List of top Electronics and Communication Engineering Questions on Photodetectors

In a fibre optic system the source and detector respectively are
Consider the following statements in respect to a solar cell (i) a solar cell is a large area p-n junction (ii) in a solar cell the p-n junction is near the surface (iii) a solar cell is a photovoltaic device Which of the statements given above are correct?
The phenomenon of injection electro luminescence is the basis of working of
Let R denote the responsivity of a PIN photodetector and \(\lambda\) is the wavelength. Figure of merit for the photo detector is quantum efficiency. The expression for quantum efficiency \(\mu\) is given by