3SAE Technologies designs and manufactures advanced, high performance fiber cleavers in the world. Our products are specifically designed for the cleaving of fibers ranging from all available sizes and shapes. The average standard cladding size is 125um but fibers of smaller size fibers such as 80um are very common in Military/Aerospace and Oil and Gas applications. A growing segment of the market, high power fiber lasers has a present need to cleave fibers as large as 2 mm in cladding diameter also, the need for compatibility with differently shaped fibers, non-round or Octagonal shaped. 3SAE strives to offer the best options for all of these and other critical applications. 

Large Diameter Fiber Cleavers

Today, there are optical fiber manufacturers creating a large variety of large diameter fibers or LDF. For many, the industry term LDF refers to fibers greater than standard 125um cladding diameter. For example, the types of LDF cladding sizes are 200um, 400um, 600um, 800um, 1000um and up.


3SAE Technologies designs and manufactures the most advanced, high performance large diameter fiber cleavers in the world. Our fiber cleavers were specifically chosen and designed for precision cleaving of large fibers up to 2000 um in diameter. 3SAE and our partners employ innovative and new ideas to solve the challenges found when cleaving round, non-round or uniquely shaped fibers such as Octagonal, Star, D shaped, PM and PCF fibers.

Standard Diameter Fiber Cleavers

In telecom world, the standard cladding diameter is approximately 125um.


A good cleave is required for a successful low loss splice of an optical fiber, often it is the case that fibers spliced by identical methods tend to have different losses, this difference can often be attributed to the quality of their initial cleaves.  The general method of standard fiber cleaving involves a process known as the tension-and-scribe method or the scribe-and-break strategy. The tension-and-scribe process involves the introduction of a small crack into the fiber combined with a tensile force in the vicinity of the crack that causes the fiber to cleave apart.. The scribe-and-break method clamp the fiber in the correct position before a diamond wheel or blade scribes the fiber. Then, a force is applied and the fiber gives a flat clean break at the scribe. Multifiber cleavers are used for ribbon fiber cables.