Is the loss high in secondary beam splitters
In its most common form, a cube, a beam splitter is made from two triangular glass which are glued together at their base using polyester,, or urethane-based adhesives. Devices with metallic coatings typically exhibit higher losses, while those with dichroic coatings can achieve minimal losses. A beam splitter or beamsplitter is an optical device that splits a beam of light into a transmitted and a reflected beam. It is a crucial part of many optical experimental and measurement systems, such as interferometers, also finding widespread application in fibre optic telecommunications. In fl integrated optics, waveguide directional couplers behave as beam splitters (see Chap.
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