Patent ID: 9678012
Date: 2017-06-13
CPC Classifications: C12Q,G01N

Claim:
1. An integrated device comprising: a plurality of sample wells on a surface of the integrated device, wherein a sample well of the plurality of sample wells is configured to receive a sample; a first grating coupler configured to receive excitation energy from an external optical source; a reflective layer positioned to reflect light towards the first grating coupler, wherein the reflective layer includes four openings; four sensors, each of the four sensors positioned to receive light through one of the four openings of the reflective layer, wherein signals from the four sensors provide an indication of alignment of the external optical source to the first grating coupler; and a plurality of waveguides, wherein a first waveguide of the plurality of waveguides and a second waveguide of the plurality of waveguides are optically coupled to the first grating coupler, wherein the first waveguide and the second waveguide are configured to receive excitation energy from the first grating coupler and deliver the excitation energy to at least a portion of the plurality of sample wells.