Editing Mode scrambler (section)

{{Too technical|date=May 2024}}

In [[telecommunications]], a '''mode scrambler''' or '''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]] for purposes of laboratory, manufacturing, or field measurements or tests. Mode scramblers are primarily used to improve reproducibility of multimode fiber bandwidth measurements.