Stimulated Raman Scattering in Optical Fibers

Yasuji OHMORI  Yutaka SASAKI  Takao EDAHIRO  

IEICE TRANSACTIONS (1976-1990)   Vol.E66   No.2   pp.146-152
Publication Date: 1983/02/25
Online ISSN: 
Print ISSN: 0000-0000
Type of Manuscript: PAPER
Category: Optical and Quantum Electronics

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Stimulated Raman scattering was investigated in optical fibers, pumped by a mode-locked and Q-switched Nd:YAG laser or a CW Nd:YAG laser. The critical powers for the first five Stokes, at which each Stokes begins to build up, decreased with an increase in the length of fiber and became constant values above 200 meter long in the case of a mode-locked and Q-switched pump. The first and the second Stokes were observed with 0.6 W and 2.1 W of CW pump power input, respectively, in a 35 km single-span fiber. Experiments showed that the pulse wave separation effect played an important role in stimulated Raman scattering characteristics of optical fibers.