FBG sensor
Product description
IDIL manufactures single FBG sensors and FBG array sensors for continuous monitoring of temperature, strain, and various physical and chemical parameters. Optimized for industrial and harsh environments, our FBG sensors can be photo-imprinted on fibers with acrylate, polyimide, or metallic coatings. We offer customizable manufacturing parameters (length, bandwidth, reflectivity), and packaging options (flexible or rigid metallic tubes, customer specific packaging, etc.).
- Single FBG: 1 FBG along the fiber at arbitrary position
- FBG array: up to 20 FBGs at arbitrary positions
- Customizable spectral and manufacturing parameters
FEATURES
- Continuous sensing with a single fiber
- Accurate, ultra-thin and lightweight
- High temperature : 120°C / 350°C
- Precise temperature detection (10 pm/µƐ)
- Precise strain detection (1 pm/°C)
- High-frequency vibration analysis
- 100% passive sensor, Immune to EMI/RFI
- Available as single FBG or FBG array
- Compatible with various materials: steel, concrete, composites
- Packaging: None, Acrylate, Metal tubing, Custom
- Long-distance remote monitoring across several kilometers
SPECIFICATION
| FBG SENSOR | |
| Number of FBG sensors | Single FBG, FBG arrays (up to 20 FBGs at arbitrary positions, more on request) |
| FBG profile | Uniform, chirped |
| FBG wavelength | 1 µm to 1.6 µm |
| FBG bandwidth (FWHM) | 0.25 nm to 1 nm (more on request) |
| FBG reflectivity (HR) | >50% typical |
| Active FBG length | 5 to 20 mm (others on request) |
| Fiber type | SM, PM, bend insensitive, polyimide, multi-core (others on request) |
| FBG SLSR | >10dB in center core. The FBGs in all cores have good contrast for monitoring |
| Measurement speed | Interrogator dependant |
| Relative precision | 10 pm/°C and 1 pm/µƐ |
| FBG packaging | None, Acrylate (up to 80°C), High temperature acrylate (up to 150°C), Metal tubing or Custom |
| Fiber pigtail length | 1 m on both sides (others on request) |
| Optical connector | FC/APC (others on request) |
| Jacket | None, loose tube (PVC, Stainless steel, PEEK, PTFE) |
QUESTIONS
A Fiber Bragg Grating (FBG) sensor is an optical device inscribed in a fiber using a UV laser pattern. Acting as a wavelength-selective mirror, it reflects a specific wavelength that shifts in response to strain or temperature changes. FBG sensors provide high-precision measurements thanks to direct wavelength encoding, ensuring robust signal detection over long distances. Multiplexing techniques (WDM, TDM) enable multiple sensors to operate on a single fiber. Unlike traditional sensors, FBG sensors are immune to electromagnetic interference and can be embedded into complex structures (for example composite materials).
FBG sensors are designed for structural health monitoring and demanding industries, excelling in extreme temperatures, corrosive environments, and high-EMI areas. IDIL manufactures FBGs with acrylate and polyimide fibers, as well as specialty fibers (pure silica core, bend-insensitive, radiation-resistant, multi-core).
- Civil infrastructure
- Transportation
- Energy, Oil & Gas
- Security
- Automotive & Aerospace
- Marine vessels
- Telecommunications
- Research & Development
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