Dispersion-controlled optical fiber

#This application claims priority to an application entitled “Dispersion-controlled optical fiber” filed with the Korean Intellectual Property Office on Apr. 3, 2002 and assigned Serial No. 2002-18162, the contents of which are hereby incorporated by reference.

#1. Field of the Invention

#The present invention relates to an optical fiber and, more particularly, to a broad band dispersion-controlled optical fiber.

#The above and other features and advantages of the present invention will be more apparent from the following detailed description taken in conjunction with the accompanying drawings, in which:

#FIG. 1 shows the construction and distribution of refractive indices of a dispersion-controlled optical fiber according to a preferred embodiment of the present invention;

#FIG. 2 shows the dispersion characteristic of the dispersion-controlled optical fiber shown in FIG. 1; and,

#Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the accompanying drawings. For the purposes of clarity and simplicity, a detailed description of known functions and configurations incorporated herein will be omitted as it may make the subject matter of the present invention unclear.

#FIG. 1 shows the construction and distribution of the refractive indices of a dispersion-controlled optical fiber in accordance with a preferred embodiment of the present invention. As shown in FIG. 1, the dispersion-controlled optical fiber 100 consists of a center core 110, an upper core 120, a minutely depressed refractive index region 130, and a cladding 140.

#The center core 110 consists of silica and has a radius, a. In the embodiment, the center core 110 is doped with a predetermined amount of germanium for tuning its refractive index to N1.