  Extreme skin depth engineering (e-skid) can be applied to integrated
photonics to manipulate the evanescent field of a waveguide. Here we
demonstrate that e-skid can be implemented in two directions in order to
deterministically engineer the evanescent wave allowing for dense integration
with enhanced functionalities. In particular, by increasing the skin depth, we
enable the creation of large gap, bendless directional couplers with large
operational bandwidth. Here we experimentally validate two-dimensional e-skid
for integrated photonics in a CMOS photonics foundry and demonstrate strong
coupling with a gap of 1.44 {\mu}m.
