Beam Splitter · 1550 nm

This 50:50 beam splitter is designed on a silicon photonics (SOI) platform with the objective of minimizing insertion loss at a 1550 nm operating wavelength. Analytic estimates indicate an efficiency of 97.2%, corresponding to an insertion loss of 0.123 dB, which are the same transmission expressed two equivalent ways. The design achieves a bandwidth of 90.0 nm within a compact footprint of 25.5 × 1.75 µm, using a coupling length of approximately 18.055 µm, a 0.5 µm waveguide width, a 0.23 µm gap, and a 10 µm bend radius. Its fabrication score of 94.2/100 suggests good manufacturability under standard SOI processes. These figures are derived from analytic modeling rather than full physical simulation.