High precision fiber-core to ferrule-envelope concentricity and indexing measurements.

The Ferrule end-face geometry characteristics are key factors to the quality of patch-cords interconnections. While interferometry measurement tools can measure some of these characteristics (Radius of polishing, Apex-offset, Fiber height, …), they cannot measure the concentricity of the fiber core with respect to the ferrule outer envelope. Fiber-core concentricity can have various origins such as fiber cladding to core concentricity , ferrule envelope to bore concentricity and unmatched fiber diameter to ferrule bore diameter.
The result of concentricity is a loss in optical power at interconnections and therefore a loss in performances.

With this module, KONCENTRIK-V2 measures the concentricity of the fiber core with respect to the ferrule outer envelope of a connector with a 0.15µm precision. It also measures the position of the core with respect to the connector key with a few degrees of precision.

KONCENTRIK-V2 is a modular measurement system. Several mechanical modules adapt on it so that either fiber or ferrule concentricity measurements can be performed.



Production of Reference and Master patchcords.
Tuning of connectors so as to reduce the random mating insertion loss of fibre optic assemblies.


Data-Pixel products datasheet
Tuning application note
Study on the repeatability of concentricity and tuning measurements with the Koncentrik system

Key Features

  • Measure Ø2.5mm and 1.25mm PC-type connectors, other diameters available
  • Ferrule end-face visual inspection at x400 magnification
  • Accurate and repeatable measurements
  • User adjustable quality level for high-speed measurements
  • Easy calibration Koncentrik Software
  • Measurement data exported in standard CSV format
  • Statistics on measurements available



Main interface

Main interface

HTML report
HTML report
*Repeatability Range
Eccentricity measurement±0.05µm0 to 100µm
Indexing measurement±5° if eccentricity > 0.2µm0 to 360°
Measurement Speed10 sec+ (user variable)
Magnificationx 400
Ferrule outside Ø1 to 3.17mm
Fiber core Ø5 to 400µm
Power requirements12V external supply
Link to PCUSB2.0, no card required
Temperature10 to 35°C
Humidity5 to 85%, non-condensing
* 1 Sigma values.