Erbium doped fiber laser

E5.2.7.7 Erbium doped fiber laser


  • Optical pumping.
  • Fiber coupled diode laser.
  • ASE spectrum.
  • Optical gain.
  • Fiber laser.
  • Spectrum analyzer.
  • Emission spectrum.
  • Computer control.
Principle of operation

An Erbium doped fibre is used as active material. To form a ring laser a WDM is used to couple the pump light into the fibre and to close the ring structure. The ring is opened where thin glass plates couple a small fraction of the clockwise (cw) and counter clockwise (ccw) laser modes. By means of a SiPIN photodetector the radiation of the pump laser of 980 nm is detected and a InGaAs photodiode is used for the laser oscillation of 1.5 μm.

Instruments Techno Test inc.

Instruments Techno Test inc.
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