---
publication_id: "OT-2026-000000873"
title: "Multi-channel self-mixing interferometric sensor"
published_at: "2026-09-15T19:03:31.497449Z"
canonical_url: "https://opentechnical.org/p/OT-2026-000000873"
categories:
  - "sensors-controls-machine-vision/position-and-presence-sensing"
keywords:
  - "g01b9/02092"
  - "g01b2290/45"
  - "g01b2290/70"
  - "g01b9/02007"
---

# Multi-channel self-mixing interferometric sensor

## Abstract

A multi-channel SMI sensor includes an emitter configured to emit light having different polarizations and a polarization-selective lens for directing light having different polarizations towards different locations. The multi-channel SMI sensor is configured to measure physical phenomena at two different locations with a small footprint.