Fiber optic couplers, also known as fiber optic splitters, are devices used to split or combine optical signals in fiber optic networks. The same kind of device is useful in fiber interferometers, also for combining two. Use a Fiber Optic Splitter to send one signal to many places. This makes your network easy and saves money. Optical couplers are not like electrical devices. They do not send. At YESWEHAVE, our 20+ years of ISO-certified experience mean every fiber optic splitter, fused coupler, and optical isolator we produce meets the high standards required for telecom, biomedical, and defence applications.