Silicon-based dual ARROW power splitters with remote coupling.

In this research, Si-based power splitters based on dual antiresonant reflecting optical waveguides (ARROW) with remote coupling by a separation distance of 30 μm were designed and realized. Characterization of the power splitters with different lengths of the coupling region was performed. Measurement characteristics of fabricated devices with the propagation losses lower than 1.90 dB/cm and the imbalances lower than 0.60 dB show that our dual ARROW power splitters can be efficiently realized.