Abstract

For compact integration of 40 Gbit/s optical frontends a distortion robust detector type is useful, which suppresses effectively all radiated or electromagnetically coupled interference signals from digital circuitry mounted within the same housing. Therefore it is desirable to provide di rectly from the detector two symmetrical electrical signals with inverse polarity at the inputs of the differential amplifier at the demultiplexer stage. In this work we present the first realization and characterization of twin-photodiode modules featuring broadband differential operation at λ = 1.55 µm.

© 2002 Optical Society of America