Page 1 of 1
The relationship of optical power to current for an LED is given by P = 0.02 x i. The maximum allowed power is 10 mW. Th
Posted: Sun May 15, 2022 6:55 pm
by answerhappygod
- The Relationship Of Optical Power To Current For An Led Is Given By P 0 02 X I The Maximum Allowed Power Is 10 Mw Th 1 (150.21 KiB) Viewed 66 times
The relationship of optical power to current for an LED is given by P = 0.02 x i. The maximum allowed power is 10 mW. The LED has a dc bias current and a 1-MHz ac cur- rent applied. (a) Sketch the power-current curve (that is, the diode's transfer characteristic). (b) If the peak signal power is 2 mW and the peak total power is 10 mW, compute the total peak current, the dc bias current, the average optical power, and the modula- tion index, (which is peak signal power)/(average power). (c) Repeat if the modulation index is now 100% (and so the peak signal power is no longer 2 mW). (d) Let the dc current be 50 mA and the peak ac current be 75 mA. Plot the output power versus time for two cycles of the ac signal.