Patent ID: 11892367
Assignee: APPLIED MATERIALS, INC.
Field: Measurement (Instruments)
Classification: CPC G | IPC G

Claim 0:
1. A method of optical device metrology comprising:
introducing a first type of light into a first optical device during a first time period, the first optical device comprising an optical substrate and an optical film disposed on the optical substrate, the first optical device including a first surface, a second surface, and one or more sides connecting the first surface with the second surface;
measuring, during the first time period, a quantity of the first type of light transmitted from a plurality of locations on the first surface or the second surface during the first time period, wherein the measuring is performed by a detector coupled to one or more fiber heads positioned to collect the light transmitted from the plurality of locations; and
determining a magnitude between successive peaks and troughs in the measurements along the first surface or the second surface to determine a relative amount of optical loss due to scattering and a relative amount of optical loss due to absorption.