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The CLEAVEMETER 3D™ 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 and precise information on important end-face properties such as flatness, perpendicularity, hackles and dust. Based on the NYFORS CLEAVEMETER 3D™ design, in addition to producing sharp fringe patterns it also generates three-dimensional images of the cleaved fiber end.

When used in this mode, the surface topography is reconstructed from the fringe pattern and presented graphically as a three-dimensional image of the fiber end. By rotating the image and adjusting the scale and contrast, the surface quality and cleave angle at different points can be analyzed in close detail, allowing for a more comprehensive understanding and accurate interpretation of the data and the cleaving process. While this capability is always important to cleave quality analysis, it can be even especially helpful when analyzing cleaving of fibers with complicated structures such as polarization maintaining fibers, or micro-structured fibers. Information on surface topography can also be saved to a file for further analysis using third party software.

Extremely accurate measurements of both cleave angle and surface flatness over arbitrary diameters can be performed on the reconstructed end-face surface. These measurements are carried out automatically, with full operator independence. This makes the system well suited not only for detailed cleave quality analysis in laboratory environments, but also for close production monitoring where software features such as optional pass/fail indication of cleave angle help ensure that consistent cleave quality is maintained over long periods of continuous cleaver operator.

In addition to cleave angle measurements, the system can also be used to measure a number of other properties such as plane angles, fiber diameters and the distance between points. The software allows the user to view the pointwise slope across the whole fiber end-face, a very useful tool for spotting small scale irregularities and crack propagation behaviour.

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. Custom made adaptor plates are available upon request.

The CLEAVEMETER 3D™ 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/24-bit BMP for surface topography
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: 30100013

Included in delivery: CLEAVEMETER 3D™ unit, PC Software, USB interface cable, Manual and Tools.

Cleave Angle Accuracy

Absolute accuracy 0.01 degrees standard deviation*
Relative accuracy 5 %

* This level of accuracy requires the adaptor plate angle error to be measured/compensated for on each individual CLEAVEMETER 3D™ 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 3D™ 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


  • Full resolution surface topography reconstruction
  • 2D view of surface topography and pointwise slope
  • 3D view of surface topography with camera and lighting control
  • Extremely accurate, operator independent measurements of cleave angle and surface flatness over arbitrary diameters
  • Optional pass/fail indication of cleave angle for fast operation in production environments

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