Fiber Bragg grating (FBG) laboratory

Fiber Bragg gratings (FBG), long-period gratings (LPG) and chemical composition gratings (CCG) are essential technologies for fiber optical communication and sensoring.

Acreo is one of the leading experts in fiber grating technologies. We have developed a system that is highly controllable and flexible, and develop gratings in visible wavelengths, for high temperatures and with complex spectral characteristics.

Contact us to discuss how fiber Bragg gratings can help in your application. Note that we do not produce FBGs for commercial use.

Fiber Bragg gratings

We design and realize e.g. filters at visible wavelengths, long chirped gratings, special sensor arrays, or complex filters.

High temperature gratings

Chemical composition gratings (CCGs) are high temperature stable FBGs, and can therefore be used in demanding sensor applications. The CCGs were invented at Acreo and described in the PhD thesis of M. Fokine, 2002.

Our facility

Technology: Multiple fringe printing technique, allowing complex grating structures for custom-designed spectral characteristics.

UV source: 100 mW frequency doubled argon-ion laser, wavelength 244nm.

Design and synthesis: Custom-developed softwares.

Grating characteristics:

• Wavelengths: 500-3000nm
• Max grating length: 25cm
• Max chirp: 100nm
  
• Apodization, phase profile resolution: 20-100um
  
• Writing time for sensor grating (1cm, 80%): 1 min
  
• Grating operating temperature: < 1000 C