Patent ID: 9588289
Date: 2017-03-07
CPC Classifications: B01L,G01N,G02B,H01L

Claim:
1. A method of forming a semiconductor structure, said method comprising: forming a first optical waveguide and a second optical waveguide on a sapphire substrate, wherein the first optical waveguide and the second optical waveguide each include a core portion of gallium nitride (GaN), and a cladding layer laterally surrounding the core portion, wherein the cladding layer includes a material having a refractive index less than a refractive index of the sapphire substrate; etching a portion of the cladding layer to form a microfluidic channel in the cladding layer; and forming a capping layer on a top surface of the first optical waveguide, the second optical waveguide and the microfluidic channel, wherein the cladding layer and the capping layer each include one of silicon oxide (SiO