Evolution of fiber optic system

  • Fiber optics deals with the learning of propagation of light through the transparent dielectric wave guide. Fiber optic system currently used extensively as the transmission line between terrestrial hardwired systems.
  • The fiber optics are used for transmission of data from point to point location, so its very accurate result in fiber optic system, Now a day there are many advance technology upgraded in fiber optic system.
  • Optical fiber are very helpful for daily need of fiber optic communication compared to the traditional system because of the long-haul transmission system, as well as low loss transmission medium
  • This article is very helpful for how a new technology upgraded in the year of 1975 to 2015. So now let us talk about the evolution of fiber optic system.
1. First generation :

The first generation of lightwave systems uses HaAs semiconductor laser and operating region was near 0.8 micro meters. Other specifications of this generation are as under :

  • Bitrate  : 45 Mb/s
  • Repeater spacing: 10 km
2. Second generation :
  • Bit rate : 100 Mb/s to 1.7 Gb/s
  • Repeater spacing : 50 km
  • Operating wavelength : 1.3 micro meter
  • Semiconductor : In GaAsP
3. Third generation :
  • Bit rate : 10 Gb/s
  • Repeater spacing : 100 km
  • Operating wavelength :  1.55 micro meter
4. Fourth generation :

The fourth generation uses WDM techniques.

  • Bit rate : 100 Tb/s
  • Repeater spacing : >10000 km
  • Operating wavelength: 1.45 to 2.62 micrometer
5. Fifth generation :

The fifth generation uses raman amplification techniques and optical solitiors.

  • Bitrate : 40-60 Gb/s
  • Repeater spacing: 24000 km – 35000 km
  • Operating wavelength: 1.53 to 1.57 micrometer