___________ improves the spectral purity of the device output and nois

1.	___________ improves the spectral purity of the device output and noise current.
A.	Power dissipation
B.	Laser line width reduction
C.	Laser line width injection
D.	Phase noise
Answer» C. Laser line width injection

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___________ improves the spectral purity of the device output and noise current.

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