Title :
Attenuation-optimized dispersion-flattened quadruple-clad fibers with moderate F-doping in the first inner cladding
Author :
Gao, Yangsheng ; Cong, Xisheng ; Jian, Shuisheng
Author_Institution :
Inst. of Lightwave Technol., Northern Jiaotong Univ., Beijing, China
fDate :
6/1/1992 12:00:00 AM
Abstract :
The arbitrary quadruple-step-index structure is examined as a new design model for dispersion-flattened fibers to obtain more degrees of freedom and simulate the practical fiber profile. The effects and limitations of structural factors are examined. Under the severe condition of the first clad depression - Delta n/sub 1/<0.004, the refractive index profile is optimized for both dispersion compensation and low loss. A number of fibers were fabricated by modified chemical vapor deposition (MCVD) process with a typical loss of 0.23 dB/km at 1.55 mu m and low dispersion over the 1.3- mu m and 1.55- mu m windows.<>
Keywords :
claddings; optical dispersion; optical fibres; optical losses; optimisation; refractive index; 0.23 dB; 1.3 micron; 1.55 micron; MCVD; attenuation-optimised optical fibres; degrees of freedom; design model; dispersion compensation; dispersion-flattened quadruple-clad fibers; fiber profile; first clad depression; inner cladding; low dispersion; low loss; moderate F-doping; modified chemical vapor deposition; quadruple-step-index structure; refractive index profile; structural factors; Electron optics; Optical attenuators; Optical control; Optical fiber communication; Optical fiber dispersion; Optical fiber polarization; Optical interferometry; Optical refraction; Optical variables control; Shape;
Journal_Title :
Photonics Technology Letters, IEEE
