Patent ID: 7639908
Filing Date: 2009-12-29
Classification: G02B,H04J

Abstract:
1. A data transmission device comprising: an input Free Propagation Region (FPR) receiving a multi-wavelength signal and a single-wavelength signal from different input waveguides; a first set of arrayed waveguides coupled to the input FPR to carry the wavelengths in the multi-wavelength signal; a second set of arrayed waveguides coupled to the input FPR to create multiple copies of the single-wavelength signal; and an output FPR having an output plane, the output plane receiving the wavelengths from the first set of arrayed waveguides and the copies of the single-wavelength signal from the second set of arrayed waveguides, wherein one of the wavelengths from the first set of arrayed waveguides and one of the copies from the second set of arrayed waveguides focus onto the same position on the output plane.