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Optical fiber:

 

    With growing needs for communication needs, Companies upgrade their infrastructure according to demands. Optical fiber plays a major role in communication.

     Telecom companies use Sonet,Wavelength Division Multiplexing, Dense Wavelength Division Multiplexing. WDM is used in communication in Metros and DWDM is used in International communications using Optic fiber.

     BSNL has 7,73,976 route km of Optical fiber, Reliance communications has 1.78 lakh route km optical fiber.

     Companies are providing Fiber to the Home (FTTH) and Fiber to the Curb for Companies since wireless has low indoor coverage and it is difficult to achieve long distance Internet service using Ethernet.

      This shows the importance of Optic fiber in communications industry.