Patent ID: 8655120
Filing Date: 2014-02-18
Classification: G02B

Abstract:
1. A multi-chip module (MCM), comprising: integrated circuits configured to receive optical signals from a set of light sources, which have fixed carrier wavelengths, wherein a given integrated circuit includes: first optical waveguides, optically coupled to the integrated circuits, to convey modulated optical signals from transmitters in the integrated circuits; second optical waveguides, optically coupled to the first optical waveguides, to convey the modulated optical signals; tunable drop filters optically coupled to the second optical waveguides and associated integrated circuit, wherein the tunable drop filters are configured to pass adjustable bands of wavelengths to receivers in the integrated circuits, and wherein a given adjustable band of wavelengths of a given tunable drop filter associated with the given integrated circuit includes one of the carrier wavelengths; and control logic configured to provide a control signal to the tunable drop filters to specify the adjustable bands of wavelengths, thereby defining routing of at least the one of the optical signals in the MCM during communication between at least a pair of the integrated circuits.