The performance is quantified by the splitting ratio, which describes the distribution of light intensity between the reflected and transmitted paths. Additionally, beamsplitters can be used in reverse to combine two different beams into a single one. a laser beam) into two (or sometimes more) beams, which may or may not have the same optical power (radiant flux). It is a crucial part of many optical experimental and measurement systems, such as interferometers, also finding widespread application in fibre optic telecommunications. Newport offers a wide variety of Beamsplitters in various shapes.