The 1×1 Fiber-optic Rotary Joint is the simplest and our most popular connectorized rotary joint.
Its optical system is designed for the visible spectrum and for optical fibers with core diameters of up to 400 µm and numerical apertures of up to 0.5.
It is mostly used in optogenetics experiments as a part of a fiber-optic tether to a freely behaving lab animal.