Additionally, beamsplitters can function bidirectionally, combining two beams from different directions into a single output beam. Achieved by applying a thin dielectric (metallic) coating to the surface of a transparent material, typically glass. It is a crucial part of many optical experimental and measurement systems, such as interferometers, also finding widespread application in fibre optic telecommunications. The thickness of the coating determines the. A beamsplitter is a common optical component that partially transmits and partially reflects an incident light beam, usually in unequal proportions. Note that jT j2 is the transmitted intensity.
