Description
640nm 1×2 2×2 SM Fiber Fused Coupler
640nm 1×2 2×2 SM Fused Coupler is built with fused biconical taper (FBT) technology, optical signal power can be splitted into two parts with even or various coupling ratio by the FBT Coupler, it’s widely applied in Quantum Communication 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 Amplifier | Low Insertion Loss | |
| Optical Diffraction System | High Reliability |
Specification:
| Parameter | Symbol | Value | Unit |
| Center Wavelength | λ | 640 | nm |
| Bandwidth | BW | ±10 | nm |
| Max. Excess Loss | EL | 1.4 | dB |
| Coupling Ratio Tolerance | 50±3, 40±2.5, 30±2, 20±1.5, 10±1.5, 5±0.7, 1±0.3 | % | |
| Max. Polarization Dependent Loss | PDL | 0.2 | dB |
| Min. Directivity | 50 | dB | |
| Min. Return Loss | RL | 50 | dB |
| Max. Optical Power (CW) | P | 500 or specify | mW |
| Max. Tensil Load | 5 | N | |
| Fiber Type | 630-HP 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, RL will be 5dB lower. |
Drawing:
Ordering Information (Part Number):
| SMFUC-WWW-PP-RR-J-LL-CC |
|||||
| WWW | PP | RR | J | LL | CC |
| Wavelength | Port | Coupling Ratio | Fiber Jacket | Fiber Length | Connector |
| 633 – 633nm | 12 – 1×2 | 01 – 1/99 | B – 250um Bare Fiber | 05 – 0.5m | NE – None |
| 635 – 635nm | 22 – 2×2 | 02 – 2/98 | 9 – 900um Loose Tube | 10 – 1.0m | FA – FC/APC |
| 640 – 640nm | 03 – 3/97 | 2 – 2.0mm Loose Tube | 15 – 1.5m | FU – FC/UPC | |
| 650 – 650nm | 05 – 5/95 | 3 – 3.0mm Loose Tube | 20 – 2.0m | SA – SC/APC | |
| 680 – 680nm | 10 – 10/90 | SS – Specify | SU – SU/APC | ||
| SSS – Specify | 20 – 20/80 | LA – LC/APC | |||
| 30 – 30/70 | LU – LC/UPC | ||||
| 40 – 40/60 | SS – Specify | ||||
| 50 – 50/50 | |||||
| SS – Specify | |||||
Example: SMFUC-640-12-50-9-10-FA is the PN for 640nm SM Fiber Fused Coupler, 1×2, 50/50, 1.0m SM fiber, 900um loose tube, FC/APC connector