Photonic Crystal Fibres: An Endless Variety

摘要

A photonic Crystal fiber has an array of micro- scopic air holes running algoing its length. The periodicity of the array is broken by a deliberate "defect" that acts as a wave- guide core. Light is confined to this core by the holes. Although some designs of photonic crystal fibre guide light by total inter- optical fibres, their properties can be strikingly different. Other designs guide light by photonic bandgap confinement and repre- sent a totally new type of fibre.