Fundamentals of Electromagnetics with Engineering Applications
1st Edition
ISBN: 9780470105757
Author: Stuart M. Wentworth
Publisher: Wiley, John & Sons, Incorporated
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Question
Chapter 7, Problem 7.28P
To determine
The minimum value of cladding step index
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Students have asked these similar questions
P 2.7a
What will be the cutoff wavelength for dominant mode in rectangular
waveguide whose length is 10 cm?
(2)
3.9 Explain what is meant by the critical bending radius for an optical fiber. A
multimode graded index fiber has a refractive index at the core axis of 1.46 with a
cladding refractive index of 1.45. The critical radius of curvature which allows large
bending losses to occur is 84 um when the fiber is transmitting light of a particular
wavelength. Determine the wavelength of the transmitted light.
Ans: 0.86 µm
The cutoff wavelength for a step-index fiber is 1400 nm. How many modes can propagate at a signal wavelength of
a) 1550 nm,
b) 1100 nm, and
c) 750 nm?
Consider different polarizations as different modes.
Chapter 7 Solutions
Fundamentals of Electromagnetics with Engineering Applications
Ch. 7 - Find the cutoff frequency for the first eight...Ch. 7 - Prob. 7.2PCh. 7 - Prob. 7.3PCh. 7 - Calculate uG the wavelength in the guide, and the...Ch. 7 - Consider WR975 filled with polyethylene. Find (a)...Ch. 7 - Plot up and wavelength in the guide as a function...Ch. 7 - WR90 waveguide is to be operated at 16 GHz....Ch. 7 - Prob. 7.8PCh. 7 - Prob. 7.9PCh. 7 - Suppose a length of WR137 waveguide operated at...
Ch. 7 - Prob. 7.11PCh. 7 - Prob. 7.12PCh. 7 - Find an expression for the magnetic field of the...Ch. 7 - Prob. 7.14PCh. 7 - Prob. 7.15PCh. 7 - Prob. 7.16PCh. 7 - Compose a program that will plot the left and...Ch. 7 - Prob. 7.18PCh. 7 - Prob. 7.19PCh. 7 - Prob. 7.20PCh. 7 - Prob. 7.21PCh. 7 - Prob. 7.22PCh. 7 - Prob. 7.23PCh. 7 - Prob. 7.24PCh. 7 - Prob. 7.25PCh. 7 - Prob. 7.26PCh. 7 - Suppose nf=1.475 and nc=1.470. Determine the...Ch. 7 - Prob. 7.28PCh. 7 - Prob. 7.29PCh. 7 - Prob. 7.30PCh. 7 - Assume that the coupling efficiency from a typical...Ch. 7 - Prob. 7.32PCh. 7 - Prob. 7.33P
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Similar questions
- What does the TE mean? Why does one have a 10 as subscript and the other mn? What is a broad and short dimension and a rectangular waveguide?arrow_forwardFor multimode step-index fiber with core index of 1.68 and radius of 35 um. The index difference is 3.75%. For a wavelength of 1150 nm, the optical power propagating in cladding is what percentage of total power? (a) 2.1% (b) 2.5% (c) 1.8% (d) 1.4%arrow_forwarda) Define Guide wavelength with the formula? b) A rectangular waveguide working in dominant electric mode has an operating frequency of 10 GHz and the highest cut-off wavelength the waveguide can allow is 4.58 cm. What is the broader dimension of the waveguide.arrow_forward
- Q5 a) A fiber has the following characteristics: n1 = 1.45 (core index) and A=2%. Find the N.A and the acceptance angle.arrow_forwardA single mode fibre is to be dimensioned. The normalised frequency is 80 % of the maximum allowed for single mode condition. The relative refractive index difference is 0.005 and the refractive index of the core is 1.5. The wavelength is 1.5 µm. A. Determine the radius of the core. B. If the number of modes supported by this fiber is 5. Determine the radius of the core.arrow_forwardDetermine the cutoff wavelength for a step index fiber to exhibit single-mode opera- tion when the core refractive index and radius are 1.46 and 4.5 um, respectively.arrow_forward
- Determine the cutoff wavelength for a step-index fiber to exhibit single-mode operation when the core refractive index is 1.46 and the core radius is 4.5 um, with the relative index difference of 0.25 %.arrow_forwardFor dominant mode propagation in TE mode, if the rectangular waveguide has a broader dimension of 31.14 mm , then the cut-off wave number: a) 100 b) 500 c) 50 d) 1000arrow_forwardapoint chanay of 30ncis located at th corigam) while plane yz3 carries fined 1Dat point (6,4,3) chavg to nc /m'arrow_forward
- A 2 V signal is incident to the interface from a 75 Ohm region propagating to a 50 Ohm impedance region. What is the reflection coefficient? What is value of the incident, reflected and transmitted wave? What voltage would you measure on either side of the interface right after the signal goes through the interface.arrow_forwardLecture 8 Examples for Distortion in OF Example: Let A graded index fiber with a parabolic refractive index profile core has a refractive index at the core axis of 1.5 and a relative index difference of 1%. Estimate the maximum possible core diameter which allows single-mode operation at a wavelength of 1.3 µm.arrow_forwardFor multimode step-index fiber with core index of 1.68 and radius of 35 um. The indexdifference is 3.75%. For a wavelength of 1150 nm, the optical power propagating incladding is what percentage of total power?arrow_forward
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