What is Fiber Cleaver

Fiber Cleaver is an extremely essential equipment used in the optical fiber field for low reflectance and low damage fiber optic splices, particularly when using already polished connectors with internal splices.
But before giving a better and broader definition and clean explanation about this equipment it is important to understand what is cleave and what is the cleaving process, to understand better why is the fiber cleaver important and why we need it.

In the optical fiber field, cleave is an intentional and calculated break, with the intention to produce a completely perfect flat end face and perpendicular to the optical fiber axis or with well defined angle against the optical fiber axis. This sufficiently perpendicular and planar fiber end face can be achieved via the fiber cleaving process.

Cleaving process
The cleaving process is the standard method used to precisely break(cut) an optical fiber for termination or splicing. It begins with making a really small fracture on the side of the optical fiber, with a sharp diamond, or carbide, before or while some defined tension is applied to the optic fiber. This causes the fiber to break, starting at the mentioned fracture point: the fracture quickly propagates over the full optic fiber cross-section. Often, the cleaving leads to a very clean surface of the obtained two fiber parts. The equipment that is mostly in the cleaving process is fiber cleaver.

Fiber Cleaver
Fiber cleaver is a device or equipment that detains the optical fiber cable under low tension, marking the surface in the appropriate place, and then applies a great amount of tension until the optical fiber fragments.

Good fiber cleavers are usually automatic and give persistent outcome, regardless of the operator. When using a good cleaver, you basically just need to clamp the optical fiber inside the cleaver and set off the operation system, and then the fiber glass is automatically cleaved.

But there are also less automatic and mechanical cleavers, when using this type of cleavers, the operator needs to apply force manually to break the optical fiber cable, in which makes it hard to manage the right amount of force needed to break the optical fiber.

By using a good fiber cleaver in the cleaving process, the optical fiber is broken in a smooth way, and in that way the fiber will have a clean surface, perpendicular to the fiber axis, with no protruding glass in the fiber end.

Types of Fiber Cleaver
There are a variety and types of fiber cleavers available in the market, ranging from scribe or manual cleavers to high precision cleavers.

  • Scribe Cleavers
    The manual or scribe cleavers are the original type of fiber optic cleaver, and are reasonably lower in prince if compared with the precision cleaver. This cleavers normally are designed in pen shaped including a diamond tipped wedges, or even designed in a tile squares shaped.
    The manual or scribe cleavers tip are usually made out of carbide or diamond, which makes it sharp and hard enough to be used to scratch the optical fiber manually. After that the operator is able to take the optical fiber to break it. The breaking process is made manually and controlled by the operator, this consequently creates a less precision and accuracy in the cleaving. Because of such inconvenience, this type of cleaver are less favorable among the technicians during there works.
  • High Precision Cleavers
    Precision cleavers are accurately and precisely cleaving equipment. Precision cleaver is usually design with a diamond or tungsten blade, which produces the cut incision on the optical fiber. Then the tension is applied into the optical fiber, and that produces the cleaved end face.One of the advantages of precision cleavers is that it can create repeatable across many of cleaves, by only rotating the blade.
    Despise the fact, being more expensive than the manual cleaver, precision cleaver had the ability to accurately and efficiently cut multiple optical fiber in an short amount of time.

Nowadays, precision cleaver are developed to support several splicing works. Precision cleaver are designed to fusion splice the standard of 125/250um and 125/900um optical fibers, and produce optical fiber to several already polished connectors.

Features of the high precision fiber cleaver:

  • Most high precision cleavers produce a cleave angle deviation typically <0.5° with very high reliability and low scattering under on-side conditions.
  • One-step cleaving operation are a reality now with cleavers. Fiber clamping, bending, scratching and cleaving with one single action.
  • Diamond blade presents the highest cleave quality and can last over 10,000 cleaves. They are even adjustable for cleaving fibers with increased tensile strength, e.g. titanium-coated fibers.
  • It is easy to cleave an 80um diameter fiber, possible to cleave a 125um diameter fiber, and usually difficult to cleave >200um fibers. To some extent, the difficulty in cleaving these fibers results from the fact that the material of the fiber is not crystalline. Again, torsion will produce a non perpendicular end face. In face, most commercially available angle cleavers rely on torsion. The end face angle is proportional to the amount of torsion.

How to choose and select the best Fiber Cleaver for you?

  • Application requirements:

Fiber cleaver produced for fusion splicing, usually need an angle of one degree or less. While cleavers suitable for mechanical connectors usually need angles of less than tree degrees. Therefore, you should know iwhether you need a single-fiber or multi-fiber cleaver before cleaving the fibers all at once.

  • Cleaver design:
    If you plan on purchasing built-in cleavers, that are cleavers built-in the splicer machines, you should do an inspection of the cleaver and the splicer, to check if they need any kind of maintenance. If loses any essential tools, this type of machine can cause inconvenience during the cleaving process.
  • Cleaver features:
    Nowadays, there are numerous types of fiber cleaver available in the market. With the continuous development of fiber cleaver, the cleavers have now improved technology features, and many automatic mechanisms. By purchasing a latest updated features cleaver machine, you may be able to increase your labor productivity, in a less amount of time.

Conclusion: Optical Fiber Cleaver is very important
In the fiber splicing field, fiber cleavers are an indispensably equipment, which allows the precise splicing of optical fibers. It is the quality of the cleaver that assures a good quality in the splicing process. Having a qualified fiber cleaver enhances the cleaving precision and efficiency.Baudcom provide kinds fiber tools include in high precision fiber cleavers and high quality fiber splicer.

Post time: 2022-04-03


Lomoveishiy – Finland

I needed those to connect my PC on the third floor to have internet access in that room, and ISP installed their modem on the first floor only. After dropping fiber patch cables, plugged in all cables into these media converters at both sides, and link came up instantly. Was much easier than I thought!

Raymond – USA

Great experience – units worked straight out of the box – just needed plug in cables and we were done. I also like the possibility to enable jumbo frames, while we do not have a need for this feature at the current moment it’s great to have this option.

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