Mumbai University > Electronics and telecommunication > Sem 7 > optical communication and networks

Marks: 10

Years: MAY 2016

i. Single-mode operation only occurs above a theoretical cutoff wavelength $λ_c$ given by:

$\lambda_c =\dfrac {2\pi an_1}{V_c}(2\triangle)^{1/2}------- (1)$

ii. Where $V_c$ is the cutoff normalized frequency? Hence $λ_c$ is the wavelength above which a particular fiber becomes single-mode.

iii. The normalized frequency may be expressed in terms of the numerical …