The CLEAVEMETER 2™ is a non-contact interferometer designed for inspecting the end-faces of cleaved or polished optical fibers with cladding diameters of 125 µm to 1200 µm. It gives immediate information on important end-face properties such as flatness, perpendicularity, hackles and dust. Sampling tests as well as continuous process documentation can be carried out both easily and quickly, making this an ideal instrument for cleaver inspection and optimisation.

The optical system is based on a high-end camera with true megapixel resolution and very high sensitivity, yielding excellent image quality at high frame rates and high magnification. Switching between low and high magnification is software-controlled. High-precision optics guarantees sharp and clear images and fringe patterns with very little aberration.

The CLEAVEMETER 2™ comes with user friendly and efficient software available in two different versions – standard and premium. Standard software features include cleave angle measurements with in-picture presentation of results, user-defined markers at points of interest, pseudo-colour mode for better constrast and the ability to log information, save and load images to and from files. The premium package includes support for measurement of plane angles and fiber diameters as well as compensation for adaptor plate angle error for increased accuracy.

Adaptor plates are available for both perpendicular and angled cleave measurements. The mechanical design is compatible with all NYFORS automatic fiber cleavers and accepts the fiber holders used with those machines as well as those of major splicer manufacturers. Customised adaptor plates are available upon request.

The CLEAVEMETER 2™ comes in a small ergonomic, bench-top design and connects to the USB port of a PC running the host application.

Technical Data

Fiber cladding 125-1200µm
Fiber coating 250-1500µm
Camera resolution 1280×1024 pixels
Image scale 1.25 µm per pixel
Image file format 8-bit JPEG, PNG, TIFF, BMP
PC connection USB 2.0 port
Power supply Through USB port
Dimensions 97 mm (W) x 179 mm (D) x 142 mm (H)
Weight 1.6 kg

NYFORS part number: 30100011-12

Included in delivery: CleaveMeter 2™ unit, PC Software, USB interface cable, Manual and Tools.

Cleave Angle Accuracy

Absolute accuracy 0.15/0.03 degrees*
Relative accuracy 20 % of measured cleave angle (125-199 µm)
10 % of measured cleave angle (200-529 µm)
5 % of measured cleave angle (530-1200 µm)

* Measurement accuracy without/with adaptor plate angle error compensation. The latter level of accuracy requires adaptor plate angular errors to be measured/compensated for on the individual CleaveMeter™ the holder is used with. For more information about system accuracy, please contact us at info@nyfors.com.

Selection Guide

Fiber-specific adaptor plates are required in order to properly align different fiber sizes to the center of the CleaveMeter™ optical system field of view. They are not included in delivery and should be ordered separately.

Adaptor plates are available for use with NYFORS automatic fiber cleavers and fiber holders of major splicer manufacturers such as Ericsson, Fujikura/AFL and Furukawa/FITEL. Below you find a selection of the most common types and dimensions. NYFORS generic adaptor plates are compatible with NYFORS LD fiber clamps and Ericsson FSU-clamps.

Please select adaptor plate to match fiber cladding diameter and angle adaptor plate (optional) to match fiber tilt angle.

For more information about available adaptor plates and custom sizes, please contact us at info@nyfors.com.

Adaptor Plate

Cladding diameter (µm) Article Description Article number
Customer specified Adaptor plate, NYFORS, Generic 30100007
115-210 Adaptor plate, FJK, 115-210 µm 30100001
200-529 Adaptor plate, FJK, 200-529 µm 30100002
510-800 Adaptor plate, FJK, 510-800 µm 30100003
800-1200 Adaptor plate, FJK, 800-1200 µm 30100004

Angle Adaptor Plate (optional)

Fiber tilt angle
Customer specified Angle adaptor plate, Generic 30100010
8 degrees Angle adaptor plate, 8 degrees 30100009
15 degrees Angle adaptor plate, 15 degrees 30100008


  • Sharp fringe patterns
  • Flat and angled cleave measurements
  • Operator skill independent for fast operation
  • Documents images from critical end-faces in production and laboratory environments
  • Accepts fibers with cladding diameters from 125 µm to 1200 µm
  • Accepts fiber holders of major splicer manufacturers
  • Adaptor plate angle error measurement and compensation (premium software)
  • Plane angle and three-point fiber diameter measurement (premium software)

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