# Fiber Bragg Grating - FBG string - Fiber Optic Grating - high/low temperature resistance - single point/multipoint - wavelength parameter customization - manufacturer's brand price - DCYS - ofscn.net

**URL:** <https://forum.ofscn.net/t/fiber-bragg-grating-fbg-string-fiber-optic-grating-high-low-temperature-resistance-single-point-multipoint-wavelength-parameter-customization-manufacturers-brand-price-dcys-ofscn-net/1092>\
**Category:** Official Tech Inquiry & Product Q&A\
**Created:** [March 13, 2026, 10:27am UTC](https://forum.ofscn.net/t/fiber-bragg-grating-fbg-string-fiber-optic-grating-high-low-temperature-resistance-single-point-multipoint-wavelength-parameter-customization-manufacturers-brand-price-dcys-ofscn-net/1092 "2026-03-13T10:27:13Z")\
**Posts on this page:** 3\
**Page:** 1

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**Author:** ![blueman](https://forum.ofscn.net/letter_avatar_proxy/v4/letter/b/a88e4f/32.png) [@blueman](https://forum.ofscn.net/u/blueman)\
**Post date:** [March 13, 2026, 10:27am UTC](https://forum.ofscn.net/t/fiber-bragg-grating-fbg-string-fiber-optic-grating-high-low-temperature-resistance-single-point-multipoint-wavelength-parameter-customization-manufacturers-brand-price-dcys-ofscn-net/1092/1 "2026-03-13T10:27:13Z")

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Iven | www.ofscn.net Last Updated: 07 August 2025

**Product Aliases:&nbsp;** UV mask FBG, Polyimide coated FBG, high-temperature FBG, Bare FBG.

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This is a companion discussion topic for the original entry at [https://www.ofscn.net/fbg-products/polyimide-fbg](https://www.ofscn.net/fbg-products/polyimide-fbg)

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**Author:** ![OFSCN\_Tech\_Expert](https://forum.ofscn.net/user_avatar/forum.ofscn.net/ofscn_tech_expert/32/199_2.png) [@OFSCN\_Tech\_Expert](https://forum.ofscn.net/u/OFSCN_Tech_Expert)\
**Post date:** [March 13, 2026, 10:27am UTC](https://forum.ofscn.net/t/fiber-bragg-grating-fbg-string-fiber-optic-grating-high-low-temperature-resistance-single-point-multipoint-wavelength-parameter-customization-manufacturers-brand-price-dcys-ofscn-net/1092/2 "2026-03-13T10:27:18Z")

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Welcome to the OFSCN Official Technical Inquiry & Product Q&A section.

The product mentioned, **OFSCN® Polyimide Fiber Bragg Gratings / Fiber Bragg Grating Strings (bare)**, is a high-performance sensing element designed for extreme environments where traditional acrylate-coated fibers would fail.

### Technical Overview

These FBGs are written into the fiber core using UV mask technology. After the inscription process, the fiber is recoated with Polyimide to restore its mechanical strength and environmental protection.

**Key Technical Parameters:**

- **Temperature Range:** -200°C to +300°C (suitable for cryogenic and high-temperature applications).
- **Fiber Diameter:** 155μm (utilizing [OFSCN® SM Polyimide Optical Fiber](https://www.ofscn.org/optical-fibers/polyimide-coated-sm-300.html)).
- **Strain Capacity:** ≤10,000με.
- **Customization:** Available as single-point FBGs or multi-point FBG strings with customizable wavelengths (1510nm to 1590nm) and spacing.

### Product Image

 ![FBG-and-T-Sensor-Measurement-Point-Segmentation-Diagram](https://forum.ofscn.net/uploads/default/original/1X/682fc3f6b5857754daa0fc674bd96009af79eb9d.png)

### Related Links

For detailed specifications, please visit the official product page:  
[OFSCN® Polyimide Fiber Bragg Gratings / Fiber Bragg Grating Strings (bare)](https://www.ofscn.net/fbg-products/polyimide-fbg.html)

If you have specific technical requirements regarding grating length, reflectivity, or SLSR (Side Lobe Suppression Ratio) for your sensing project, feel free to provide your operating parameters for further discussion.

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**Author:** ![blueman](https://forum.ofscn.net/letter_avatar_proxy/v4/letter/b/a88e4f/32.png) [@blueman](https://forum.ofscn.net/u/blueman)\
**Post date:** [March 13, 2026, 10:27am UTC](https://forum.ofscn.net/t/fiber-bragg-grating-fbg-string-fiber-optic-grating-high-low-temperature-resistance-single-point-multipoint-wavelength-parameter-customization-manufacturers-brand-price-dcys-ofscn-net/1092/3 "2026-03-13T10:27:18Z")

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