Transmission of pillar-based photonic crystal waveguides in InP technology

Waveguides based on line defects in pillar photonic crystals have been fabricated in InP/InGaAsP/InP technology. Transmission measurements of different line defects are reported. The results can be explained by comparison with two-dimensional band diagram simulations. The losses increase substantially at mode crossings and in the slow light regime. The agreement with the band diagrams implies a good control on the dimensions of the fabricated features, which is an important step in the actual application of these devices in photonic integrated circuit

Short polarization filter in pillar-based photonic crystals

The strong polarization dependence of two- dimensional photonic crystals is exploited for polarization filtering. The device with a length of 3.9 μm is integrated in a photonic integrated circuit based on InP waveguide technology. The average transmissi