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 device is based on a Faraday Rotator using, for example, Yttrium Iron Garnet-YIG (LPE and bulk) or Terbium Gallium Garnet-TGG single crystals.

Dual Stage Optical Isolators

   I-67-SD-5M / I-80U-2 / I-80U-4
   I-80-SD-5M / I-98-SD-5M

• 2, 4 & 5 mm clear apertures
• High isolation ³60dB
• Low insertion loss
• No need for adjustment

Ultra-high performance is provided in a compact package with no need for user adjustments. Placement in the optical path is simplified by virtue of the fact that the polarisation plane of the emerging, highly polarised beam is parallel to that of the input. All units provide high isolation of ≥60dB (99.9999%) in an optical system.

Broad Bandwidth
The 3 models of the I-x-SD-5M series provide blanket coverage of the 600 to 1000nm wavelength range and are designed for use with any tuneable or single line source where high isolation is required.

I-80U-2 & I-80U-4
The I-80U-x isolators are supplied factory optimised so that maximum isolation occurs at the users specified wavelength. The I-80U-2 is also suitable for fibre pigtailing. The insertion loss of the models I-80U-2 and I-80-U-4 will vary over the 750 to 900nm wavelength range.