# Experiment 3 - Experiment-3 AIM Calculate for step index...

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Experiment -3 AIM: Calculate for step index fibers- a) Propagation constant (β) b) Normalized propagation constant (b) c) V number (V) d) Check whether the fiber is single mode or multi mode. e) Graph between normalized propagation constant (b) and V number f) Cut off wavelength (λc) g) Number of modes traveling in fiber (Ms) Input required Boundary limits for inputs Formula Expected output Units NA n 1 and n 2 1.4 < (n 1 , n 2 ) < 1.5 and n 1 > n 2 (n 1 2 - n 2 2 ) 1/ 2 0.14 to 0.20 unit less θa (n 1 and n 2 ) or NA 1.4 < (n 1 , n 2 ) < 1.5 and n 1 > n 2 Sin -1 [(n 1 2 - n 2 2 ) 1/ 2 ] or Sin -1 (NA) 0 0 to 25 0 degree β (n 1 , n 2 ,λ) or (n 1 ,θa , λ) 1.4 < (n 1 , n 2 ) < 1.5 and n 1 > n 2 and 1.1μm < λ< 1.7μm (2π n 1 / λ)Cos(θa) or (2π n 1 / λ)Cos(Sin -1 [(n 1 2 -n 2 2 ) 1/2 ]) (2πn 2 /λ) < β< (2πn 1 /λ) degree/μm b n 1 and n 2 and β and λ 1.4 < (n 1 , n 2 ) < 1.5 and n 1 > n 2 and

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## This note was uploaded on 03/01/2010 for the course ELECTRONIC 12345 taught by Professor Xyz during the Summer '10 term at Punjab Engineering College.

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Experiment 3 - Experiment-3 AIM Calculate for step index...

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