Capillary Fiber Bragg Grating - Thin-diameter Fiber Bragg Grating Array - 80μm Coating Diameter FBG - 100μm Thin-diameter FBG

Product Aliases: Femtosecond laser FBG, small-diameter FBG, miniature FBG, polyimide FBG, high-temperature FBG, non-stripped coating FBG.

This product is a customizable fiber bragg grating (FBG) or fiber bragg grating array fabricated on capillary fibers with a coating diameter of 80μm. The fibers can be coated with polyimide or polyacrylate or left uncoated. It can be purchased individually or as an accessory for the OFSCN® Capillary Series Fiber Bragg Grating Temperature Sensors (FBG Thermometers), Fiber Bragg Grating Strain Sensors (FBG Strain Gauges), and Fiber Bragg Grating Stress Sensors (FBG Load Cells).

The parameters listed for the capillary fiber bragg grating (FBG) are for reference only. The parameters may vary slightly when the FBG sensors are fabricated, and customization is available to meet specific user requirements.

Video demonstration of the physical appearance of fiber bragg gratings:

OFSCN® Thin-diameter FBG Parameter List

OFSCN® Thin-diameter FBG Fiber Parameters:

Click here to see the parameters for available OFSCN® Thin-diameter FBG fibers:

300℃ Small diameter optical fiber - SM PI thin fiber - 9/80/100μm polyimide thin fiber - Doped/pure silica core

Features of OFSCN® Thin-diameter FBG:

• Extremely Small Diameter: The fiber diameter is only 100 micrometers, which is smaller than standard fibers. This allows the FBG to be installed in confined spaces or embedded in composite materials without affecting their performance, making it an ideal choice for miniaturized sensing applications.
• Excellent High-Temperature Resistance: The polyimide coating can withstand temperatures up to 300℃ or higher, ensuring the FBG's long-term stability in high-temperature environments. The femtosecond laser writing process does not damage the coating, further preserving this critical characteristic.
• No Coating Stripping Required: The femtosecond laser can write the grating directly into the fiber core through the polyimide coating. This eliminates the traditional process of stripping and recoating, improving production efficiency while avoiding potential damage to the optical fiber and ensuring product reliability.
• Flexible Application: The customizable grating lengths of 2mm, 3mm, 4mm, 5mm, 6mm, and 8mm provide customers with more precise options to meet diverse measurement needs.

Possible Application Scenarios and Industries of OFSCN® Thin-diameter FBG:

Given its outstanding miniaturization, high reliability, and high-temperature resistance, this FBG/FBG array is well-suited for various specialized and demanding applications.

Application Scenarios Examples of OFSCN® Thin-diameter FBG:

• Packaged for Use: It can be used as the core sensing element in packaged miniature sensors for:
  • Medical Devices: Used for stress and temperature monitoring in minimally invasive surgical tools, or embedded in catheters for physiological parameter measurement.
  • Composite Materials: Embedded in carbon fiber, fiberglass, and other composite materials to monitor internal strain and temperature, enabling structural health monitoring.
  • Miniature Equipment: Installed in precision instruments or miniature devices with limited space to measure parameters like vibration and strain.
• Used Directly Without Packaging: In laboratory or research settings, this FBG can be used directly for:
  • Micro-stress/strain Measurement: Measuring parameters like stress, strain, and displacement in experiments where space is limited or high precision is required.
• High-Temperature and High-Pressure Microfluidics Research: Used to monitor temperature or stress changes within microfluidic chips, high-temperature reactors, and other miniature devices.