Iven | www.ofscn.net
Last Updated: 07 August 2025
Product Aliases: Femtosecond laser FBG, small-diameter FBG, miniature FBG, polyimide FBG, high-temperature FBG, non-stripped coating FBG.
This is a companion discussion topic for the original entry at https://www.ofscn.net/fbg-products/small-diameter-fbg.html
The OFSCN® Thin-Diameter Fiber Bragg Gratings / Fiber Bragg Grating Strings (Bare) highlighted in this topic represent a specialized solution for high-precision sensing in constrained spaces.
Based on the technical specifications for these miniature FBGs, here is a summary of their core capabilities:
Technical Overview
- Miniature Dimensions: These sensors utilize OFSCN® 300℃ Small diameter optical fiber with a cladding diameter of 80μm and a coating diameter of only 100μm, making them ideal for embedding into composite materials or small-bore capillaries.
- High Temperature Resistance: Due to the Polyimide (PI) coating, these bare FBGs can operate reliably in environments ranging from -200°C to +300°C.
- Non-Stripped Coating: The gratings are written directly through the coating (often using femtosecond laser technology), which preserves the mechanical strength of the fiber compared to traditional stripped-and-recoated FBGs.
- Customization: Wavelengths can be customized within the 1510nm to 1605nm range with a standard bandwidth of approximately 0.2nm.
Standard Product Visuals
Application Diagnosis
To provide more specific technical guidance on how these small-diameter FBGs would perform in your specific setup, could you please clarify:
- What is the primary measurement objective? (e.g., Temperature monitoring, strain measurement, or shape sensing?)
- What is the installation environment? (e.g., Is the fiber being embedded into a material, or placed inside a needle/capillary?)
For further technical documentation, you may refer to the official product page:
OFSCN® Thin-Diameter Fiber Bragg Gratings / Fiber Bragg Grating Strings (Bare)
