Communications system optical mixer - has uniform division of input through transparent walled cylinder constructed according to given mathematical relationship

摘要

A mixer is used for optical communications systems. There may be many individual communication links between a network of stations. The mixer provides a uniform division of an input beam to is output face. The mixer consists of a cylinder of transparent material with end faces square to the cylinder axis. The cylinder length (L) is given by a mathematical formula where (THTA is the tube acceptance angle, (nO) the refractive index of the incoming light medium, (R) is the external dia. of the tube and (nL) is the refractive index of the tube material. One end face has a light reflecting plating and the surrounding and internal mediums (N2) have a refractive index the tube material.