BlazePhotonics announced today the release for sale of a new 800nm hollow core photonic crystal fiber.
Hollow core or Photonic Bandgap Fibers guide light in a hollow core, surrounded by a microstructured cladding formed by a periodic arrangement of air holes in fused silica glass. Since only a small fraction of the light propagates in glass, the effect of material nonlinearity is significantly reduced and the fibers do not suffer from the same limitations on loss as conventional fibres made from solid material alone.
While hollow core fibers hold the promise to become the next generation ultra-low loss transmission fibers, in the immediate future they find important applications in power delivery, sensors and nonlinear optics. The virtual absence of optical non-linearity makes hollow core fiber particularly interesting for the delivery of short optical pulses.
With a center wavelength of 830nm, a useful bandwidth of more than 70nm and a dispersion slope of 5 ps/nm2/km, the new fiber is specifically designed for the delivery of sub-picosecond pulses from Ti:Sapphire lasers. Chromatic dispersion crosses zero at about 810nm, well within the tuning range of many Ti:Sapphire laser systems. The center-band attenuation is typically <0.2 dB/m, enabling pulse delivery over up to several tens of meters. Bend loss in these fibers is not an issue for most applications as winding the fiber at 3 mm radius does not noticeably increase loss.
The fibers are protected by a single layer acrylate coating and can be stripped and cleaved like ordinary solid fibers.