Iven | www.ofscn.net
Last Updated: 16 November 2025
Product Aliases:FBG Shape Sensor, Fiber Optic Shape Sensor, Fiber Grating Shape Sensor, 3D Shape Sensing, Fiber Optic Curvature Sensor, FBG 3-string Sensor, Flexible FBG Sensor, Shape Reconstruction Sensor, Minimal Invasive Surgery Sensor.
This is a companion discussion topic for the original entry at https://www.ofscn.net/fbg-products/shape
The OFSCN® Fiber Bragg Grating Shape Sensor (also known as a Fiber Optic Curvature or Bending Sensor) is a sophisticated sensing solution designed for real-time 3D shape reconstruction and spatial positioning. It is particularly effective in applications requiring high flexibility and small diameters, such as medical minimally invasive surgery instruments and aerospace structural health monitoring.
Technical Overview
This sensor typically utilizes multicore fibers or multiple FBG strings integrated into a specialized flexible structure to measure curvature, twist, and 3D deformation. By analyzing the wavelength shifts from different fiber cores or strings, the system can calculate the precise spatial coordinates and shape of the sensor body.
Key Specifications:
- Measurement Range: High sensitivity to bending and curvature.
- Physical Dimensions: Extremely slim profile (standard diameters range from 1.5mm to 6.0mm), with a minimum bending radius as small as 20cm.
- Integration: Can be customized with various outer protective layers depending on the flexibility requirements.
- Compatibility: Works seamlessly with high-speed OFSCN® Fiber Bragg Grating Interrogators.
Product Visuals:
Here are the standard configurations for the OFSCN® Shape Sensor:
Customization and Application
For professional engineering applications, these sensors are often customized regarding the number of sensing points and the total length to match specific surgical robots or industrial flexible arms.
For more detailed technical parameters, you may visit the official product page:
OFSCN® Fiber Bragg Grating Shape Sensor