Ampliconyx Oy(芬兰)


Lautakatonkatu 18 FIN-33580 Tampere Finland
+358 41 4774781


Ampliconyx was founded in 2016 as spin-off from Optoelectronics Research Centre of Tampere University of Technology – the home of Finland’s photonics industry.

The company commercializes technology of active tapered double clad fibers (T-DCF) invented, patented and implemented by Dr. Valery Filippov and Prof. Yuri Chamorovski as a result of decade of research.

Ampliconyx offers range of T-DCF based gain modules and amplifiers ideally suited for amplification of ultrashort laser pulses, both nanosecond and picosecond, offering its customers unmatched performance from all fiber solution.


The core of Ampliconyx’s technology is patented active tapered double clad fiber (T-DCF, US patent No. 8,433,168B2). T-DCF is an optical fiber with a core doped by rare-earth elements (Yb, Er, Tm etc.) and it is exploits as a gain element in high power amplifiers, both CW and pulsed. Core and cladding diameters of T-DCF are smoothly varying along length. Usually the core parameters (diameter and numerical aperture) are usually are chosen such that fundamental mode only is supported at the narrow part of T-DCF.

In the wide side, a T-DCF has a substantially larger core diameter (typically within range 50 to 200 μm), while the mode content and beam quality (M2) remains the same as it was in the narrow side. Thus, in the active T-DCF, a unique situation realized when only sole fundamental mode propagates in the core where hundreds of modes potentially are able to exsist. Thus, the tapering of the active fiber allows achieve an excitation and propagation of fundamental mode only in a multimode core with a diameter of several tens of microns.The main advantages of active T-DCF are:
  • Large mode field diameter (up to 100um) resulting in significant increasing nonlinear effects (SRS, SPM) threshold in fiber lasers and amplifiers;

  • Large clad pump absorption (typically more than 20dB), which allow make amplifiers (lasers) shorter and thereby additionally (in comparison with a conventional fiber) increase the threshold for nonlinear effects;

  • Immunity to the stimulated Brillouin scattering (SBS) due to modulation of the core diameter.


Ampliconyx offers a range of outperforming all-fiber ultra large mode area gain modules. Gain modules are incorporating company proprietary active tapered double clad fibers (T-DCF) for amplification of ultrashort optical pulses. There are polarization maintaining and random polarization versions gain modules.

Key features

  • Peak power over 1 MW

  • Strictly single mode operation with M2 < 1.3

  • High gain (30 – 50 dB)

  • High pump absorption (20 – 30 dB at 976 nm)

  • Required signal power as low as tens of milliwats

  • Low level of nonlinear effects

  • Millijoule-level extractable energy

  • High threshold of SBS

  • Immunity to mode instability

  • No free space pump required

Available gain modules in random polarization and polarization maintaining (PM) versions 

TGModule A and TGModule A-PM

The module includes T-DCF with spliced pump combiner and angle cleaved end face.

TGModule B and TGModule B-PM

The module includes T-DCF with spliced pump combiner and fiber coupled water cooled multiplexer.

TGModule C and TGModule C-PM

T-DCF based water cooled gain module without pump diodes

TGModule C-PM Light

T-DCF based gain module without pump diodes and with water cooled multiplexer

TGModule D and TGModule D-PM

T-DCF based an all-in-one ready-to-use water cooled gain module including pump diodes

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