This (6+1)×1 combiner can be used for high power fiber laser and fiber amplifier applications, which can combine 6 pump lasers and 1 signal channel into one fiber and create a high power pump laser source for fiber laser and fiber amplifier.
For some types (6+1)x1 combiner, we build MFA(Mode field adapter) inside, which help customer decease signal loss when link different fibers with different core size and NA.