0
5.1kviews
Draw the diagram of fusion splice and rigid alignment tube splice.
1 Answer
0
162views

FUSION splicing:

It is accomplished by applying localized heating i.e by a flame or an electrical arc at an interference between two butted, pre aligned fiber ends.

The figure shown below:

enter image description here

  • This technique involves heating of two prepared fiber ends to their fusing point by applying sufficient axial pressure between the two optical fibers.
  • For heating most widely source is electric arc.
  • Following are steps for fusion process
  • PREFUSION: It is a technique, which involves the rounding of the fiber ends with a low energy discharge before pressing the fibers together.
  • By moving movable block, with proper pressure two fibers are pressed together
  • Then there will be accomplishment of splice.

MECHANICAL splicing:

  • Using rigid alignment tube.
  • In this method accurately produced rigid alignment tube is used to bond the prepared fiber ends permanently
  • Figure shows the snug tube splicing.

enter image description here

  • In snug tune splicing technique uses a glass or ceramic capillary tube with an inner diameter just large enough to accept the optical fibers.
  • Transparent adhesive is injected through a transverse bore in capillary to give mechanical sealing and index matching of the splice.
  • Average insertion losses as low as 0.1dB have been obtained
  • Figure shows the loose tube splice.
  • In this splice an oversized square section metal is used to accept the prepared fiber ends.
  • Transparent adhesives are first inserted into the tube followed by the fibers.
  • The splice is self-aligned, when fibers are curved in a same plane.
  • Mean splice insertion losses of 0.73dB have been achieved.
Please log in to add an answer.