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Fibre optic power meters have input for attaching fiber optic connector and detector:

This question was previously asked in
RRB ALP Electronics Mechanic 23 Jan 2019 Official Paper (Shift 2)
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  1. gama rays
  2. light rays
  3. X rays
  4. Ultra violet rays

Answer (Detailed Solution Below)

Option 2 : light rays
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Detailed Solution

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The correct answer is option 2.

Fiber optic power meter

  • The fiber optic power meter is a special light meter that measures how much light is coming out of the end of the fiber optic cable. 
  • Fibre optic power meters have input for attaching fiber optic connectors and detectors to capture light rays.
  • Most power meters used in datacom networks are designed to work at 850nm and 1300nm.
  • Power meters measure average optical power, not peak power, so they are sensitive to the duty cycle of the data being transmitted. 
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