US 2025/0035846 A1 · REDUCING OPTICAL INTERFERENCE IN INTERFEROMETRIC SENSING SYSTEMS

Abstract

Introduced here is an approach to mitigating (e.g., lessening or eliminating) the high-frequency interference pattern that is caused by uneven surfaces along the coupling interface formed between the waveguide and probe of an interferometric sensing system. The approach is to reduce the high-frequency interference pattern caused by the interference when a waveguide−for example, in the form of an optical fiber−and a probe are directly coupled to one another. Specifically, the coupling surface of the waveguide can be treated, for example, with sandpaper, sandblasting, or acid etching, to create a frosted surface texture. In operation, the frosted surface scatters the light transmitted through the waveguide, preventing the high-frequency interference pattern from occurring.

Claims15

Dependent claims

A method for manufacturing an interferometric sensing system, the method comprising:

acquiring a waveguide to be interconnected between a light source, a detector, and a monolithic substrate;
treating a first end of the waveguide such that roughness of a surface along the first end of the waveguide falls within a predetermined range of values;
optically coupling the first end of the waveguide to a first end of the monolithic substrate such that the waveguide and the monolithic substrate physically contact each other;
and
optically coupling a second end of the waveguide to the light source and the detector.

2 more elements

Dependencies are inferred from the claim text.

Reducing optical interference in interferometric sensing systems

Life of this patent

Reducing optical interference in interferometric sensing systems

Life of this patent

Abstract

Claims15