DFB fiber laser

/ Laser diodes

The fiber lasers commercialized by IDIL Fibres Optiques are built around the design of a DFB (Distributed Feed Back) laser.

They use an Erbium or Ytterbium doped fiber on which a FBG (Fiber Bragg Grating) is written. By construction, this laser is naturally single-frequency. Such type of laser is then also tunable, via thermal control over several nm without any mode hopping. It is pumped, thanks a multiplexer, by a laser diode operating @ 980 nm.

The optical output is isolated in order to avoid any light feedback which could pertubate the laser. A PM type is also available.

The driver integrates three main functions :

  • Power and temperature stabilisation of the pump laser diode.
  • Temperature stabilisation of the DFB laser via a Proportional Integral and Derivative electronic for setting the right wavelength.
  • Output power controller for the pump laser diode and DFB itself (drift management). Two output power diagnostics are available.

RS232 version is available only on benchtop laser.

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Output power Up to 10 mW
Available wavelength 1020-1200 nm 1525-1610 nm
Wavelength stability ±1 pm peak to peak
Output power stability Dérive ≤ 5 %
Magnitude stability (20 kHz – 2 GHz) ±1.5 % rms
Spectrum Single-frequency FWHM ≤ 20 kHz
Polarisation Linear
Polarisation ratio > 25 dB
Package OEM – Benchtop
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  • Laser spectroscopy
  • Interferometry
  • Wavelength reference
  • Test and measure equipment for telecom applications Scientific applications
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