Official websites use .gov
A
.gov website belongs to an official
government organization in the United States.
Secure .gov websites use HTTPS
A lock (
) or https:// means you've safely
connected to the .gov website. Share sensitive
information only on official, secure websites.
Young interferometer as described in [21]. Light from a light source is coupled into the waveguide sensor chip by a grating after being split in two beams by a double slit. The two beams are guided separately down the waveguide, forming sensing and reference path, and coupled out by a second grating. The interference pattern is recorded behind another double slit by a CCD line sensor.
