The various limitations of classical communication systems have forced the Power Supply Undertakings to look for alternative media for power systems operation and control. A reliable and most efficient communication is essential for the present day complex power network. The Optical Fibre Communication System has been found to be more promising in this respect because of its larger bandwidth and smaller loss. There is almost complete freedom from signal leakage and cross talk. The system is having many advantages in spite of some limitations. The article describes the various components used, their merits and demerits, their application, experience gained by the users etc.
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