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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)