Communications lasers are used with optical fibres, rather that in ope

1.	Communications lasers are used with optical fibres, rather that in open links, to:
A.	Ensure that the beam does not spread
B.	Prevent atmospheric interference
C.	Prevent interference by other lasers
D.	Ensure that people are not blinded by them
Answer» C. Prevent interference by other lasers

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Communications lasers are used with optical fibres, rather that in open links, to:

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