Change the method of phase characteristics and strength properties in a multi-mode interference coupler

摘要

(57) [summary] The present invention relates to the field of communication technology and integrated optics. Combiner and a small beam splitter that is integrated is very important here. I can run in a so-called multi-mode interference type coupler this optical function. Is divided equally input of a predetermined number of over the output side of all this case. Have a large manufacturing deviations, the component is dependent on the polarization in a good approximation. Phase distribution and intensity distribution at the output side is fixed in the MMI coupler with conventional parallel edges. However means that can be controlled by controlling the distribution of these is required in many applications. The present invention provides a method of controlling the change of the phase characteristics and strength properties at the output side of the MMI coupler. In this case, MMI couplers conventionally is divided into a plurality of sections first. Each of these sections are converted separately, a self-imaging properties continue to be held thereby. These sections are arranged in series at the back end. Combiner and beam splitter, which is a variety of controls can be obtained by appropriate choice of conversion. Change of properties in the controller an acceptable simple geometric parameters.