1) Telecommunications equipment 
In telecommunications, a mode scrambler mode mixer is a device for inducing mode coupling in an optical fiber, or a device that, itself, exhibits a uniform output intensity profile independent of the input mode volume or modal excitation condition. Mode scramblers are used to provide a modal distribution that is independent of the optical source f...
a device for producing transfer of power between modes in an optical fibre, effectively scrambling the modes NOTE - Frequently used to provide a mode distribution that is independent of source characteristics.
A unit containing one or more optical fibres in which strong mode coupling occurs. Normally used as a means of providing a mode distribution independent of source characteristics.