Optical beamsplitters allow the beam to be divided into multiple segments that can be individually diverted with other inputs. This provides more options for directing and shaping the light beam. It is a crucial part of many optical experimental and measurement systems, such as interferometers, also finding widespread application in fibre optic telecommunications. Beamsplitters are often classified according to their construction: cube or plate. A beam splitter or beamsplitter is an optical device that splits a beam of light into a transmitted and a reflected beam. a laser beam) into two (or sometimes more) beams, which may or may not have the same optical power (radiant flux).
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