Abstract:We point out the limitation of using an approximate gain profile in designing distributedfiber Raman amplifier (FRA) and design a broadband FRA based on the measured gain profile. A design of discrete amplifiers for ultra-long-haul transmission is also reported by optimizing the combination of DCF and S F f i b e r s .Based on the approximate Raman gain profile, we designed a pumping scheme for a distributed FRA system to have flat bandwidth of IOOnm wide, as shown in Fig. 1. However, when we replace the appro… Show more
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