Hollow core photonic crystal fibers

Hollow core photonic crystal fibers

Hollow-core photonic bandgap fibers turn conventional fiber technology inside out by guiding the light in a hollow-core. This unique waveguide is ideal for sensing, imaging, and ultrashort pulse applications.

Our hollow-core photonic bandgap fibers deliver ultrashort pulses without non-linear effects or material damage and tolerate tight bending without impact on transmission. Hollow-core fibers are radiation insensitive and suitable for harsh radiation environments.

Key Features

> 98% of the optical power in the core

Slice 1

Can be gas or particle-filled

­Ultra-low bend loss

Low Fresnel reflections at end faces

Group index close to unity

 Radiation insensitive

Models and options

Standard wavelength 820 nm
Wavelength loss threshold 250 dB/km
Standard wavelength 1060 nm
Wavelength loss threshold 100 dB/km
Standard wavelength 1550 nm
Wavelength loss threshold 30 dB/km

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For a large variety of applications

More than 98% of the mode is confined in air, which makes the fibers very radiation insensitive and suitable for radiation hard environments.

In hollow-core photonic bandgap fibers, a microstructured silica cladding with air holes confines the light inside a hollow core. They enable a large variety of applications that require performances that can not be met using traditional solid-core fibers.

Hollow-core fibers are ideal for narrow linewidth delivery, power delivery, pulse shaping and compression, nonlinear optics, gas spectroscopy, fiber optic gyroscopes, and sensors.

Unique properties

The hollow core allows control of the gas composition and pressure, enabling extremely long interaction lengths between the light and the gas.

The weak interaction between the fundamental mode and the surrounding silica also makes these fibers radiation insensitive.

Reduced non-linearities

Since only a small fraction of the light propagates in silica, the effect of material non-linearities is significantly reduced compared to solid core fibers.

Our standard products cover three wavelength ranges around the wavelengths 800 nm, 1060 nm, and 1550 nm. Get in touch to discuss custom wavelengths.

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.


Choose model:
Center wavelength
820 nm
 1060 nm
1550 nm
Operating wavelength loss threshold
250 dB/km
100 dB/km
30 dB/km
Operating wavelengths
780-860 nm
1030-1090 nm
1490-1680 nm
MFD at design wavelength1)
5.5 ± 2 µm
 6.7 µm ± 1 µm
9.0 ± 1 µm

1) Full 1/e2 width of the near field intensity distribution.

Core diameter
7.5 ± 1.5 µm
9.0 ± 1.5 µm
11.5 ± 1.5 µm
Cladding diameter
130 ± 5 µm
120 ± 5 µm
120 ± 2 µm
Coating diameter
(single-layer acrylate)
220 ± 50 µm
240 ± 40 µm
220 ± 30 µm