Signal wirings 22, 23 are formed on a pair of substrates 20, 21, and the substrates are joined together through an insulating layer 24 so that the signal wirings 22, 23 are placed in parallel and facing to each other. In one preferred embodiment, the method includes the steps of initializing a modem by calculating loop-to-loop channel transfer functions and noise power spectral densities at a corresponding receiver, and taking into account cross-talk between loops in the process of allocation so as to maximize total data rates within the binder. As a result, extrusion of the sealing ring through the gap provided between the two components to be sealed is prevented. Configuration of the second subset of the set of nonlinear elements may be used for various optical processing operations, such as all-optical 2R or 3R regeneration, wavelength conversion, data format conversion, demultiplexing, clock recovery, logic operations and dispersion compensation.