Analytical Approach of Brillouin Fiber Amplifier Gain up to 2 km Long Fibers

In order to obtain analytical gain expression in Brillouin optical Fiber Amplifiers (BFAs), coupled intensity equations describing the interaction of pump and stokes waves must be solved simultaneously. For long optical fibers, although fiber loss is responsible for the pump depletion and nonnegligible effect, for short optical fibers less than 2 km, its effect can be discarded. In this paper, we provide an accurate analytic expression for the BFA gain for fiber lengths less than 2 km by discarding the optical fiber loss and show results of experimental validation.

2 km’ye kadar olan Brillouin Fiber Kuvvetlendiricilerde Kazancın analitik ifadesinin elde edilmesi

Brillouin Fiber Kuvvetlendirici (BFK) kazancının analitik ifadesini elde etmek için, pompa ve Stokes dalgalarının etkileşimini tanımlayan denklemlerin çözümü gerekmektedir. Uzun optik fiberler için fiber kaybı, pompa lazerini tüketmesi nedeniyle ihmal edilemez bir parametre olmasına rağmen, 2 km'den kısa BFK’ de etkisi ihmal edilebilir. Bu makalede, optik fiber kaybı ihmal edilerek, 2 km'den daha kısa optik fiberler için BFK kazancı analitik olarak ifade edilerek, bu ifadenin doğruluğu deneysel olarak gösterilmiştir.

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