Large Mode Area Photonic Crystal Fibers

PCF Fiber PCF Fiber PCF Fiber

Single-mode large mode area photonic crystal fibers combine a large effective mode filed area and relatively low loss to allow high average/peak power delivery without nonlinear effects or material damage over long distances.

The fibers are endlessly single-mode (i.e. have no higher-order mode cut-off) and provide excellent beam quality at all wavelengths.

Spectral operation range is only limited by the bend-induced leakage of the fundamental mode at shorter wavelengths which depends on the fiber core diameter.

High-power delivery with
excellent beam quality
Mode filtering Multi-wavelength transmission Short pulse delivery Low beam divergence pointing
Optical Characteristics Core Diameter (μm)
               a-bend radius 15.8 cm
  10 15 20 25 30 35
Higher-Order Mode Cut-Off (nm) no
Attenuation @ 1064 nm (dB/km) < 5 < 8 < 10 < 20 not operable not operable
Attenuation @ 1550 nm (dB/km) < 2 < 3 < 5 < 5 < 10 < 10
Mode Field Diameter @ 1550 nm (1/e2) (μm) 8.0±0.5 12.0±0.5 16.0±0.5 20.0±0.5 23.5±0.5 26.5±0.5
Calculated Numerical Aperture @ 1550 nm (1/e2) 0.123 0.082 0.062 0.049 0.042 0.037
Short Wavelength Edge (nm) a 500 600 800 900 1100 1200
Long Wavelength Edge (nm) a 1700
Physical Characteristics Core Diameter (μm)
               b-available high temperature (200 °C) resistant tin coating
  10 15 20 25 30 35
Cladding Diameter (μm) 80±5 120±5 1600±5 200±5 240±10 280±10
Coating Diameter (μm) 110-140 160-190 200-230 250-300 300-350 400-450
Core and Cladding Material Pure silica with OH content less than 1ppm
Coating Material, Single Layer b Acrylate
Proof-Test Level, % 0.5