Demultiplexer for e.g. optical data transmission, has coupler provided for coupling with input waveguides, where coupler is attached to waveguide array and has section whose cross section reduces towards waveguide array

摘要

The demultiplexer has an input coupler (2a) provided for coupling with input waveguides (5), where the coupler is attached to a waveguide array (3). The input coupler has a section (2b), whose cross section reduces towards the waveguide array. An output coupler (4a) is provided for coupling with two output waveguides (6). The output coupler is attached to the waveguide array. The section of the input coupler has a partially convex cross section.