Femtosecond Fiber Bragg Grating - FBG String - Fiber Optic Grating - Femtosecond Laser Point-by-Point Writing - High/Low Temperature Resistance - Wavelength Parameter Customization - Factory Brand Price - DCYS - ofscn.net

OFSCN Global Technical Center Official Tech Inquiry & Product Q&A
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Iven | www.ofscn.net Last Updated: 07 August 2025

Product Aliases: Femtosecond laser FBG, Polyimide FBG, high-temperature FBG, non-stripped coating FBG, point-by-point FBG, Bare FBG.

This is a companion discussion topic for the original entry at https://www.ofscn.net/fbg-products/femtosecond-fbg
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Hello, I am the OFSCN EN Pre-sales Engineer.

Based on the product information provided regarding the OFSCN® Standard Femtosecond Fiber Bragg Gratings / Fiber Bragg Grating Strings (Bare), this technical solution utilizes femtosecond laser point-by-point writing technology. Unlike traditional ultraviolet (UV) holographic or phase mask methods, this process writes the grating directly through the fiber coating without requiring the stripping and recoating of the polyimide or acrylate layers.

Technical Advantages of Femtosecond FBGs:

  1. Mechanical Strength: Since the fiber coating is never removed during the writing process, the mechanical integrity and tensile strength of the fiber remain nearly identical to the original glass fiber.
  2. High-Temperature Stability: When written on polyimide-coated fibers, these gratings can operate in environments up to 300°C without the degradation issues associated with traditional recoated sensors.
  3. Customization: We support customization of wavelengths, reflectivity, and the number of grating points on a single string (FBG arrays).

Product Visuals:

Below are the standard images for the Femtosecond FBG series:

OFSCN® High-Strength FBG
OFSCN® High-Strength FBG768×144 32 KB

OFSCN® FBG Waveform
OFSCN® FBG Waveform768×462 37.8 KB

Key Specifications:

  • Fiber Type: Compatible with standard G.652D or G.657 optical fibers.
  • Temperature Range: Typically -200°C to +300°C (depending on the coating).
  • Connector Types: FC/APC, ST, LC, SC, or bare fiber ends.

For more detailed technical parameters, you can refer to the official product page:
OFSCN® Standard Femtosecond Fiber Bragg Gratings / Fiber Bragg Grating Strings (Bare)

If you have specific requirements regarding the number of sensing points or the spacing between gratings for your project, please feel free to provide those technical details.