Single-mode fiber classification code is correct
In order to meet the communication system of the transmission performance requirements, ITU-T G. The IEC and ITU-T and under zero-dispersion wavelength and the resulting displacement of the cut-off wavelength single-mode fiber is divided into six types. Network cables, known as fiber optics, allow data to be transmitted using pulses of light that travel along the fiber. Metal wires are used in optical fibers because they protect against damage and are immune to electromagnetic interference.
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