Assignment 1

1.2

Spectral Width = 0.8 nm

C-band refers to the wavelength range 1530–1565 nm.

C-band width range equal 35 nm.

So, 35 nm : 0.8 nm =  43 wavelength.

1.4

Phase = 1/6 x 180 = 30 degree

Phase = 0,51 radians

1.6

64 kbps, Tb = 0,15625 mikro second

5 Mbps, Tb = 20 mikro second

10 Gbps, Tb = 10 ns

1.8

Part A

1 pW = -90 dBm

1 nW = -60 dBm

1 mW =  0 dBm

10 mW = 10 dBm

50 mW = 16,98 dBm

Part B

-13 dBm = 50 mikro W

-6 dBm = 0,2 mW

6 dBm =  3,9 mW

17 dBm = 50,11 mW

10.10

3 Amp, 5 dB Gain. Total of Gain = 15 dB

Gain in numeric = 31,62 Times

10.12

B = 2 Mhz S/N=20dB

Shannon limit

Rb = B log (1+S/N)

=2 Mhz (log (21))

=2.64 Mbps

10.14

Sonet Frame = 125 mikro s

Virtual tributary = 1 / 125 mikro s = 8000

a. Bit rate / virtual tributary = 8 bps

b. Channel = 64 kbps / 8 bps = 8000 channel

c. Payload efficiency,

 

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