---
publication_id: "OT-2026-000000378"
title: "Fiber Bragg grating curvature sensing test device and test method thereof"
published_at: "2026-09-15T19:02:48.795213Z"
canonical_url: "https://opentechnical.org/p/OT-2026-000000378"
categories:
  - "sensors-controls-machine-vision/position-and-presence-sensing"
keywords:
  - "g01b11/24"
  - "g01b11/165"
  - "g01l1/246"
---

# Fiber Bragg grating curvature sensing test device and test method thereof

## Abstract

An FBG curvature sensing test device and a test method thereof are provided. The test device includes a test platform, an FBG demodulator, and a computer. The test platform includes an optical plate and two constraint components, test pieces are connected between two constraint components, where the constraint component includes an X-axis displacement stage, a Z-axis rotation stage and a fixture, the X-axis displacement stage is connected to the optical plate and can move along an X-axis direction, one end of the Z-axis rotation stage is connected to the X-axis displacement stage, and the other end of the Z-axis rotation stage is connected to the fixture; the FBG demodulator is configured to convert an optical signal of a wavelength change monitored by the FBG test line based on the deformation of the test piece into an electrical signal; the computer is coupled to the FBG demodulator.