Power splitters with different output power levels built with two-dimensional photonic crystals

Abstract

A kind of novel power splitter built with two-dimensional photonic crystals based on directional coupling is proposed. Different output power levels are achieved by changing the coupling length. The distribution of light intensity in the coupling waveguides is investigated and the dependence of transmission on coupling length is provided. A good agreement between the theoretical and experimental output transmissions is shown. With the low-loss bends, a total transmission up to ∼0.96 is achieved. The power in each branch can be easily further split. © 2006 Society of Photo-Optical Instrumentation Engineers.