Frequency ranges used in Microwave and Optical Transmission

[Mohamed.Saeed]

• For Microwave mainly we use 3 main bands

  • Traditional band 7-42 GHz

  • E band 71-86 GHz

  • V band ( used in some specific applications like military and small distance transmission )

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• For optical Transmission we have 3 main optical windows

  • 850 nm, 1310 nm, 1550 nm

• We have 2 types of high capacity transmission technologies

  1. CWDM
  2. DWDM

• CWDM used in medium distance and capacity transmission

• DWDM used in ultra Long distance and ultra high capacity transmission

• DWDM can reach more than 5000 - 10000 km and tens of Tera bits per seconds

• We usually use multiple frequency ranges in optical as described below in table

• Most common band used is C band

• In case of capacity expansion needed we can use L band

• C band and L band has the lowest attenuation coefficient and highest performance

• Each band has its attenuation and dispersion coefficient based on optical fiber type used

• We have 2 main fiber standards used

  1. G652
  2. G655

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