Page 173 - CITS - Electronic Mechanic - TT - 2024
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ELECTRONICS MECHANIC - CITS


























           Types of Joints in Optical Fiber
           Dr Narinder Kripany is known as the father of fiber optics who is an Indian-born American physicist. The term fiber
           optics was coined by him in the year 1956. He is well known for his pioneer work on FIBER OPTICS. Nowadays
           fiber optic cables are used extensively in network communication and unlike a normal wire joint there are some
           special joints for fiber optics which are classified below
           Types of Joints in Optical Fiber
           Splice : It is a joint which is permanent or semi-permanent and can be used only once. Splice can be of two
           following types:
           1  Mechanical Splice – These are the joints that mechanically hold the two fiber ends and are just an alignment
              device enabling light to pass from one end to the other.
           2   Fusion Splice – It is a process in which two fiber ends are fused together using an electric arc. Generally
              monochromatic light is passed through one fiber end (input) and the other fiber end is adjusted in such a way
              that the output signal is maximum. At this point, high voltage is passed in an electric arc causing fusion of the
              two fiber ends.













           Connector : It is a joint which is temporary and can be used time and again i.e. it is reusable. Some types of
           connector are:
           DNP connector – Dry No Polish connector.
           SMA connector – Surface Mount Adapter Connector.
           Coupler : It is a device that is used for multiplexing and de-multiplexing a signal. When a coupler is used for de-
           multiplexing a signal it is known as a Combiner. There are many types of coupler such as :
           T-Coupler- It splits the incoming signal into two parts.



















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                                    CITS : E & H - Electronics Mechanic - Lesson 94 - 99
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