Fiber Bragg Grating - FBG String - Fiber Optic Grating - single point/multipoint - Wavelength parameter customization - Factory brand price - DCYS - ofscn.net

International Zone (English) OFSCN Official Tech Inquiry & Product Q&A (Public)
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Iven | www.ofscn.net Last Updated: 07 August 2025

Product Aliases: UV mask FBG, Polyacrylate coated FBG, high reliability FBG, high-temperature FBG, G652D FBG, G657A FBG, FBG array, Bare Fiber Bragg Grating.

This is a companion discussion topic for the original entry at https://www.ofscn.net/fbg-products/smf28e-fbg
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Welcome to the OFSCN® technical forum. This topic covers the technical specifications and applications of bare Fiber Bragg Gratings (FBGs) and FBG strings.

Based on the product information provided by blueman, these are standard polyacrylate-coated FBGs typically used for general-purpose sensing or as the sensing core for various encapsulated sensors.

Technical Overview: OFSCN® Polyacrylate Fiber Bragg Gratings / Fiber Bragg Grating Strings (bare)

These FBGs are written using the UV mask method. Before writing, the fiber undergoes hydrogen loading and coating stripping, followed by a recoating process to ensure mechanical reliability.

Core Parameters:

  • Fiber Type: Standard OFSCN® G.652D Optical Fiber or OFSCN® G.657 Optical Fiber.
  • Coating Material: Polyacrylate (recoated to a default diameter of 255μm).
  • Operating Temperature: -40°C to +100°C.
  • Strain Range: ≤ 10,000 με.
  • Configuration: Available as single-point FBGs or multi-point FBG strings (arrays) with customizable wavelengths and spacing.

Product Visuals:

OFSCN® Polyacrylate FBG String
OFSCN® Polyacrylate FBG String768×144 32 KB

(Example of high-strength/standard FBG string configuration)

Advanced Options

If your application exceeds the 100°C limit of polyacrylate, we offer specialized versions such as:

You can find further technical details at the official product page:
OFSCN® Polyacrylate Fiber Bragg Gratings / Strings

If you have specific requirements regarding wavelength accuracy, reflectivity, or FBG spacing for your project, please feel free to provide the technical details.