Wavelength Tunable Isolators/Rotators

Wavelength Tunable Isolators/Rotators

EOT manufactures low and medium power  wavelength tunable Faraday Rotators and Isolators for the 500-1030nm region.

Because the verdet constant in TGG (terbium-gallium- garnet) changes with wavelength, there is a wavelength dependence inherent in Faraday isolators due the change in Faraday rotation. The effects of this can be compensated for by tuning the output polariser of a Faraday isolator to correct for changes in Faraday rotation due to changes in wavelength.

EOT's wavelength tunable Faraday isolators utilise polariser tuning to achieve wavelength tunability.


  • Compact
  • Easy to align
  • 9 models for wavelengths from 500nm to 1030nm
  • Optimisation at wavelength within spectral range
  • Dichroic polariser/polarising beamsplitter options
  • Optional half wave plate



This product could be used for the following applications:

  • Frequency modulation elimination in lasers
  • Eliminating parasitic oscillations
  • Optical Isolators
  • Laser cooling
  • Single frequency laser diodes


This product is manufactured by Electro-Optics Technology Inc.

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