Network Characterization

The global market competitiveness, demand of quality
services, and exponentially increasing consumer base are
pushing Telecom operators to enhance the transmission
capacity of their networks beyond limits. With the use of
higher bit rates and coarse or dense wavelength division
multiplexing (CWDM/DWDM) techniques, the engineers
are achieving greater bandwidth over longer distances.

 

Why Characterization
  • At higher Bit rates of 10 Gbps upto 40 Gbps, the backbone
  • fiber becomes more sensitive to signal distortions, noise and
  • dispersions.
  • Most of the fiber cables are usually not taken care of
  • higher bit rate sustainability during deployment by network
  • operators.
  • As a result, installation issues such as bend radius, splice
  • losses, pressure points & insertion losses at termination
  • points have become more significant and critical to 10 Gbps
  • networks and beyond.

For example, a laid fiber with a bending radius of 20mmof
its dia, occurring at any one location, and having an
attenuation of 0.3 dB / Km at 1550 nm may suffer a loss of
upto 2 dB / Kmatwavelength 1625 nm.
Therefore, it is becoming essential for a telecom operator
that all of the key parameters of the installed fiber in an
optical network are thoroughly verified in order to ensure
optimum performance. The evaluation of installed fiber
against a specified requirement is known as Fiber
Characterization.

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