Large Mode Area PM photonic crystal fibers

Large Mode Area photonic crystal fibers – Polarization-Maintaining

Our Large Mode Area photonic crystal fibers are designed for diffraction-limited high-power delivery. The large mode area prevents nonlinear effects and material damage.

With standard fibers, you trade large mode areas for single-mode operation. With our Large Mode Area PM fibers, you get single-mode, polarization-maintaining operation in a wide range of wavelengths.

Key Features

Endlessly single-mode operation

Handles high powers

Low nonlinearities

Low fiber loss

Wavelength-independent MFD

Polarization-maintaining

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Our LMA polarization-maintaining single-mode fibers are optimized for low loss and an almost constant mode field diameter. With standard technology, you trade large mode areas for single-mode operation. Our crystal fiber Large Mode Area polarization-maintaining fibers are endlessly single-mode (i.e. it has no higher-order mode cut-off) and deliver excellent mode quality at all wavelengths.

The PM-1550 has a strong form-birefringence and is optimized to create a short beat length between the polarizations. It has a reduced bend-coupling between polarization states, improved polarization extinction ratio, and is 30 times less temperature-sensitive than conventional high-birefringence fiber.

The LMA fibers are available in polarizing and polarization-maintaining versions.

For fibers with connectors, please see our aeroGUIDE patch cords or our SuperK CONNECT fiber delivery system.

Want more details?

If you want more details about how to handle optical fibers: Strip, cleave, and couple them, we have some application notes for you.


Specifications

Choose model:
LMA-PM-5
LMA-PM-10
LMA-PM-15
PM-1550
Single-mode cut-off wavelength1)
None
None
None
None
Low loss range [nm]
400-1200
500-1700
600-1700
600-1700
Attenuation @ 532 nm [dB/km]
<40 2)
<25 2)
Attenuation @ 632 nm [dB/km]
<20
<15
Attenuation @ 1064 nm [dB/km]
<7
<5
<10
Attenuation @ 1550 nm [dB/km]
≤3
Mode field diameter,1/e2 @ 532 nm [µm]
4.2
8.4
12.2
Mode field diameter,1/e2 @ 1064 nm [µm]
4.4
8.6
12.6
Mode field diameter,1/e2 @ 1550 nm [µm]
0.04
5.5/3.8
Numerical aperture @ 532 nm
0.2 typ.
0.12
0.07
Numerical aperture @ 1064 nm
≥1.5 x 10-4
≥1.4 x 10-4
≥1.3 x 10-4
Birefringence Δn @ 1064 nm
≥18
≥18
≥18
Birefringence Δn @ 1550 nm
≥4e-4
Polarization extinction ratio [dB] 3)
<18 
Chromatic dispersion [ps/nm/km]
55

1) TIA-445-80-C standard.
2) 16 cm bend diameter.

3) AKA PXtalk on a 2 m sample.

LMA-PM-5
LMA-PM-10
LMA-PM-15
PM-1550
Core diameter [µm]
5
10
15
6/4.4
Cladding diameter [µm]
125
230
230
125
Coating diameter [µm]
245
350
350
245
Core and cladding material
Pure silica
Pure silica
Pure silica
Pure silica
Coating material
Acrylate
Acrylate
Acrylate
Acrylate
Coating concentricity [µm]
<10
<10
<10
<10
Proof test level [%]
0.5
0.33
0.33
0.5
Relative power handling
Low
Moderate
Moderate
Relative bend loss at short WL
Low
Moderate
Moderate