PHOTONIC CRYSTAL OPTICAL FIBER CAPABLE OF SINGLE-MODE TRANSMISSION AND PREFORM THEREOF

摘要

PROBLEM TO BE SOLVED: To provide a photonic crystal optical fiber with an adjustable refractive index designed for being capable of a single-mode transmission and to provide a photonic crystal optical fiber preform for preparing the photonic crystal optical fiber.;SOLUTION: The photonic crystal optical fiber preform 200 is provided for preparing the photonic crystal optical fiber having a refractive index distribution which is the same as an electric field power distribution of incident light, the photonic crystal optical fiber preform 200 includes: a roughly rod-shaped substrate 210 provided with a plurality of holes 220 in a longitudinal direction arranged in the configuration of a photonic lattice; and a plurality of refractive index-adjusting material layers 221, 222 and 223, each having a different refractive index, which are disposed in the plurality of holes 220 and arranged so that the refractive index distribution is the same as the electric field power distribution of the incident light.;COPYRIGHT: (C)2006,JPO&NCIPI