Create an Account  |   Log In

View All »Matching Part Numbers

Your Shopping Cart is Empty

Fiber-Optic Cleavers

  • Ruby Scribe for Cleaving Excess Fiber
  • Suspension Fiber Cleaver for Consistent 0.5° Cleaves
  • Disposal Unit for Cleaved Fiber



Close-Up View


Disposal Unit

Related Items

Please Wait

Thorlabs offers both the S90R wedge scribe and the XL411 suspension cleaver as solutions for easy, manual cleaving of fibers. The S90R ruby-tipped wedge scribe can be used for easy scribing of excess fiber from ferrules in the connectorization process. The XL411 suspension cleaver is an ideal solution for the high-quality, repeatable cleaves needed for fusion splicing of fiber optics. The FTDU provides a simple safe solution for disposing of all cleaved fiber ends. We recommend using such a disposal unit to protect against injuries caused by fiber shards. In addition, Thorlabs offers a variety of complementary products and tools for fiber termination.

The S90R ruby scribe is a very convenient, easy-to-use tool for scoring or cleaving fiber. It is used extensively when connectorizing or polishing fibers. Below is a simple step-by-step description on the most common usages for this ruby scribe. For more detailed information on connectorization or polishing of fibers, please refer to the FN96A connectorization guide.

Fiber Scoring

Scoring is a technique for cleaving a fiber that utilizes the ruby scribe to make a small cut in the fiber (i.e., a score) that becomes a stress point for cleaving. The picture to the right shows a fiber, protruding from a connector, undergoing scoring by a ruby scribe.

To score a fiber, the cutting edge of the scribe must be held perpendicularly to the protruding fiber. Then very lightly score the fiber in the desired location. It will not take a lot of force to score the fiber, and the fiber should not break during scoring. The scribe will only need to gently touch the fiber in order to properly score it for a clean cleave. If the fiber does break during scoring, it may produce a jagged edge that cannot be polished correctly; hence, care must be taken to prevent breakage during scoring.

Once a fiber has been scored, it can be easily cleaved. From the scored side of the fiber, gently squeeze the fiber tip and pull straight away from the rest of the fiber. Avoid bending or flexing the fiber. This should be all the force necessary to create a clean cleave. Multimode fibers may require slightly more force due to their larger core diameter.

Fiber Cleaving

Cleaving a fiber is a technique that is very similar to scoring. After preparing a fiber for cleaving, clean the bare fiber using a lint-free wipe moistened with isopropyl alcohol. Once clean, tape one end of the fiber to a bench or work station; leave about 6 mm between the edge of the table and tape. The image to the left shows a fiber cable prepped for cleaving. When using this technique, it helps to secure the free end of the fiber to a support in order to help prevent against breaking the fiber on the edge of the table. Even the weight from a short section of fiber can be enough to cause the fiber to break.

To start the cleave, pull the fiber taut and keep tension in the fiber as you cleave. Bring the scribe towards the fiber, keeping it perpendicular, as shown in the image to the bottom left. It's important to keep the proper amount of pressure on the scribe during this process. If too much pressure is applied to the scribe, the fiber will break, resulting in a jagged end, which may not be able to be polished correctly. Too little pressure and the fiber will not score enough to cleave cleanly. After the fiber has been scored, place a drop of water on the cleave site. Then apply pressure to the taped end of the fiber and, like with the scoring above, pull the fiber straight back until you cleave the fiber (see the image to the bottom right). Try to avoid any bending or flexing of the fiber, as this could affect the cleave.

The end of the fiber may be inspected with an eye loupe or microscope. A good cleave will be flat across the fiber and perpendicular to the optic axis. There should be no 'tag' (i.e., protrusion) from the edge of the fiber. The region where the initial scribe was made may be visible. It should be less than 5% of the core diameter. If the cleave is not acceptable, repeat the cleaving process.

XL411 SmartPack Packaging
Click to Enlarge

XL411 Packaging

Smart Pack

Item #% Weight
XL411 25.19% 1.47 kg

Smart Pack

  • Reduce Weight of Packaging Materials
  • Increase Usage of Recyclable Packing Materials
  • Improve Packing Integrity
  • Decrease Shipping Costs

Thorlabs' Smart Pack Initiative is aimed at waste minimization while still maintaining adequate protection for our products. By eliminating any unnecessary packaging, implementing packaging design changes, and utilizing eco-friendly packaging materials for our customers when possible, this initiative seeks to improve the environmental impact of our product packaging. Products listed above are now shipped in re-engineered packaging that minimizes the weight and the use of non-recyclable materials.b As we move through our product line, we will indicate re-engineered packages with our Smart Pack logo.

  • Travel-based emissions reduction calculations are estimated based on the total weight reduction of packaging materials used for all of 2013’s product sales, traveling 1,000 miles on an airplane, to provide general understanding of the impact of packaging material reduction. Calculations were made using the EPA’s shipping emissions values for different modes of transport.
  • Some Smart Pack products may show a negative weight reduction percentage as the substitution of greener packaging materials, such as the Greenwrap, at times slightly increases the weight of the product packaging.

