Which of the following statements about the safe use of optical fiber is wrong?

Question

Options

• AWhen the received optical power is too high, an optical attenuator is required
• BThe light emitted by the laser is infrared light and is not strong, so you can point the connector at the
• CTo clean the optical fiber connector and the optical interface of the laser, special cleaning tools and
• DThe optical subtractor can only be added to the "IN" port, not to the "OUT" port

• A
  10% (3)
• B
  80% (24)
• C
  3% (1)
• D
  7% (2)

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