Selection device for converting optical input signal into electrical output signal, has demultiplexer with transmission characteristic whose transmission maxima lie in flank region of transmission characteristic of edge filter arrangement

摘要

The device (1) has a fiber input (7) at which a fiber optical waveguide (2) is attachable. An edge filter arrangement (18) includes an edge filter input (17) and an edge filter output (19), where the input and output are respectively assigned to an output (15) of a demultiplexer (9) and to one of photodetectors (21). Transmission maxima of a transmission characteristic of the demultiplexer lie in a flank region of transmission points of a transmission characteristic of the edge filter arrangement. An independent claim is also included for a method for production of a device for converting an optical input signal into an electrical output signal.