Determine the overall power conversion efficiency of lens coupled SLED having forward current of 20 mA and forward voltage of 2 V with 170 ?Wof optical power launched into multimode step index fiber. A)1.256*10^?5 B)4.417*10² C)4.25*10^-3 D)2.14*10^-3

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Quizplus · Accepted Answer

The overall power conversion efficiency ($\eta$) can be calculated using the formula: $\eta = \frac{P_{out}}{P_{in}}$, where $P_{out}$ is the optical power launched into the fiber (170 μW = $170 \times 10^{-6}$ W) and $P_{in}$ is the electrical power input (product of forward current and forward voltage, $20 \text{ mA} \times 2 \text{ V} = 40 \text{ mW} = 40 \times 10^{-3}$ W). Thus, $\eta = \frac{170 \times 10^{-6}}{40 \times 10^{-3}} = 4.25 \times 10^{-3}$.

Determine the Overall Power Conversion Efficiency of Lens Coupled SLED