About Fiber Optic Rotary Joints
Fiber optic rotary joints (FORJ) are the optical equivalent of electrical slip rings. Fiber optic rotary joints (FORJ) enable uninterrupted transmission of an optical signal while rotating along the fiber axis. There are many different types of FORJs. Examples include a single-channel FORJ, multi-channel FORJ and hybrid FORJ. Single and dual channel FORJs are cost and size efficient. If more than two fibers are present in a system, multiplexing solutions are available which combine multiple channels onto one or two fibers and allow the use of one or two channel FORJs. Single channel fiber optical rotary joints have only one output channel for a single input channel where as multi channel FORJs can have more than one output channel for a single input channel. Hybrid FORJs have both optical and electrical channels. Other fiber optic rotary joints (FORJ) are commonly available.
Engineering Web: Fiber Optic Rotary Joints - Machine Design
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