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

MCQOPTIONS

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.	‚âà√¨‚àö√ë/2 Radians
B.	2‚âà√¨‚àö√ë Radians
C.	‚âà√¨‚àö√ë Radians
D.	3‚âà√¨‚àö√ë/2 radians
Answer» B. 2‚âà√¨‚àö√ë Radians

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