Photonic crystal fiber

Abstract

A photonic crystal fiber includes a core region and a cladding region surrounding the core region. The core region and the cladding region have a material having a first refractive index, the cladding region additionally includes a plurality of microstructures extending from an input end of the fiber along a longitudinal axis of the fiber to an output end of the fiber, the plurality of microstructures having a second refractive index which is less than the first refractive index. The plurality of microstructures in the cladding region are arranged in a cross-sectional pattern comprising at least one ring of microstructures surrounding the core region, wherein a diameter of the maximum extent of the core region is at least 16 μm, the photonic crystal fiber having a transmission bandwidth of 200 nm or more.

Dependencies are inferred from the claim text.