Investigation on the Gain of Multi wavelength Pumping Broadband Raman Amplifier  

作　　者：WANG Zhi, JIAN Shui sheng (Institute of Lightwave Technology, Northern Jiaotong University, Beijing 100044, CHN) 

出　　处：《Semiconductor Photonics and Technology》2001年第3期129-137,共9页半导体光子学与技术（英文版）

摘　　要：The Stokes spectrum in the stimulated Raman scattering (SRS) is very complicated. In this article, we use both Gaussian and Lorentz approximation to investigate the gain properties of multi pumping broadband Raman amplifier, and present some schemes for flattening the gain. All the results show that the flatness of the gain spectrum is closely related to the pumping frequency grid. By researching the gain properties of Raman amplifiers of such ITU-T fibers as G.652, G.653, G.655 and large effective area non zero dispersion flattening fiber, we find that the Raman gain is associated with the fiber type and its transmission characteristics, especially it decreases with the increase of the effective core area.The Stokes spectrum in the stimulated Raman scattering (SRS) is very complicated. In this article, we use both Gaussian and Lorentz approximation to investigate the gain properties of multi pumping broadband Raman amplifier, and present some schemes for flattening the gain. All the results show that the flatness of the gain spectrum is closely related to the pumping frequency grid. By researching the gain properties of Raman amplifiers of such ITU-T fibers as G.652, G.653, G.655 and large effective area non zero dispersion flattening fiber, we find that the Raman gain is associated with the fiber type and its transmission characteristics, especially it decreases with the increase of the effective core area.

关 键 词：SRS Raman amplifier Multi  wavelength pumping Effective core area 

分 类 号：TN929.11[电子电信—通信与信息系统]