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+// Example 9.5.b;//Incident optical power
+clc;
+clear;
+close;
+E=1.5*10^-19;//energy in joule
+e=1.6*10^-19;//elecronic charge
+If=1.5*10^-6;//forward current in ampere
+C=3*10^8;//SPEED of light in meter per second
+n=0.65;//quantum efficiency
+ht=6.62*10^-34;//plank constt.
+h=((ht*C)/E)*10^6;//Wavelength
+R=(n*e)/(E);//Responsivity in ampere per watt
+Po=(If/R)*10^6;//Output power in micro watt
+disp(Po,"Output power in micro watt")