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Detector remodulator and optoelectronic switch

  • US 10,231,038 B2
  • Filed: 02/24/2015
  • Issued: 03/12/2019
  • Est. Priority Date: 02/24/2014
  • Status: Active Grant
First Claim
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1. A silicon-on-insulator chip comprising:

  • a first arrayed waveguide grating (AWG) comprising a plurality of waveguides in a plane, one or more inputs, and one or more outputs; and

    a first array of detector remodulators (DRMs),each of the DRMs comprising;

    a detector;

    a modulator; and

    a CMOS circuit connected in cascade between the detector and the modulator,the detector being configured to convert an input modulated optical signal to an electrical signal and comprising a first semiconductor junction arranged in the plane and the modulator being configured to modulate an output optical signal using the electrical signal and comprising a modulation waveguide region at which a second semiconductor junction is set horizontally across the modulation waveguide region in that the second semiconductor junction comprises a first doped region of the modulation waveguide region and a second doped region of the modulation waveguide region which is on an opposite side of the modulation waveguide region to the first doped region in a horizontal direction;

    the first array of DRMs being in a planar arrangement with the first AWG such that the modulators of the DRMs are located within the plane; and

    wherein each DRM is located at an input or output of the AWG,wherein an input waveguide for the input modulated optical signal for one or more of the DRMs lies within the plane.

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