Patent ID: 8682114
Filing Date: 2014-03-25
Classification: G02B

Abstract:
1. An optical device, comprising: a substrate; a slab provided on the substrate; a first waveguide provided on the substrate and extending from a first portion of the slab, the first waveguide supplying a first plurality of optical signals to the first portion of the slab; a plurality of second waveguides, each of the plurality of second waveguides having a first end and a second end, the first ends of the plurality of second waveguides being optically coupled to a second portion of the slab, and the second ends of the plurality of second waveguides being optically coupled to a third portion of the slab; a plurality of third waveguides provided on the substrate and extending from a fourth portion of the slab, each of the plurality of third waveguides directing a corresponding one of the first plurality of optical signals away from the slab; a fourth waveguide extending from the fourth portion of the slab, the fourth waveguide supplying a second plurality of optical signals to the fourth portion of the slab; a plurality of fifth waveguides extending from the first portion of the slab, each of the plurality of fifth waveguides directing a corresponding one of the second plurality of optical signals away from the slab; a first optical hybrid circuit configured to receive one of the first plurality of optical signals from one of the plurality of third waveguides and a first local oscillator signal, and process the one of the first plurality of optical signals based on the first local oscillator signal; and a second optical hybrid circuit configured to receive one of the second plurality of optical signals from one of the plurality of fifth waveguides and a second local oscillator signal, and process the one of the second plurality of optical signals based on the second local oscillator signal.