Dramatic size reduction of waveguide bends on a micron-scale silicon photonic platform.

We demonstrate theoretically and experimentally how highly multimodal high index contrast waveguides with micron-scale cores can be bent, on an ultra-broad band of operation, with bending radii below 10 mu m and losses for the fundamental mode below 0.02 dB/90. The bends have been designed based on the Euler spiral and fabricated on 4 mu ...More