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1.	Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â may be used for measurement of the absolute optical attenuation on a fiber link.
A.	silicon photodiodes
B.	ingaasp photodiodes
C.	optical power meters
D.	gyrators
Answer» D. gyrators

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