Vue d'ensemble

fiber bragg grating technology

For fiber laser cavity and high power applications

Fiber Bragg Grating mirrors is a critical component used to design laser cavity and are ideal for high power fiber lasers. iXblue’s mirrors have been customized to address the specific requirements of high efficiency and laser applications.
iXblue offers these wavelength selective mirrors on a complete range of specialty fibers for high power handling and standard applications. Optimized manufacturing process and testing ensure their long-term reliability in fiber lasers.
iXblue offers a dissipative package for thermal management of the FBG to ensure stability at high optical power.

pair of fiber bragg grating mirrors


Benefits & Features

  • Low thermal effect
  • Single mode or double clad fiber (in house fiber)
  • Custom specifications available
  • Specific recoating for pump guidance
  • Full passive assembly available
  • Packaging options : bare FBG and heat dissipative package
  • PM available
  • Custom design on request

Advantages of dissipative package

  • Thermal and mechanical shock protection for FBG mirrors and splices
  • Highly reduced wavelength drift


  • High power applications



Wavelength (nm): 400 - 2100

FBG laser mirrors

More infos

FBG laser mirrors

Fiber type: Single & Double Clad
Wavelength (nm): 600 to 2100
Reflectivity HR (%): > 99 or > 99.9
Bandwidth HR (nm): 0.5 to 1.5
Reflectivity LR (%): 3 - 20
Bandwidth LR (nm): 0.1 to 1
Send us your request profile: Custom FBGs

1550 nm

High Power

More infos

1550 nm

High Power

Fiber type: Double Clad
Reflectivity HR (%): > 99
Reflection Bandwidth (FWHM) HR (nm): 0.5
Reflectivity LR (%): 4 - 20
Reflection Bandwidth (FWHM) LR (nm): 0.1


Assessment of a sub-MHz linewidth fiber Bragg grating external-cavity InGaN laser diode

L. Lablonde, C. Le Rouzic, T. Robin (iXblue); A. Congar, S. Trebaol, M. Gay, G. Perin, P. Besnard (Univ. Rennes 1); D. Mammez, JC. Simon (ENSSAT); J. Rouvillain, T. Georges (Oxxius)

Photonic West

MARCH 2021


Narrow linewidth laser diodes (LDs) emitting in the near-UV (NUV) are gaining attention for applications ranging from spectroscopy to atom cooling and interferometry or other applications requiring high spectral purity...

Post-treatment of DBR fibre lasers for enhanced beat-frequency in dual-polarization operation

M. Guionie, M. Brunel, G. Loas (FOTON Institut); E. Pinsard, L. Lablonde, B Cadier iXblue




UV photo-ablation provides an efficient and reproducible means to control the birefringence of a dual-frequency DBR fiber laser. The resulting beat note can be finely tuned by real-time measurement during the process from typically 100 MHz to about 6 GHz, independently of the active medium length.

Narrow Linewidth InGaN Laser Diodes Based on External Cavity Fiber Bragg Grating

M. Gay, A. Congar, D. Mammez, L. Lablonde, R. Butte, N. Grandjean, P. Besnard & S. Trebaol

Research Gate

The first InGaN-based LDs were reported in 1996 by Nakamura and co-workers [1] and commercialized from 1999 by the Nichia Corporation. Since then, huge efforts have been devoted to the optimization of the epitaxial layers (doping, defect concentration, shortening of the radiative lifetime, etc.).

Application Notes

jeu 07/03/2019 - 16:50

Fiber Bragg Gratings Mirrors for High Power Laser Applications up to 3 kW