Single mode optical fiber for WDM transmission, and manufacturing method of preform for the optical fibers,申请号US20030357492-传众专利搜索

Single mode optical fiber for WDM transmission, and manufacturing method of preform for the optical fibers

申请公布号：US2004028364(A1)

申请号：US20030357492

申请日期：2003.02.04

申请公布日期：2004.02.12

申请人：

MORIDAIRA HIDEYA;KAWASAKI MITSUHIRO;KAMIYA TAMOTSU

发明人：MORIDAIRA HIDEYA;KAWASAKI MITSUHIRO;KAMIYA TAMOTSU

分类号：C03B37/012;C03B37/014;G02B6/00;G02B6/036;(IPC1-7):G02B6/22;C03B37/018

主分类号：C03B37/012

摘要：The optical fiber which enables the optical fiber transmission stabilized in the wavelength range of the pump light also, which is not used conventionally, and suppresses the non-linear effect on the occasion of WDM transmission is offered. The optical fiber for WDM transmission has at least three or more layers wherein the first core doped with germanium is located at the center and surrounded by the second core having a refractive index lower than the first core, and cladding having a refractive index lower than the first core and higher than second core surrounds the second or last core layer. The single mode optical fiber for WDM transmission has the following characteristics: cut off wavelength of 1400 nm or less, chromatic dispersion of 5-13 ps/nm/km at 1500 nm, zero dispersion wavelength of 1400 nm or less and transmission loss of 0-5 dB/km or less in the wavelength range from cut off wavelength to 1600 nm