It consists of white prismatic crystals in radiating groups of crystal fiber.

The division investigates new optical materials, especially photonic crystal fibers.

These include photonic crystals, photonic crystal fibers and metamaterials.

Photonic crystal fibers can be divided into two modes of operation, according to their mechanism for confinement.

P. St. J. Russell, "Photonic crystal fibers," Science 299, 358-362 (2003).

The first photonic crystal fibers became commercially available in 2000.

Photonic crystal fibers can carry higher power than conventional fibers and their wavelength-dependent properties can be manipulated to improve performance.

There-thatwas her concern, a request to schedule the fabrication of four twenty-meter crystal fibers.

As such, photonic crystal fibers may be considered a subgroup of microstructured optical fibers.

Photonic crystal fibers are a variant of the microstructured fibers reported by Kaiser et al.