Title :
A study of the optimum fiber design for a distributed Raman amplification transmission system
Author :
Fukai, Chisato ; Nakajima, Kazuhide ; Zhou, Jian ; Tajima, Katsusuke ; Kurokawa, Kenji ; Sankawa, Izumi
Author_Institution :
NTT Access Network Service Syst. Labs., Ibaraki, Japan
Abstract :
In this letter, we describe numerically the relationship between optical fiber parameters and the transmission performance of distributed Raman amplification (DRA) in terms of signal-to-noise ratio characteristics and nonlinear impairment. In our calculation, we fully considered the dopant dependence of the optical fiber parameters with regard to DRA transmission performance. Our calculated results show that an optimization of the relationship between the relative index difference and the effective area makes it possible to design an optical fiber that efficiently utilizes DRA.
Keywords :
Raman lasers; optical fibre amplifiers; optical fibre theory; optical transmitters; refractive index; EDFA; distributed Raman amplification transmission system; dopant dependence; effective area; nonlinear impairment; nonlinearities; optimum fiber design; relative index difference; signal-to-noise ratio characteristics; transmission capacity; transmission performance; Erbium-doped fiber amplifier; Fiber nonlinear optics; Nonlinear optics; Optical design; Optical fibers; Optical pumping; Optical refraction; Power system modeling; Signal to noise ratio; Stimulated emission;
Journal_Title :
Photonics Technology Letters, IEEE
DOI :
10.1109/LPT.2003.818641
