Splicing

Optical Fibres are layed over long distances.Mostly the optical fibre cables are available in drums of 2 km,4 km etc.So at each 4 km there will be a joint.This jointing method here used is called splicing.There are two types of splicing one is the mechanical splicing and the second one is the fusion splicing.The fig here shows mechanical splicing method.This is a quick method and the fibers won't be permanently joined,only precisely held together,so that light can pass through it very easily.The second method is fusion splicing ,here permanent joint is made between two fibers,Lot of patience and care is needed for this splicing.First we have to prepare the cable for splicing.The steps involved are

1. Remove the outer jacket of the cable using sheath remover to a required length.
2. Remove the inner jacket of the cable using sheath remove(both are similar)
3. Cutoff the strength member up to the required length.
4. Cut off the dummy buffers up to the required length.
5. Clean the jelly filled using Iso Propyl Alchol.
6. Remove the buffer tubes using Buffer tube remover.
7. Clean the jelly filled using Iso Propyl Alchol.
8. Remove the primary Coating using Primary Coating Stripper or Fiber optic stripper.
9. Clen the jelly filled using Iso Propyl Alchol until a knocking sound is heard.
10. Prepare the 2 ndcable also like this
11. Bring them near the Splicing machine.
12. Using the cleaver available in the machine do a perfect vertical cut in the two fibers
13. Place the fibers in the v-groove correctly
14. close the lids
15. Fuse the fibers
16. note the loss