Analysis of the wavelength and linewidth dependence of Brillouin gain spectrum in optical fiber

광섬유에서 브릴루앙 이득 스펙트럼의 파장과 선폭에 따른 의존성 연구

Since stimulated Brillouin scattering (SBS) impact wavelength division multiplexing (WDM) optical transmission systems, it is important to understand the implication of SBS in the design of such lightwave systems. Therefore, Brillouin gain spectrum (BGS) is measured to characterize the effect of SBS in optical fiber. The Brillouin gain coefficient is found to vary as the wavelength and linewidth of source. Theoretically measurement of BGS shows a dependence on wavelength(λ) and on linewidth(Δν), respectively.