ITF Technologies manufactures high-quality Fiber Bragg Gratings (FBGs) for both sensing and high-power laser applications, offering customizable optical and mechanical properties.

Overview of Fiber Bragg Gratings

A Fiber Bragg Grating (FBG) is a segment of optical fiber where the refractive index of the core is periodically modulated. This structure acts as a wavelength-specific reflector, reflecting certain wavelengths of light while transmitting others, based on the Bragg condition, which depends on the grating period and the effective refractive index of the fiber core . FBGs can serve as inline optical filters, wavelength-specific reflectors, or sensors for strain, temperature, and other physical parameters .

ITF Technologies' FBG Offerings

High-Power Laser Applications

ITF Technologies produces FBG reflectors designed for high-power fiber lasers. These FBGs feature a low thermal slope and tight wavelength matching, suitable for kilowatt-level laser systems with standard pump power handling up to 3 kW . They can be recoated with robust low-index polymers or packaged in high-power modules. ITF's process allows precise customization of central wavelength, spectral width, and reflectivity, making them ideal for both the High Reflector and Output Coupler in laser cavities .

Sensor Applications

For sensing, ITF Technologies manufactures FBGs with high optical and mechanical performance at low cost. They offer customizable gratings on standard or specialized fibers, including acrylate or polyimide coatings. ITF can provide splice-less FBG arrays over long distances, with control over each grating's optical parameters, suitable for distributed sensing applications .

Customization and Production

ITF Technologies emphasizes flexibility, supporting both low-volume R&D projects and high-volume mass production. Their FBGs can be written on a wide range of fibers, from standard to fully custom, and their “self-matching” FBGs simplify assembly by ensuring compatibility between paired gratings in laser cavities . The company integrates R&D and manufacturing under one roof, enabling rapid prototyping and scalable production .

Applications

• Industrial and medical lasers: High-power FBG reflectors for precise wavelength control .
• Sensing systems: Strain, temperature, and distributed sensing using FBG arrays .
• Telecommunications and photonics: Wavelength-specific filtering and signal management .
• Advanced research: Custom FBGs for experimental setups and specialized optical fibers . ITF Technologies' FBGs combine precision, robustness, and customization, making them suitable for a wide range of photonics and laser applications, from high-power industrial lasers to advanced sensing networks.