G01D 5/38 (20130101)
In some embodiments, a system for evaluating coupled components includes a first diffraction grating provided on a first component, a second diffraction grating provided on a second component, a light source that emits light having a wavelength that is larger than the grating periods of the first and second diffraction gratings, and a photodetector that senses the intensity of the light after it passes through the diffraction gratings.
Rogers, Al-Aakhir Ahad and Bhansali, Shekhar, "Systems and methods for evaluating coupled components" (2016). USF Patents. 834.
University of South Florida