Optical isolators are passive, non reciprocal devices that utilise the phenomenon of Magneto-Optic Rotation to isolate the source from reflections in an optical system. The heart of the optical isolator is based on a Faraday Rotator using, for example, Yttrium Iron Garnet-YIG (LPE and bulk) or Terbium Gallium Garnet-TGG single crystals.

Optical Isolators

   I-633-2 / I-80-2 I-98-2 / I-106-2

• 2mm clear aperture
• Isolation ≥40dB
• Low insertion loss
• Optimised to users wavelength
• Choice of low, medium or high power

The I-x-2 models are supplied with a factory optimised wavelength to your specification for maximum isolation. The choice of centre wavelength can be between 780-850nm, 970-990nm, 1040-1090nm or for HeNe lasers at 632.8nm. For other wavelengths and/or aperture sizes see also the range of dual stage, tuneable and broadband optical isolators on the following pages.

All models are available in low, medium and high power versions for continuous wave and pulsed applications. The high power versions use calcite Glan Taylor polarisers with two AR coated escape ports. Suggested power levels are up to 250MW/cm² pulsed and 250W/cm² CW. For low power applications we offer a special high performance glass polariser.

Pigtail Adaptor
A special polariser housing adaptor plate may be fitted to permit mounting of a standard collimator/adaptor for pigtailing.