diff options
Diffstat (limited to '3547/CH5/EX5.6/Ex5_6.sce')
| -rw-r--r-- | 3547/CH5/EX5.6/Ex5_6.sce | 34 |
1 files changed, 34 insertions, 0 deletions
diff --git a/3547/CH5/EX5.6/Ex5_6.sce b/3547/CH5/EX5.6/Ex5_6.sce new file mode 100644 index 000000000..cae6bd779 --- /dev/null +++ b/3547/CH5/EX5.6/Ex5_6.sce @@ -0,0 +1,34 @@ +// Example no.5.6
+// To find the peak current if (a) LO power = 10 dBm, (b) LO power = −10 dBm for the single-branch receiver
+// Page no.229
+
+clc;
+clear;
+
+// Given data
+L=100; // Length of fiber
+loss=0.2*L; // Total fiber loss
+PtdBm=12; // The peak power of the signal at the transmitter
+R=0.9; // Responsivity in A/W
+PrdBm=PtdBm-loss; // The power at the receiver
+
+// (a) the peak current LO power = 10 dBm
+PLO1dBm=10; // Power at local oscillator in dBm
+PLO1=10^(0.1*PLO1dBm); // Power at local oscillator in mW
+Pr=10^(0.1*PrdBm); // Power at receiver in mW
+Id1=R*sqrt(Pr*PLO1); // The peak current at LO power = 10dBm
+I1=R*Pr/2+R*sqrt(Pr*PLO1); // The peak current after ignoring the d.c. term
+
+// Display result on command window
+printf('\n The peak current at LO power 10dBm = %0.4f mA',Id1)
+printf('\n The peak current after ignoring the d.c. term = %0.3f mA',I1)
+
+// (b) the peak current LO power = -10 dBm
+PLO2dBm=-10; // Power at local oscillator in dBm
+PLO2=10^(0.1*PLO2dBm); // Power at local oscillator in mW
+Id2=R*sqrt(Pr*PLO2); // The peak current at LO power = -10dBm
+I2=R*Pr/2+R*sqrt(Pr*PLO2); // The peak current after ignoring the d.c. term
+
+// Display result on command window
+printf('\n The peak current at LO power -10dBm = %0.4f mA',Id2)
+printf('\n The peak current after ignoring the d.c. term = %0.4f mA',I2)
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