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Mechanical splicing of optical fibers - ULTIMODE FAST-MS1

  2. Knowledge base
  3. Library
  4. Optical Fibers
  5. Connectors & Splicing
Mechanical splices ULTIMODE FAST-MS1 are used for permanent connections of optical fibers without the need of employing fusion splicers. Low loss at the level of 0.1 dB is obtained thanks to advanced positioning of the fiber end faces by V-shaped grooves. The optical gel that is also used in the mechanical splice reduces the effects of imprecise cuts and a possible gap between the end faces.
The versatile design is used for splicing optical fibers with buffer coating diameters of 250 um (micrometers or microns) and 900 um, providing high performance connections of multimode and single-mode fibers.
The necessary tools needed for connecting optical fibers with the ULTIMODE FAST-MS1 L5550 mechanical splice:
Three-Hole Fiber Optic Stripper

High Precision Fiber Cleaver ODW-001
Fiber Optic Stripper
L5905
Fiber cleaver ODW-001
L5802


Dust-free Kim-Wipes
L5913
IPA cleaner
L5915
Fiber disposal container
L5918
ULTIMODE FAST-MS1 splice assembly instructions
Fiber Optic Mechanical Splice: ULTIMODE FAST-MS1 [5 pcs.]
View of the ULTIMODE FAST-MS1 L5550 splice components
Description (from left to right): arm, latch, body, 250-holder, lock

Using ULTIMODE FAST-MS1 mechanical splice

to connect fibers with 250 um buffer coating diameter
Fiber Optic Mechanical Splice: ULTIMODE FAST-MS1 [5 pcs.]
1. Preparation of ULTIMODE FAST-MS1 L5550. Locks should be placed on both sides (arms) of the body. For the 250 um fiber, insert the 250-holder into the arm of the body, with the narrower end towards the body, until you feel resistance.
Fiber Optic Mechanical Splice: ULTIMODE FAST-MS1 [5 pcs.]
2. Preparation of the optical fiber. Strip the 250 um buffer to 125 um cladding. The cladding of the fiber should have a length of 11.5 mm.
3. The prepared and cleaned end of the fiber carefully insert into the 250-holder placed in the arm, until you encounter resistance. Move the lock towards the middle to secure the fiber from dropping out.
4. After inserting and locking the fibers on both sides of the mechanical splice, push the latch that positions and secures them in the V-grooves.

Using ULTIMODE FAST-MS1 mechanical splice

to connect fibers with 900 um buffer coating diameter
1. Preparation of ULTIMODE FAST-MS1 L5550. Locks should be placed on both sides (arms) of the body.
Fiber Optic Mechanical Splice: ULTIMODE FAST-MS1 [5 pcs.]
2. Preparation of the optical fiber. Strip the 900 um buffer to 125 um cladding. The cladding of the fiber should have a length of 13 mm.
3. The prepared and cleaned end of the fiber carefully insert into the arm, until you encounter resistance. Move the lock towards the middle to secure the fiber from dropping out.
4. After inserting and locking the fibers on both sides of the mechanical splice, push the latch that positions and secures them in the V-grooves.
Mechanical splice - instructional video
Fiber splicing
Installation of the mechanical splice

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