Abstract: A system concept is provided for optical and/or optoelectronic integration that is based on coupling two or more waveguide detectors that are tunable to the same optical waveguide. This common optical waveguide can be regarded as an optical bus. The detectors each have two waveguide ends that are coupled to the optical bus, and light in the detectors that is not absorbed can propagate from the waveguide detectors to the optical bus. A preferred approach for implementing such coupling of detectors to the optical bus is the use of 3-D waveguide tapers between the detectors and the optical bus. Tuning the detectors in such a configuration can provide numerous useful functions.