Patent ID: 8532444

Claim:
Multiplexer/demultiplexer with a connection for inputting and/or outputting an optical signal which has signal components of different wavelengths, a carrier plate ( 8 ) with at least one wavelength-sensitive element ( 11 ), a focussing member ( 13 ) with at least two focussing elements ( 14 , 14 ′) and a detector or signal-generator plate ( 1 ), on which at least two detectors ( 4 ) or signal generators are arranged, characterized in that the focussing member ( 13 ) has at least one fibre stop, formed integrally with the focussing member for adjusting a waveguide, and is connected to the detector or signal-generator plate ( 1 ) or to the carrier plate ( 8 ) via an elastic connecting element ( 23 ).