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Bend-Insensitive Polarization-Maintaining Fiber for Devices
The bend-insensitive polarization-maintaining fiber for devices is a specialty PM fiber designed for miniaturized and bend-sensitive polarization devices. It offers excellent polishing performance, bend resistance, geometric consistency, and polarization-maintaining performance. The product is available at operating wavelengths of 1310 nm and 1550 nm. Under small bending radius conditions, it still maintains low macrobending loss and good crosstalk performance. It also provides wide-temperature operating capability from −45 to +85℃ and good mechanical reliability, making it suitable for various polarization fiber devices with limited space and small bending radii.
Product features:Excellent polishing performance;Excellent bend resistance;Excellent geometric consistency and polarization-maintaining performance;Excellent full-temperature stability and mechanical reliability
Part Number:MP-PM15T-125-U25-ML
Application area:Miniaturized polarization devices | Bend-sensitive polarization devices
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Operating wavelength Attenuation
1310 / 1550 nm ≤0.5 dB/km / ≤3.0 dB/km

Parameter | Unit | Product Specification | ||
Product model | / | MP-PM15T-125-U25-ML | MP-PM13T-125-U25-BI | MP-PM15T-125-U25-BI |
Operating wavelength | nm | 1550 | 1310 | 1550 |
Cutoff wavelength | nm | 1290~1520 | 1100~1290 | 1290~1520 |
Mode field diameter | μm | 9.0 ± 0.5 | 7.8 ± 0.5 | 9.0 ± 0.5 |
Attenuation | dB/km | ≤0.5 | ≤3.0 | ≤3.0 |
Beat length | mm | ≤5.0 | ≤3.0 | ≤4.0 |
Typical crosstalk at 4 m | dB | ≤ -40 | ≤ -40 | ≤ -40 |
Typical crosstalk at 100 m | dB | ≤ -30 | ≤ -30 | ≤-30 |
Macrobending attenuation | dB | ≤0.2(R=7.5mm, 10turns) | ≤0.1(R=5.0mm, 10turns) | |
Bending crosstalk | dB | ≤-30(R=7.5mm, 10turns) | ||
Cladding diameter | μm | 124.5 ± 1.0 | ||
Coating type | / | Dual-layer UV-cured acrylic resin | ||
Coating diameter | μm | 245.0 ± 2.0 | ||
Core-to-cladding concentricity | μm | ≤0.5 | ||
Cladding non-circularity | % | ≤1.0 | ||
Operating temperature | ℃ | -45~+85 | ||
Proof test level | kpsi | 100/200 | ||
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