Please Give Us Your Feedback
Email Feedback On
Contact Me:
Your email address will NOT be displayed.
Please type the following key into the field to submit this form:
Click Here if you can not read the security code.
This code is to prevent automated spamming of our site
Thank you for your understanding.
Would this product be useful to you?   Little Use  1234Very Useful

Enter Comments Below:
Characters remaining  8000   
Posted Comments:
Posted Date:2017-02-23 09:58:50.227
Hello, this is In Seok Choi from EOtechnics. We’d like to purchase the Ruby DualScribe Fiber Optics Scribe(1 ea). Please send us the quotation. Thank you Sincerely In Seok Choi ----------------------------------------------- In Seok Choi R&D Center/Senior Engineer EOTECHNICS Co., Ltd. 91 Dongpyeonro Anyang Korea 431-815 Mobile: +82-10-3446-2074
Posted Date:2017-02-24 09:19:11.0
Response from Jeremy at Thorlabs: To request a quote, you can contact us at or choose "Request a Quote" during the checkout process.
Posted Date:2014-09-05 03:19:23.927
Can we replace the blades? If yes, what is the product number for the purchase of the the blade? Reply asap. Regards, Santosh
Posted Date:2014-09-10 03:22:38.0
Response from Bweh: Unfortunately at this time, we don't provide replacement blades for the S90R which has an almost equivalent price with the S90R.
Posted Date:2008-03-24 08:16:07.0
Great tool and i also like to know about more latest tools.

Fiber Scribe

  • 30°, Single Bevel, Ruby Tip
  • 5.2 mm to 5.5 mm Long Contact Area Aids Cleaving of Large-Core Fiber
  • Cleave Bare Fiber to Produce Optical Quality Surfaces
  • Scribe Excess Fiber from the Connector Ferrule in Preparation for Polishing

This Ruby Fiber Scribe has a 30°, single bevel, ruby blade with a 5.2 mm to 5.5 mm long contact area. The blade is reversible, which doubles the life of the scribe (see below for details). However, replacement blades are not available. The soft, non-slip grip provides precise control during scribing. The scribe is approximately 5" long from end to end. Each scribe comes with a clear safety cap to protect the blade from damage when not in use.

Blade Reversal
To reverse the blade, unscrew the knurled end of the scribe and pull it slightly out of the handle. This releases the blade mount. Push the knurled end back into the handle. The blade and its mount will be pushed away from the handle allowing the blade to be removed, flipped, and reinserted. While holding the blade and mount in the handle, screw the knurled end back in, securing the blade.

For information on scoring and cleaving fiber with the Ruby Fiber Scribe, please see our Scribe Guide Tab above.

Based on your currency / country selection, your order will ship from Newton, New Jersey  
+1 Qty Docs Part Number - Universal Price Available / Ships
S90R Support Documentation
S90RRuby DualScribe™ Fiber Optic Scribe

Fiber Cleaver

  • Precision Engineered to Produce Consistent 0.5° Cleaves
  • 3-Step Cleaving Process Clearly Indicated on Unit
  • Switchable Blade Position
  • Mechanical Design Allows for Easy, Precise Blade Replacement
  • For Use with Standard Ø125 µm Cladding and Buffers Ranging from Ø250 to Ø900 µm
  • Ribbon Fiber Option (Requires Adapter Plate Sold by Alcoa Fujikura)

The XL411 Suspension Cleaver has an easy to follow 3-step process that produces consistent 0.5° cleaves. For ease of use, this sequence is clearly indicated on the tool making this an ideal instrument for laboratory or production environments. Unlike rotating cleavers where the blade accesses the fiber from the side, the flat blade of the XL411 cleaves the fiber from the top, which results in the best cleave possible.

The blades on this suspension cleaver last longer than traditional cleavers because the point of contact between the flat, rectangular blade and the fiber can be moved to reduce blade wear, providing up to 5000 cleaves per blade. In addition, the precision mechanical design of the XL411 allows the blade to be replaced quickly and precisely in any location.

Based on your currency / country selection, your order will ship from Newton, New Jersey  
+1 Qty Docs Part Number - Universal Price Available / Ships
XL411 Support Documentation
XL411High Precision Fiber Cleaver, Switchable Blade Position
XL410B Support Documentation
XL410BHigh Precision Fiber Cleaver Replacement Blade

Fiber Optic Disposal Unit

  • Safe Solution for Disposing of Cleaved Fiber Ends
  • One Circular and One Rectangular Covered Hole in Lid
  • Dimensions (L x W x H): 2.75" x 2.75" x 6" (6.99 cm x 6.99 cm x 15.24 cm)
  • Disposable: Do Not Reuse

The FTDU offers a safe solution for disposal of cleaved fiber ends, epoxy and syringes, and other sharp objects. This high-density polyethylene (HDPE) bottle features a translucent lid with one circular and one rectangular hole in it (see the photo to the right). Both of these holes have individual covers that snap closed to keep the contents inside the unit. Tabs on the side of the lid hold the covers open for hands-free use. The two hole covers are connected by a plastic tab. Cut, or pull, the covers apart to use the holes separately.

To use, insert sharps into one of the holes in the lid. Do not remove the lid itself from the unit. Use the "Contents" space on the label to clearly indicate what is inside. To protect against spills, keep the holes covered when not inserting sharps. When it is full, securely cover both holes in the lid by inserting the tab on the cover into the slot in the lid and dispose of the canister according to the contents. Do not fill the sharps container past the indicated "Full" line on the label. Do not reuse this unit; it is a one-time-use container only.

Based on your currency / country selection, your order will ship from Newton, New Jersey  
+1 Qty Docs Part Number - Universal Price Available / Ships
FTDU Support Documentation
FTDUFiber Optic Disposal Unit
Log In  |   My Account  |   Contact Us  |   Careers  |   Privacy Policy  |   Home  |   FAQ  |   Site Index
Regional Websites: West Coast US | Europe | Asia | China | Japan
Copyright 1999-2017 Thorlabs, Inc.
Sales: 1-973-300-3000
Technical Support: 1-973-300-3000

High Quality Thorlabs Logo 1000px:Save this Image