European Sales Offices

AMS Technologies AG 
Phone: +49 (0)89 895 77-0
E-mail: de_info(at)

AMS Technologies Ltd.  
Phone: +44 (0)1455 556360
E-mail: uk_info(at)

AMS Technologies S.A.R.L. 
Phone: +33 (0)1 64 86 46 00
E-mail: fr_info(at)

AMS Technologies S.r.l. 
Phone: +39 0331 596 693
E-mail: it_info(at)

AMS Technologies S.L. 
Phone: +34 93 380 8420
E-mail: es_info(at)

AMS Technologies Nordic 
Phone: + 46 (0)8 55 44 24 80
E-mail: nordic_info(at)

Index of Refraction

Index of Refraction

The index of refraction (IOR) is a property of any material. For optically transmitting materials, such as for fibers and waveguides, it is reflected in the reduced speed of light when travelling through any media other than vacuum. Fibers and waveguides use a distribution of the IOR within their cross section to guide and reflect light, and knowledge of this distribution allows many other critical performance parameters to be calculated, such as mode fields, group and phase propagation constants and fiber dispersion. Index of refraction measurement stations for fibers are available from AMS Technologies.