In the given equation, corrugation period is given by lλb/2Ne. If λ – McqOptions

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1.	In the given equation, corrugation period is given by lλb/2Ne. If λb is the Bragg wavelength, then what does ‘l’ stand for?
A.	Length of cavity
B.	Limitation index
C.	Integer order of grating
D.	Refractive index
Answer» D. Refractive index

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