The InGaAsP/InP double channel planar DFB-BH laser with a quarter wav – McqOptions

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1.	The InGaAsP/InP double channel planar DFB-BH laser with a quarter wavelength shifted first order grating provides a single frequency operation and incorporates a phase shift of ______________
A.	π/2 Radians
B.	2π Radians
C.	π Radians
D.	3π/2 radians
Answer» B. 2π Radians

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