Beam splitters set the efficiency, accuracy, and usable spectral range of an infrared spectrometer. Beamsplitters separate incident light into two or more beams of the same wavelength. These exiting beams are differentiated by either their optical power (non-polarizing) or polarization states (polarizing). 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, power splitter) is an optical device which can split an incident light beam (e. Different types of beam splitters exist, as described in the. Plate beamsplitters are made using a coated substrate, and thus exhibit beam offset and ghost reflections from the second surface.
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