NON-LINEAR OPTICAL COUPLER

摘要

An integrated optics non linear coupler presents on a surface a first and a second waveguide (2, 3) coupled contradirectionally by means of a distribute d feedback grating (10). The first waveguide (2) defines an input port (4) and a first output port (5) of the device (transmission output) and the second waveguide (3) defines a second output port (6) of the device (reflection out put). By means of an optical control signal injected into the device together with an information signal, the device can be brought to conditions of non-linear operation, thus making the grating (10) switch from transmitting to reflecti ng behaviour or vice versa with respect to a given wavelength. (FIGURE 1)