 | 2 – 2.0mm Loose Tube | 15 – 1.5m | FU – FC/UPC | |
| 1890 – 1890nm | 05 – 5/95 | 3 – 3.0mm Loose Tube | 20 – 2.0m | SA – SC/APC | |
| SSSS – Specify | 10 – 10/90 | SS – Specify | SU – SU/APC | ||
| 20 – 20/80 | LA – LC/APC | ||||
| 30 – 30/70 | LU – LC/UPC | ||||
| 40 – 40/60 | SS – Specify | ||||
| 50 – 50/50 | |||||
| SS – Specify | |||||
Example: PMFUC-1850-12-50-9-10-FA is the PN for 1850nm PM Fiber Fused Coupler, 1×2, 50/50, 1.0m PM Panda fiber, 900um loose tube, FC/APC connector