The profitable conclusion can be deduced: the on/off gain of the DFRA with one splice loss less than 0.092dB per 3km, (the whole length does not exceed 120km) will not descend to the 90% on/off gain of the DFRA with no splice.

• 最后得出对实际DFRA设计十分有益的结论:当每3公里一个熔接点损耗系数小于0.；092dB 时(实际系统中最坏情况下损耗有0