Polarization Maintaining
Short Wavelength Fibers
Coherent’s industry leading visible and short wavelength Polarization Maintaining fibers have superior waveguide, radiation,
and mechanical properties enabling a large variety of new critical applications in diverse markets. High consistency and
extreme end-to-end control of optical properties provide particular advantage in spectrographic and frequency sensitive
applications. The intrinsically high level of radiation resistance allows this family to operate for extended periods of time on
low earth orbits, near and deep space, and in applications where risk of exposure to man-made radiation is great.
Typical Applications
• Laser pigtailing
• Spectroscopy
• Sensors
• Bio-medical
• Metrology
Features & Benefits
• Panda-style configuration — Superior performance, intrinsically good radiation performance
• Tight specifications — Highly deterministic results, highest product yield
• High Proof Test — Low risk of mechanical handling failure
• High fatigue failure resistance — Longest service life
Optical Specifications
PM460-HP
PM630-HP
PM780-HP
Operating Wavelength
460 – 700 nm
620 – 850 nm
770 – 1100 nm
Core NA
0.120
0.120
0.120
Mode Field Diameter (Gaussian)
3.3 ± 0.5 µm @ 515 nm
4.5 ± 0.5 µm @ 630 nm
5.3 ± 1.0 µm @ 850 nm
Cutoff
410 ± 40 nm
570 ± 50 nm
710 ± 60 nm
Core Attenuation
≤ 100.0 dB/km @ 488 nm
≤ 15.0 dB/km @ 630 nm
≤ 4.0 dB/km @ 850 nm
Beat Length (nominal)
1.3 mm @ 460 nm
1.8 mm @ 630 nm
2.4 mm @ 850 nm
Normalized Cross Talk
N/A
N/A
≤ - 40 dB at 4 m @ 850 nm
Birefringence
nominal 3.5 × 10⁻⁴
nominal 3.5 × 10⁻⁴
nominal 3.5 × 10⁻⁴
Geometrical & Mechanical
Specifications
Cladding Diameter
125.0 ± 1.0 µm
125.0 ± 1.0 µm
125.0 ± 1.0 µm
Core Diameter
3.0 µm
3.5 µm
4.5 µm
Coating Diameter
245.0 ± 15.0 µm
245.0 ± 15.0 µm
245.0 ± 15.0 µm
Coating Concentricity
< 5.0 µm
< 5.0 µm
< 5.0 µm
Core/Clad Offset
≤ 0.50 µm
≤ 0.50 µm
≤ 0.50 µm
Coating Material
Acrylate
Acrylate
Acrylate
Operating Temperature Range
-40 to 85 °C
-40 to 85 °C
-40 to 85 °C
Prooftest Level
≥ 200 kpsi (1.4 GN/m²)
≥ 200 kpsi (1.4 GN/m²)
≥ 200 kpsi (1.4 GN/m²)
