FemtoFBGLaser workstation for fiber Bragg gratings writing

FemtoFBG is a laser micromachining workstation optimized for fiber Bragg gratings (FBG) writing.

It is a perfect choice for scientific laboratories, R&D centers, and industrial clients working with telecommunications, distributed sensors, and Bragg Grating based devices development.

Femtosecond FBG writing is a proven technology for universal Bragg Gratings writing in various optical fibers, including not UV-sensitized fibers.

The main advantage of femtosecond laser writing is the ease of process tuning compared to a process using a UV phase mask.

Femtosecond lasers can be applied for Point-by-Point (PbP) and Line-by-Line (LbL) writing for up to 2nd order FBGs writing in various optical fibers, including multicore fibers. The smallest pitch in PbP writing is ~1 µm.​

Main features

  • Direct writing (point-by-point, line-by-line)
  • Wide range Reflection/Transmission parameters control
  • Variety of standard optical fibers

FBG writing workstation benefits

  • Professional
    Every workstation is built for accurate process control using leading hardware solutions
  • Easy-to-use
    The system is designed for a simplified FBG writing process
  • Flexible
    A single system can be used for different FBG writing techniques
  • Full Support
    We will install the workstation at your premises and train your team
  • References
    Our systems are installed in a diverse range of businesses, research universities, and organizations
  • 1 Year Warranty
    And after-warranty service

FemtoFBG configurations

Micromachining technologies Direct laser writing Direct laser writing
The system can include fiber drilling, marking, phase mask writing, and other functionalities
Laser Single-wavelength Dual-wavelength
Design wavelengths/wavelengths can be chosen, including integration of the customer’s provided laser source
FBG writing options Point-by-Point (PbP),
Line-by-Line (LbL)
Point-by-Point (PbP),
Line-by-Line (LbL)
Optional inclusion of alternative writing techniques or techniques
Fibers Single-mode fibers Single-mode fibers Multicore fibers, dual-cladding fibers
Maximum fiber diameter 1 mm Customer’s choice
Customer’s choice
Maximum working range 160x160x60 160x160x60
Up to 300×300
Flat samples processing Included Included
Fiber core autofocus Digital Digital
Polarization control  – Motorized
Motorized Linear Polarization rotation, Circular, Elliptical, Azimuthal, or other
Writing With positioning system With a positioning system and/or scanning unit
Positioning and scanning units can be chosen by the customer
Power control Integrated external control Integrated external control
Option for real-time pulse energy measurement
Vibration control Passive Passive
Fiber feeding Manual Manual
Reel-to-reel mechanism for writing without immersion oil

Customer review

  • “After 10 years of experience, working with your femtosecond system, my honest opinion is more than positive and we are satisfied with the product. Compared to other systems, ours “full optional facility” allows us to explore valuable processing on many different materials. This is an added value for the research in IIT!”
    Luigino Criante
    Technology Researcher
    Istituto Italiano di Tecnologia Genoa, Italy

FemtoFBG advantages vs. other methods

  • Writing through the cladding – no need to strip the fibers before FBG inscription.
  • All fiber types – no need for UV photosensitivity.
  • Easy process tuning for different gratings – the mask is not required.
  • Nearly no system maintenance costs compared to excimer laser-based system.

FemtoFBG customers

FemtoFBG is chosen by the researchers from the world's top universities and R&D centers

  • Open website
    Centre technologique Optique & Lasers ALPhANOV, Bordeaux
    Show the usage
  • Open website
    Institute for Systems and Computer Engineering, Technology and Science, Portugal
    Show the usage
  • Open website
    Shenzhen University, China
    Show the usage
    • 3D direct laser writing – multiphoton polymerization (MPP)
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FemtoFBG brochure

We deliver a full-service solution

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Mokslininku st. 6A, Vilnius, LT-08412, Lithuania

Phone: +370 5 215 7551
E-mail: [email protected]

Company details

Altechna R&D, UAB
Company code 301502628
VAT code LT100006155012
Bank – SEB 70440
LT87 7044 0600 0770 8092