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Explain the basic principle of operation of photo detector. Explain the work of PIN diode and APD as photo detector, also compare their performance.
written 9.5 years ago by gravatar for teamques10 teamques10 ★ 70k •   modified 5.0 years ago
optical fiber communication
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written 9.5 years ago by gravatar for teamques10 teamques10 ★ 70k

  • The photo-diode is in fact a p-n junction put to the exact opposite use as the LED

  • The variation in current is a function of the incident light

  • Use of the stimulated absorption of light by the semiconductor material for the generation of electron-hole pairs.

  • The energy of the absorbed …

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