PM Filter Coupler
The purpose of the polarization-maintaining device is to maintain the original polarization state of the polarized light or to transform the polarization state as far as possible when connecting or coupling the polarized light in two polarization-maintaining fibers.
There are many PM devices, such as PM connector, PM collimator,Polarization combiner /splitter, In-line Polarizer, PM circulator, PM isolator, PM optical coupler and so on.
Product Features：
- Low Excess Loss
- Various Coupling Ratio
- Wide Pass Band
- High Stability And Reliability
- Epoxy Free Optical Path
Product Application：
- Optical Amplifier
- Optical Networks
- Power Monitoring
- Fiber Sensors
Product Parameters：
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Parameter |
1X2 |
2X2 |
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Central Wavelength (nm) |
1550 |
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Insertion Loss(Max.)(dB)
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Split Ration |
Split Ration |
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1:99 |
2:98 |
5:95 |
10:90 |
40:60 |
50:50 |
1:99 |
2:98 |
5:95 |
10:90 |
40:60 |
50:50 |
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21/0.8 |
18/0.8 |
14/0.8 |
11.5/1.1 |
4.6/2.6 |
3.6 |
21/1.0 |
18/1.0 |
14/1.1 |
11.8/1.3 |
4.8/2.8 |
4.0 |
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Max. Excess Loss (dB) |
1.0 |
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Max. Uniformjty (dB) |
0.8 |
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Tap Ratio |
1%，2%，5%，10%，40% and 50% |
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Mini. Extintion Ratio (dB) |
20 |
18 |
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Optical Return Loss (dB) |
≥50 |
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Power Handling (mW) |
300 |
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Max. Tensile Load (N) |
5 |
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Operating Temperature (℃) |
-5 ~ +75 |
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Storage Temperature (℃) |
-40 ~ +85 |
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Fiber Type |
PM Panda fiber for In/Out，SMF-28e+(LL) for Tap Port |
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All PM Panda fiber |
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Package Dimension (mm) |
Ø5.5 x L34 |
Ø5.5 x L38 |
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