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)

Relative Modal Distribution

FMA-100 Fiber Mode Analyzer

Key Features

  • Identify distinct spatial modes
  • Quantify relative mode power
  • Obtain mode amplitude & phase profiles
  • Qualify fibers, components, splices
  • Measure in seconds


The FMA-100 Fiber Mode Analyzer is the first commercial available analyzer to measure and display the modal content in a fiberoptic component or subsystem. Regardless if you have a bare LMA fiber, a splice, a combiner or a complete subassembly of a fiberlaser the FMA-100 will quantify the relative mode power. Moreover by analyzing the time of flight it can even trace at which point in the optical path coupling of energy has been taken place.

The technology is a big step forward compared to traditional M² measurement which does not explain the modal distribution. Despite of a good M² parameter there may be unwanted energy in higher order modes that will affect the final performance of he output beam.


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  • research
  • production
  • telecommunications