Beamsplitters are optical components used to split input light into two separate parts. In the application scenario of beam combining, different beams overlap in both near-field and far-field spaces and are synthesized into a single aperture light source output. Top-Hat Beam Shapers convert a single mode beam into a uniform intensity beam of any desired shape and size. For multi mode beams, we offer Diffractive or. This paper reviews the on-chip beam splitting methods in recent years, which are mainly divided into the following categories: y-branch, multimode interference coupling, directional coupling, and inverse design. This paper introduces their research status, including optimization design methods. For applications that require a beam to be split or reflected, Thorlabs offers polarizing beamsplitter cubes and non-polarizing beamsplitter plates mounted on kinematic bases that are compatible with our FiberBench systems. It is a crucial part of many optical experimental and measurement systems, such as interferometers, also finding widespread application in fibre optic telecommunications.
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