c) Consider an InGaAsP laser diode operating at 2=1310 nm for optical communications. The laser diode has an optical cavity of length 200 microns. The refractive index, n=3.5. The threshold current at 25°C is 30 mA. At i-40mA, the output optical power is 3mW and the voltage across the diode is 1.4V. If the diode current is increased to 45 mA, the optical output power increases to 4mW. Calculate external quantum efficiency (QE), external differential QE, external power efficiency of the laser diode.
c) Consider an InGaAsP laser diode operating at 2=1310 nm for optical communications. The laser diode has an optical cavity of length 200 microns. The refractive index, n=3.5. The threshold current at 25°C is 30 mA. At i-40mA, the output optical power is 3mW and the voltage across the diode is 1.4V. If the diode current is increased to 45 mA, the optical output power increases to 4mW. Calculate external quantum efficiency (QE), external differential QE, external power efficiency of the laser diode.
Chapter59: Motor Startup And Troubleshooting Basics
Section: Chapter Questions
Problem 12SQ: How is a solid-state diode tested? Explain.
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2C) Please help with solving part C only.
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