David fiber device Ltd
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PM coupler, 1550nm, 1x2 type, 50:50 split ratio, 20dB extinction ratio, single axis working.
The PM coupler is based on crystal or thin film filter, it can split light at a certain coupling ratio. You can choose the working axis according to your need.
Features
Extinction ratio: ≥20dB
Split ratio: 50:50
Compact size: 5.5x35mm package size
Fiber length: 0.8m
Applications
PM fiber amplifier
Fiber sensors
| Specifications | ||
| Parameters | Unit | Specification |
| Operating wavelength Range | nm | 1550 |
| Insertion loss (1-2, 2-3 @ 23 C ) | dB | ≤3.71 (excluding the 3dB width band) |
| Extinction Ratio | dB | ≥20dB |
| Split ratio | % | 50:50 |
| Excess loss | dB | 0.7 |
| Directivity | dB | ≥50 |
| Return Loss | dB | ≥45 |
| Power handling(mW) | mW | ≤500 |
| Pigtail length | m | 0.8m or other |
| Port color | - | can be customized |
| Tensile Load | N | ≤5 |
| Operating Temperature | C | -5 to +70 |
| Storage Temperature | C | -40 to +85 |
| Remark | ||
| * Above specifications are tested without connector at room temperature
| ||
Q&A
Question
1. I don't know the exact split ratio, can you provide me the right PM coupler according to the insertion loss?
Answer1, Yes, we can provide you the right PM coupler with your insertion loss.
2. I don't want to choose the slow axis as my working axis, can I choose the fast axis as my working axis for my project?
Answer2, It's OK for us to make the special PM coupler.
3. Is it the same value for the actual insertion loss and the insertion loss on the test report?
Answer3, No, the insertion loss on our test report exclude the 3dB width band.
For other question about our PM coupler, you can contact our sales directly.