Question
Download Solution PDFWhich of the following is used as a receiver for fibre optic communication?
Answer (Detailed Solution Below)
Detailed Solution
Download Solution PDFThe correct answer is option 3.
Fiber Optic Receivers
- Fiber optic receivers convert light signals into electrical signals for use by equipment such as computer networks.
- These electro-optical devices consist of an optical detector, a low-noise amplifier, and signal conditioning circuitry.
- After the optical detector converts the incoming optical signal into an electrical signal, the amplifier increases it to a level suitable for additional signal processing.
- Two types of semiconductors are used in fiber optic receivers i.e. silicon semiconductor such as photo diode and indium gallium arsenide semiconductors.
- Silicon semiconductors are used in short-wavelength receivers with a range of 400 nm to 1100 nm.
- Indium gallium arsenide semiconductors are used in long-wavelength receivers with a range of 900 nm to 1700 nm.
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