  We propose new planar X-junctions and multi-port devices written by spatial
solitons, which are composed of two (or more) nonlinearly coupled components in
Kerr-type media. Such devices have no radiation losses at a given wavelength.
We demonstrate that, for the same relative angle between the channels of the
X-junctions, one can vary the transmission coefficients into the output
channels by adjusting the polarizations of multi-component solitons. We
determine analytically the transmission properties and suggest two types of
experimental embodiments of the proposed device.
