___________ is the phenomenon which occurs in the single carrier systems due to small refractive index changes induced by the optical power fluctuations.

___________ is the phenomenon which occurs in the single carrier syste

1.	___________ is the phenomenon which occurs in the single carrier systems due to small refractive index changes induced by the optical power fluctuations.
A.	SBS gain
B.	Self-phase modulation
C.	FSK modulation
D.	Birefringence
Answer» C. FSK modulation

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___________ is the phenomenon which occurs in the single carrier systems due to small refractive index changes induced by the optical power fluctuations.

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