In this paper, the on-chip beam splitting methods in recent years are reviewed, the research progress, optimization design methods, implementation functions and applications of several main beam splitting methods are introduced, and the applications of on-chip beam . In this paper, the on-chip beam splitting methods in recent years are reviewed, the research progress, optimization design methods, implementation functions and applications of several main beam splitting methods are introduced, and the applications of on-chip beam . Signal attenuation refers to the reduction in the intensity of a light beam as it passes through a medium or a device. In the context of beam splitters, attenuation can occur due to several factors, including absorption, reflection, and scattering. When a beam splitter divides the incoming light. The SPIE Digital Library offers a wide range of resources on beam splitters, focusing on their design, applications, and performance across various optical systems. The library includes research papers, conference proceedings, technical articles, and book chapters that cover both theoretical and. 📦 For purchasing, use the RP Photonics Buyer's Guide for beam splitters. This article and its illustrations will go a long way toward making the correct choice less of a risk. All curves show typical performance. The proposed PBS, which uses the electrically controlled birefringence effects of liquid crystal (LC) and the high diffraction efficiency characteristics of blazed grating, not only can split an incident unpolarized.