3.5 Selection and justification of fiber optic transmission system

Elementary cable section

Shortened

Standard

Wavelength, mkm

1,31

1,55

1,31

1,55

STM-1

Number of digital streams E1

63

Speed of ​​optical compression, Mbit / s

155

Average output power, dBm

-8

2

2

2

Minimum receiver sensitivity, dBm

-34

The width of the spectral line radiation , nm

<0,4

<0,4

<0,25

<0,25

Maximum chromatic dispersion , ps/nm, на ЕКД

55000

STM-4

Number of digital streams E1

252

Speed ​​of optical compression, Mbit / s

622

Average output power, dBm

-11

-0,5

-0,5

4,5

Minimum receiver sensitivity, dBm

-34

-36

-39

-45

The width of the spectral line radiation , nm

<2,5

<1,7

<0,5

<0,5

Maximum chromatic dispersion , ps/nm, на ЕКД

15000

STM-16

Number of digital streams E1

1008

Speed ​​of optical compression, Mbit / s

2500

Average output power, dBm

-3

0

2

2

Minimum receiver sensitivity, dBm

-27

-28

-27

-29.5

The width of the spectral line radiation , nm

<1

<0,6

<1

<0,6

Maximum chromatic dispersion , ps/nm, на ЕКД

10500

STM-64

Number of digital streams E1

4032

Speed ​​of optical compression, Mbit / s

10000

Average output power, dBm

2

2

10

13

Minimum receiver sensitivity, dBm

-18

-18,5

-14

-21

The width of the spectral line radiation , nm

<0,1

Maximum chromatic dispersion , ps/nm, на ЕКД

10500