Femtosecond Fiber Bragg Grating - FBG - Fiber Optic Grating - Ultrafast Laser Point-by-Point Written - Fiber Bragg Grating Array

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

This product is a standard stock Femtosecond FBG, coated with polyimide, and write in doped/pure silica optical fiber. It is a high-temperature/low-temperature resistant Fiber Bragg Grating, it also has the characteristics of large strain quantity. It can be purchased individually or as an accessory for the OFSCN® Series Fiber Bragg Grating Temperature Sensors (FBG Thermometers), Fiber Bragg Grating Strain Sensors (FBG strain gauges), FBG displacement sensors.

The FBG parameters provided are for reference only. After being made into an FBG sensor, the parameters may slightly vary. Customization is available to meet different user requirements.

Video demonstration of the physical appearance of FBG:

Related products:

OFSCN® Capillary Seamless Steel Tube Ultrafast Fiber Bragg Grating Temperature Sensors (from -200°C to 600°C) (Single-point/multi-point)

OFSCN® Capillary Seamless Steel Tube Ultrafast Fiber Bragg Grating Temperature Sensors (from -200°C to 1000°C) (Single-point/multi-point)

Parameters of the Femtosecond Fiber Bragg Grating (FBG):

 

Parameter List	Value
Tail Fiber + Fiber Bragg Grating (FBG) Length	Length is determined by customer specifications
Fiber Bragg Grating (FBG) Operating Temperature Range	Determined by the corresponding Fiber Bragg Grating Temperature Sensor (FBG sensor).
Fiber Type for Fiber Bragg Grating (FBG)	Doped/pure silica fiber core with polyimide coating, resistant to high temperatures.
Coating for Fiber Bragg Grating (FBG)	Polyimide
Fiber Bragg Grating (FBG) Wavelength Deviation	+/-0.3nm
Multi-point Capability	Customizable FBG array
FBG Fiber Bragg Grating Type	Default is a uniform Fiber Bragg Grating.
FBG Fiber Bragg Grating Length	2mm / 3mm / 5mm / 6mm / 8mm  can be customized
FBG Fiber Bragg Grating Central Wavelength	C+L band 1510 ~ 1590nm, other wavelengths can be customized
FBG Fiber Bragg Grating Bandwidth @ 3dB	Typical value ≤0.3nm @ FBG length 8mm
FBG Fiber Bragg Grating SLSR Suppression Ratio	≥15db
FBG Fiber Bragg Grating Reflectivity	Standard options include 25%, 50%, 75%, with customization available.
FBG Fiber Bragg Grating Storage Temperature	0°C to 85°C

OFSCN® Femtosecond laser FBG Fiber Parameters:

Click here to see the parameters for available OFSCN® Femtosecond laser FBG fibers:

G.652D Optical Fiber - Low Water Peak Single-mode Optical Fiber - Sensing and Communication Fiber Optic

G.657 Optical Fiber - Bend-insensitive Single-mode Optical Fiber (Class A) - Sensing and Communication Fiber Optic

200℃ Polyimide Optical Fiber - SM/MM High Temperature Optical Fiber - PI Optical Fiber - Doped/Pure Silica Core Fiber Optic

300℃ SM Polyimide Optical Fiber - High & Low Temperature Optical Fiber - Doped/Pure Silicon Core Optical Fiber

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

Gold-coated Optical Fiber - SM/MM/PM Gold-plated Optical Fiber - Metal Coated Sensing and Communication Fiber Optic

 

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Features of OFSCN® Femtosecond laser FBG:

• Excellent High-Temperature Resi OFSCN® Femtosecond laser FBG stance: 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, significantly reducing the risk of fiber damage and enhancing the product's reliability and mechanical strength.
• Compact Size and Chemical Resistance: The thin polyimide coating results in a smaller fiber diameter. The coating also provides excellent chemical resistance, allowing for stable operation in harsh environments like oil and gas, and chemical industries.
• 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® Femtosecond laser FBG:

Given its outstanding high-temperature resistance, high reliability, and non-invasive production method, this FBG/FBG array is well-suited for various specialized applications.

Application Scenarios Examples of OFSCN® Femtosecond laser FBG:

• Packaged for Use: It can be used as the core sensing element in packaged high-temperature sensors for:
  • Aerospace: Monitoring strain and vibration on engine components and airframes in extreme temperature conditions.
  • Oil and Gas Exploration: Monitoring temperature and pressure in deep wells or high-pressure, high-temperature environments.
  • Industrial Applications: Monitoring temperature and stress in equipment like high-temperature furnaces and boilers.
• Used Directly Without Packaging: In laboratory or research settings, this FBG can be used directly for:
  • High-Temperature Material Testing: Directly measuring parameters like stress, strain, and vibration on high-temperature equipment or materials for scientific research and data collection.
  • Harsh Environment Monitoring: Performing structural health monitoring directly in corrosive or high-temperature environments, such as those found in the chemical or metallurgical industries.