Question

Structure of avalanche photodiode in optical fiber

Answer 1

Avalanche photodiodes are p-n junction photodiodes purposely made to be operated at high electric fields in order to achieve an internal gain. ... The avalanche photodiode is commonly used in optical communications system. The basic construction of avalanche photodiodes is very similar to that of a pin photodiode

Answer 2

An avalanche photodiode is a highly sensitive semiconductor electronic device that exploits the photoelectric effect to convert light into electricity. From a functional standpoint, they can be regarded as the semiconductor analog of photomultipliers.

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